Acronyms

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The following is a list of acronyms used in IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM documents.

(Updated 10. July 2016)


Aampere
ampere
A R and MAvailability, Reliability and Maintainability
Availability, Reliability and Maintainability
A of UAngle of Uncertainty :
Angle of Uncertainty :
AAAAAAmerican Association Against Acronym Abuse
American Association Against Acronym Abuse
ABMAddressed Binary Message
Addressed Binary Message
ACAlternating Current
Alternating Current
ACCSEASAccessibility for Shipping, Efficiency Advantages and Sustainability (EU research project)
Accessibility for Shipping, Efficiency Advantages and Sustainability (EUEuropean Union research project)
ACKAcknowledge
Acknowledge
ACTAustralian Capital Territory
Australian Capital Territory
AFSAnti-Fouling System (paint)
Anti-Fouling System (paint)
AGMAbsorbed Glass Matt
Absorbed Glass Matt
AHOAustralian Hydrographic Office
Australian Hydrographic Office
AISAutomatic Identification System
Automatic Identification System
AIS 1AIS Default Channel 1 - 161.975 MHz (Ch. 87B//2087)
AIS Default Channel 1 - 161.975 MHzMegahertz (Ch. 87B//2087)
AIS 2AIS Default Channel 2 - 162.025 MHz (Ch. 88B/2088
AIS Default Channel 2 - 162.025 MHzMegahertz (Ch. 88B/2088
AIS-AtoNAIS-Aid to Navigation transponder
AIS-Aid to Navigation transponder
AIS-SARTAIS Search and Rescue Transmitter
AIS Search and Rescue Transmitter
AISMAssociation Internationale de Signalisation Maritime (Title of IALA in French)
Association Internationale de Signalisation Maritime (Title of IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM in French)
ALLAdmiralty List of Light (UK)
Admiralty List of Light (UKUnited Kingdom)
AMSAAustralian Maritime Safety Authority
Australian Maritime Safety Authority
APIApplication Programming Interface
Application Programming Interface
APLAccredited Prior Learning
Accredited Prior Learning
AREPSAdvanced Refractive Effects Prediction System
Advanced Refractive Effects Prediction System
ARMAids to Navigation Requirements and Management Committee (IALA)
Aids to Navigation Requirements and Management Committee (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
ARPAAutomatic Radar Plotting A
Automatic Radar Plotting Aampere
AS/NZAustralia/New Zealand
Australia/New Zealand
ASCIIAmerican Standard Code for Information Interchange
American Standard Code for Information Interchange
ASFAdditional secondary fact
Additional secondary fact
ASLAbove Sea Level
Above Sea Level
ASMApplication Specific Message
Application Specific Message
ASM1ENAV19-11.4 Figure 1
ENAV19-11.4 Figure 1
ASM2ENAV19-11.4 Figure 1
ENAV19-11.4 Figure 1
ASPApplication Service Provider (LRIT)
Application Service Provider (LRITLong Range Identification and Tracking)
ATBAArea to be avoided
Area to be avoided
ATOAccredited Training Organisation
Accredited Training Organisation
ATPAcceptance Test Plan
Acceptance Test Plan
ATUAutomatic Tuning UnitAntenna Tuning Unit
Antenna Tuning Unit
ATUAutomatic Tuning UnitAntenna Tuning Unit
Automatic Tuning Unit
AVAudio / Visual
Audio / Visual
AVCAviation Communication Service of the CSS
Aviation Communication Service of the CSSCommon Shore-based System (ENAV)
AWGAmerican Wire Gauge
American Wire Gauge
AW־¹Guideline 1067
Guideline 1067
AhAmpere hour
Ampere hour
Ah/dayAmpere hour per day
Ampere hour per day
AppApplication
Application
AppServApplication server
Application server
AtoNAid to Navigation
Aid to Navigation
BCentre of buoyancy
Centre of buoyancy
B0Initial centre of Buoyancy
Initial centre of Buoyancy
B1Heeled centre of Buoyancy
Heeled centre of Buoyancy
BASENAV19-13.6 Figure 16
ENAV19-13.6 Figure 16
BBBulletin Board
Bulletin Board
BBMBroadcast Binary Message
Broadcast Binary Message
BCABuilding Code of Australia
Building Code of Australia
BESBridge Equipment System
Bridge Equipment System
BIMCOBaltic and International Maritime Council (vessel contract agreements)
Baltic and International Maritime Council (vessel contract agreements)
BITEBuilt In Test Equipment
Built In Test Equipment
BNGNew Generation Buoy
New Generation Buoy
BODBiological Oxygen Demand
Biological Oxygen Demand
BRMBridge Resource Management
Bridge Resource Management
BSBritish Standard
British Standard
BSCBase Station Controller
Base Station Controller
BoMmetacentric radiusBureau of Meteorology (Australia)
Bureau of Meteorology (Australia)
BoMmetacentric radiusBureau of Meteorology (Australia)
metacentric radius
CContrastCelsius (previously Centigrade)Capacitance
Capacitance
CContrastCelsius (previously Centigrade)Capacitance
Celsius (previously Centigrade)
CContrastCelsius (previously Centigrade)Capacitance
Contrast
C/10A charge rate in amps of one-tenth the overall battery capacity in amp-hours
A charge rate in amps of one-tenth the overall battery capacity in ampampere-hours
CACompetent Authority
Competent Authority
CADComputer-Aided Design
Computer-Aided Design
CAIMCraft Autonomous Integrity Monitoring
Craft Autonomous Integrity Monitoring
CAPCapability
Capability
CARContractors All Risk (insurance)
Contractors All Risk (insurance)
CARPETComputer Aided Radar Performance Evaluation Tool
Computer Aided Radar Performance Evaluation Tool
CATCustomer Acceptance Test
Customer Acceptance Test
CATZOCCategory of Zone of Confidence
Category of Zone of Confidence
CBCapacity Building
Capacity Building
CBMCondition-Based Maintenance
Condition-Based Maintenance
CCTVClosed-Circuit Television
Closed-Circuit Television
CDCoding DelayChart Datum
Chart Datum
CDCoding DelayChart Datum
Coding Delay
CEConformité Européenne
Conformité Européenne
CGIComputer Graphics Image
Computer Graphics Image
CHChannel
Channel
CHCCanadian Hurricane Centre
Canadian Hurricane Centre
CIECommission Internationale de l'Eclairage (International Commission on Illumination)
Commission Internationale de l'Eclairage (International Commission on Illumination)
CIRMComité International Radio-Maritime
Comité International Radio-Maritime
CMCorrective Maintenance
Corrective Maintenance
CMDSCommon Maritime Data Structure
Common Maritime Data Structure
CMECoronel Mass Ejection (solar flare)
Coronel Mass Ejection (solar flare)
COGCourse over Ground
Course over Ground
COLREGSConvention on the International Regulations for Preventing Collisions at Sea (1972) (as amended)
Convention on the International Regulations for Preventing Collisions at Sea (1972) (as amended)
COMSARSub-Committee on Communications and Search and Rescue (IMO)
Sub-Committee on Communications and Search and Rescue (IMOInternational Maritime Organization)
COPREPCoast of Portugal Ship Reporting System
Coast of Portugal Ship Reporting System
CORENAV19-13.6 Figure 1
ENAV19-13.6 Figure 1
COSPASCosmicheskaya Sistema Poiska Avariynyh Sudov (Russian; Space System for the Search of Vessels in Distress
Cosmicheskaya Sistema Poiska Avariynyh Sudov (Russian; Space System for the Search of Vessels in Distress
COSPAS/SARSATCOSPAS - Search and Rescue Satellite-Aided Tracking
COSPASCosmicheskaya Sistema Poiska Avariynyh Sudov (Russian; Space System for the Search of Vessels in Distress - Search and Rescue Satellite-Aided Tracking
COSSHControl of Substances Hazardous to Health Regulations 1999 (UK)
Control of Substances Hazardous to Health Regulations 1999 (UKUnited Kingdom)
CPAClosest Point of Approach
Closest Point of Approach
CPDContinual Professional Development
Continual Professional Development
CPHCCentral Pacific Hurricane Centre
Central Pacific Hurricane Centre
CPIConsumer Price Index (AUS
Consumer Price Index (AUS
CRICross-Rate InterferenceColour Rendering Index
Colour Rendering Index
CRICross-Rate InterferenceColour Rendering Index
Cross-Rate Interference
CRSCo-ordinate Reference System
Co-ordinate Reference System
CRTCathode-Ray Tube
Cathode-Ray Tube
CSControl StationCoastal Surveillance
Coastal Surveillance
CSControl StationCoastal Surveillance
Control Station
CSPCommunication Service Provider (LRIT)
Communication Service Provider (LRITLong Range Identification and Tracking)
CSSCommon Shore-based System (ENAV)
Common Shore-based System (ENAVe-Navigation Committee (IALA))
CSSACommon Shore-based System Architecture (ENAV)
Common Shore-based System Architecture (ENAVe-Navigation Committee (IALA))
CSSIENAV19-11.4 section 5.6
ENAV19-11.4 section 5.6
CSTDMACarrier Sense-Time Division Multiple Access
Carrier Sense-Time Division Multiple Access
CTIContinuity Time Interval
Continuity Time Interval
CWContinuous Wave
Continuous Wave
CWIContinuous Wave Interfering
Continuous Wave Interfering
CatCategory
Category
CdDrag coefficient
Drag coefficient
ChaykaA radionavigation system, similar to LORAN-C, operated by the Government of the Russian Federation
A radionavigation system, similar to LORAN-CA low-frequency hyperbolic radionavigation system based on measurements of TOA or DTOA of events in pulsed signalsLong Range Navigation System (USA) version C, operated by the Government of the Russian Federation
Circ.Circular (IMO)
Circular (IMOInternational Maritime Organization)
CuNimCumulonimbus (or Cb) cloud
Cumulonimbus (or Cb) cloud
Cxthe battery has been completely discharged over a period of x ho
the battery has been completely discharged over a period of x ho
Ddiameter at the waterline (m)change in the value of a termSolar declination angle (in degrees)Forward amplitude
Forward amplitude
Ddiameter at the waterline (m)change in the value of a termSolar declination angle (in degrees)Forward amplitude
Solar declination angle (in degrees)
Ddiameter at the waterline (m)change in the value of a termSolar declination angle (in degrees)Forward amplitude
change in the value of a term
Ddiameter at the waterline (m)change in the value of a termSolar declination angle (in degrees)Forward amplitude
diameter at the waterline (mmetre)
DGNSSDifferential Global Navigation Satellite SystemDifferential Global Navigation Satellite System
Differential Global Navigation Satellite System
D1 AprSolar declination angle on 1 April
Solar declination angle on 1 April
D31 OctSolar declination angle on 31 October
Solar declination angle on 31 October
DACDesignated Area Code
Designated Area Code
DCDirect Current
Direct Current
DCBDomain Control Body
Domain Control Body
DCTData Collection and Data Transfer Services group of the CSS
Data Collection and Data Transfer Services group of the CSSCommon Shore-based System (ENAV)
DECCAA low-frequency hyperbolic radionavigation system based on phase comparison techniques
A low-frequency hyperbolic radionavigation system based on phase comparison techniques
DECCA NavigatorNavigation equipment for DECCA
Navigation equipment for DECCAA low-frequency hyperbolic radionavigation system based on phase comparison techniques
DFDirection Finder
Direction Finder
DFODepartment of Fisheries and Oceans (Canada)
Department of Fisheries and Oceans (Canada)
DFSDirection Finding Service of the CSS
Direction Finding Service of the CSSCommon Shore-based System (ENAV)
DGNDGNSS Augmentation Service of the CSS
DGNSSDifferential Global Navigation Satellite SystemDifferential Global Navigation Satellite System Augmentation Service of the CSSCommon Shore-based System (ENAV)
DGNSSDifferential Global Navigation Satellite SystemDifferential Global Navigation Satellite System
Differential Global Navigation Satellite System
DGPSDifferential Global Positioning System
Differential Global Positioning System
DINGerman steel gradingDeutsches Institut für Normung, the German Institute for Standardisation
Deutsches Institut für Normung, the German Institute for Standardisation
DINGerman steel gradingDeutsches Institut für Normung, the German Institute for Standardisation
German steel grading
DLPDigital Light Processor
Digital Light Processor
DLoranDifferential Loran
Differential Loran
DMADanish Maritime Authority
Danish Maritime Authority
DMSData Mining Service
Data Mining Service
DNPDistributed Network Protocol
Distributed Network Protocol
DNSDynamic Naming Service
Dynamic Naming Service
DODDepth of Discharge
Depth of Discharge
DOPDilution of Precision
Dilution of Precision
DPTechnical Development Personnel
Technical Development Personnel
DRDead ReckoningDaymark Range
Daymark Range
DRDead ReckoningDaymark Range
Dead Reckoning
DSCGMDSS VHF Digital Selective Calling Service of the CSSDigital Selective Calling
Digital Selective Calling
DSCGMDSS VHF Digital Selective Calling Service of the CSSDigital Selective Calling
GMDSSGlobal Maritime Distress and Safety System VHFVery High Frequency (30 MHz to 300 MHz)VHF Communication Service of the CS Digital Selective Calling Service of the CSSCommon Shore-based System (ENAV)
DSFDecision Support Function
Decision Support Function
DSTDecision Support Tool
Decision Support Tool
DTDDocument Type Definition
Document Type Definition
DTOAThe Difference in Time Of Arrival of events in two signals
The Difference in Time Of Arrival of events in two signals
DVB-SSatellite Digital Video Broadcasting
Satellite Digital Video Broadcasting
DVB-TTerrestrial Digital Video Broadcasting
Terrestrial Digital Video Broadcasting
DVDDigital Video Disc
Digital Video Disc
DWGDictionary Working Group (IALA)
Dictionary Working Group (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
DWTDeadweight tonnage
Deadweight tonnage
DirectXcollection of API (Microsoft)
collection of APIApplication Programming Interface (Microsoft)
DoTDepartment of Transport
Department of Transport
EIlluminanceEnergy
Energy
EIlluminanceEnergy
Illuminance
ECEuropean Commission
European Commission
ECCElectronic Communications Committee
Electronic Communications Committee
ECDENAV19-13.2 section 3.3
ENAV19-13.2 section 3.3
ECDISElectronic Chart Display and Information System
Electronic Chart Display and Information System
ECSElectronic Chart System
Electronic Chart System
EDEmission Delay
Emission Delay
EDAEuropean Defence Agency
European Defence Agency
EDASEGNOS Data Access Service
EGNOSEuropean Geostationary Navigation Overlay Service Data Access Service
EDLDaily load
Daily load
EDL/maxMaximum daily load
Maximum daily load
EDL/nov-marMaximum daily load between November and March
Maximum daily load between November and March
EDLapr-octMaximum daily load between April and October
Maximum daily load between April and October
EEPEngineering, Environment and Preservation Committee (IALA now named ENG)
Engineering, Environment and Preservation Committee (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM now named ENGAids to Navigation Engineering and Sustainability Committee (IALA))
EEZExclusive Economic Zone (Defined in UNCLOS)
Exclusive Economic Zone (Defined in UNCLOSThe United Nations Convention on the Law of the Sea)
EGCEnhanced Group Calling
Enhanced Group Calling
EGNOSEuropean Geostationary Navigation Overlay Service
European Geostationary Navigation Overlay Service
EIEnergy consumed during one flash
Energy consumed during one flash
EIAElectronics Industry Association
Electronics Industry Association
ELTEmergency Location Transmitter
Emergency Location Transmitter
EMCElectromagnetic Compatibility
Electromagnetic Compatibility
EMFElectro-Magnetic Frequency
Electro-Magnetic Frequency
EMIElectromagnetic Interference
Electromagnetic Interference
EMSAEuropean Maritime Safety Agency
European Maritime Safety Agency
ENAVe-Navigation Committee (IALA)
e-Navigation Committee (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
e-NAVe-NavigationENAV
ENAVe-Navigation Committee (IALA)
ENCElectronic Navigation Chart
Electronic Navigation Chart
ENEEnvironmental Data Evaluation Service of the CSS
Environmental Data Evaluation Service of the CSSCommon Shore-based System (ENAV)
ENGAids to Navigation Engineering and Sustainability Committee (IALA)
Aids to Navigation Engineering and Sustainability Committee (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
ENSEnvironmental Sensor Service of the CSS
Environmental Sensor Service of the CSSCommon Shore-based System (ENAV)
EOElectro-Optical
Electro-Optical
EOSElectro-Optical Sensor
Electro-Optical Sensor
EPFSElectronic Position Fixing System
Electronic Position Fixing System
EPIRBEmergency Position Indicating Radio Beacon
Emergency Position Indicating Radio Beacon
EPIRB-AISEmergency Position Indicating Radio Beacon – AIS enabled
Emergency Position Indicating Radio Beacon – AIS enabled
EPSGEuropean Petroleum Survey Group
European Petroleum Survey Group
ERCEuropean Research Council
European Research Council
ERPEffective Radiated Power
Effective Radiated Power
ESAEuropean Space Agency
European Space Agency
ESDElectrostatic discharge
Electrostatic discharge
ETAEstimated Time of Arrival
Estimated Time of Arrival
ETSIEuropean Telecommunications Standards Institute
European Telecommunications Standards Institute
EUEuropean Union
European Union
EWBEmergency Wreck Buoy
Emergency Wreck Buoy
EWFEffective Width of the Fairway
Effective Width of the Fairway
EWMBEmergency Wreck Marking Buoy
Emergency Wreck Marking Buoy
EWMPEmergency Wreck Marking Plan
Emergency Wreck Marking Plan
EnvisatENVIronment SATellite
ENVIronment SATellite
EssEnergy associated with steady state power
Energy associated with steady state power
EsurgeSurge factor
Surge factor
FforceFaradFahrenheit
Fahrenheit
FforceFaradFahrenheit
Farad
FforceFaradFahrenheit
force
FALFacilitation Convention (IMO)
Facilitation Convention (IMOInternational Maritime Organization)
FATFactory Acceptance Test
Factory Acceptance Test
FATDMAFixed-Access Time-Division Multiple Access
Fixed-Access Time-Division Multiple Access
FBbuoyant force
buoyant force
FCAFunctional Configuration Audit
Functional Configuration Audit
FCDFeature Concept Dictionary
Feature Concept Dictionary
FDBKFeedback
Feedback
FECForward error correction
Forward error correction
FERNSFar East Radio Navigation Service
Far East Radio Navigation Service
FFIMFar Field Integrity Monitoring
Far Field Integrity Monitoring
FFMFar Field Monitor
Far Field Monitor
FFTFast Fourier Transform
Fast Fourier Transform
FIFunction IdentifierFor Information
For Information
FIFunction IdentifierFor Information
Function Identifier
FLFlash character < Esurge
Flash character <less than EsurgeSurge factor
FLAFloating Visual Aids Service of the CSS
Floating Visual Aids Service of the CSSCommon Shore-based System (ENAV)
FMFrequency Modulation
Frequency Modulation
FMCWFrequency Modulated Continuous Wave
Frequency Modulated Continuous Wave
FMSFiji Meteorological Service
Fiji Meteorological Service
FOCFull Operational CapabilityFull Operating Condition
Full Operating Condition
FOCFull Operational CapabilityFull Operating Condition
Full Operational Capability
FPSFrames Per Second (Frame rate)
Frames Per Second (Frame rate)
FSKFrequency-shift keying
Frequency-shift keying
FTPFile Transfer Protocol
File Transfer Protocol
FWHMFull Width Half Maximum
Full Width Half Maximum
FWTMFull Width Tenth Maximum
Full Width Tenth Maximum
FXAFixed Visual Aids Service of the CSS
Fixed Visual Aids Service of the CSSCommon Shore-based System (ENAV)
FoVField of View
Field of View
Gcentre of gravity
centre of gravity
GALILEOGlobal Navigation Satellite System (EU)
Global Navigation Satellite System (EUEuropean Union)
GBASGround-Based Augmentation System
Ground-Based Augmentation System
GDOPGeometric Dilution of Position
Geometric Dilution of Position
GEOGeostationary Orbit
Geostationary Orbit
GEOSSGlobal Earth Observation System of Systems
Global Earth Observation System of Systems
GESAMPGroup of Experts on the Scientific Aspects of Marine Environmental Protection
Group of Experts on the Scientific Aspects of Marine Environmental Protection
GFGeneral Feature
General Feature
GFMGeneral Feature Model (IHO)
General Feature Model (IHOInternational Hydrographic Organization)
GHzGigaHertz
GigaHertz
GIGeospatial Information Registry (IHO)
Geospatial Information Registry (IHOInternational Hydrographic Organization)
GI RegistryGeo-Spatial Information Registry (IHO)
Geo-Spatial Information Registry (IHOInternational Hydrographic Organization)
GICOMSGeneral Information Centre on Marine Safety & Security (Korea)
General Information Centre on Marine Safety & Security (Korea)
GISGeographic Information System
Geographic Information System
GITGeorgia Institute of Technology
Georgia Institute of Technology
GLGuideline (IALA)
Guideline (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
GLAGeneral Lighthouse Authority(ies)
General Lighthouse Authority(ies)
GLOGeneric Learning Outcomes
Generic Learning Outcomes
GLONASSGlobal Navigation Satellite System, operated by the Government of the Russian FederationGlobalnaya Navigatsionnaya Sputnikovaya Sistema
Globalnaya Navigatsionnaya Sputnikovaya Sistema
GLONASSGlobal Navigation Satellite System, operated by the Government of the Russian FederationGlobalnaya Navigatsionnaya Sputnikovaya Sistema
Global Navigation Satellite System, operated by the Government of the Russian Federation
GLOSSGlobal Sea Level Observing System
Global Sea Level Observing System
GMmetacentric height
metacentric height
GMDSSGlobal Maritime Distress and Safety System
Global Maritime Distress and Safety System
GMESGlobal Monitoring for Environment and Security
Global Monitoring for Environment and Security
GMLGeography Markup Language
Geography Markup Language
GMSKGaussian Minimum Shift Keying
Gaussian Minimum Shift Keying
GNGrid North
Grid North
GNSSGlobal Navigation Satellite System
Global Navigation Satellite System
GNSS-1Global Navigation Satellite System, based on augmentation of GPS and GLONASS in development by the EU
Global Navigation Satellite System, based on augmentation of GPSGlobal Positioning System. Operated by the Government of the United States and GLONASSGlobal Navigation Satellite System, operated by the Government of the Russian FederationGlobalnaya Navigatsionnaya Sputnikovaya Sistema in development by the EUEuropean Union
GNSS-2Future Global Navigation Satellite System in development by the EU
Future Global Navigation Satellite System in development by the EUEuropean Union
GOOSGlobal Ocean Observing System
Global Ocean Observing System
GPSGlobal Positioning System. Operated by the Government of the United States
Global Positioning System. Operated by the Government of the United States
GRIGroup Repetition Interval
Group Repetition Interval
GRPGlass Reinforced Plastic (fibreglass)
Glass Reinforced Plastic (fibreglass)
GSMGlobal System for Mobile Communications (originally Groupe Spécial Mobile)
Global System for Mobile Communications (originally Groupe Spécial Mobile)
GTGross Tonnage
Gross Tonnage
GWYGateway Service of the CSS
Gateway Service of the CSSCommon Shore-based System (ENAV)
GZRighting arm (hydrodynamic stability)
Righting arm (hydrodynamic stability)
GlossaryA list of definitions of Acronyms
A list of definitions of Acronyms
GyroGyrocompass
Gyrocompass
H&SHealth and Safety
Health and Safety
HALHorizontal Alert Limit
Horizontal Alert Limit
HATHighest Astronomical Tide
Highest Astronomical Tide
HAWTHorizontal Axis Wind Turbine
Horizontal Axis Wind Turbine
HCDHuman Centred Design
Human Centred Design
HDFHierarchical Data Format
Hierarchical Data Format
HDMHarmonised Data Model
Harmonised Data Model
HDOPHorizontal Dilution of Precision
Horizontal Dilution of Precision
HDRHigh Dynamic Range
High Dynamic Range
HDTVHigh Definition Television
High Definition Television
HEAPHuman Element Analysing Process
Human Element Analysing Process
HEOHighly Elliptical Orbit / High Earth Orbit
Highly Elliptical Orbit / High Earth Orbit
HFHigh frequency (3 – 30 MHz)
High frequency (3 – 30 MHzMegahertz)
HFCHF Communication Service of the CSS
HFHigh frequency (3 – 30 MHz) Communication Service of the CSSCommon Shore-based System (ENAV)
HFGHF GMDSS Service of the CSS
HFHigh frequency (3 – 30 MHz) GMDSSGlobal Maritime Distress and Safety System Service of the CSSCommon Shore-based System (ENAV)
HGDMHarmonization Group on Data Modelling (IMO/IHO)
Harmonization Group on Data Modelling (IMOInternational Maritime Organization/IHOInternational Hydrographic Organization)
HLFHeritage Lottery Fund
Heritage Lottery Fund
HMACHash Message Authentication Code
Hash Message Authentication Code
HMIHuman / Machine Interface
Human / Machine Interface
HMPEHigh modulus polyethylene
High modulus polyethylene
HOHydrographic Office
Hydrographic Office
HPHigh Power
High Power
HPLHorizontal Protection Level
Horizontal Protection Level
HRHuman Resources
Human Resources
HSCHigh Speed Craft
High Speed Craft
HSEHealth and Safety Equipment
Health and Safety Equipment
HSSCHydrographic Services and Standards Committee (IHO)
Hydrographic Services and Standards Committee (IHOInternational Hydrographic Organization)
HTTPHypertext Transfer Protocol
Hypertext Transfer Protocol
HWENAV19-13.6 section 10.3.2.2
ENAV19-13.6 section 10.3.2.2
HdarknessHours of possible darkness = 24 - Hdaylight
Hours of possible darkness = 24 - Hdaylightthe number of hours between sunrise and sunset
Hdarkness1AprHours of possible darkness on 1 April
Hours of possible darkness on 1 April
Hdarkness31OctHours of possible darkness on 31 October
Hours of possible darkness on 31 October
Hdaylightthe number of hours between sunrise and sunset
the number of hours between sunrise and sunset
Hydro.Hydrography / hydrographical
Hydrography / hydrographical
Icharge currentIntensity
Intensity
Icharge currentIntensity
charge current
I&TInformation &Technology
Information &Technology
I/OInput / Output
Input / Output
IACSInternational Association of Classification Societies Ltd.
International Association of Classification Societies Ltd.
IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISMAssociation Internationale de Signalisation Maritime (Title of IALA in French)
IALA-AISMInternational Association of Marine Aids to Navigation and Lighthouse Authorities
International Association of Marine Aids to Navigation and Lighthouse Authorities
IALA-NETA global government to government maritime data network (IALA)
A global government to government maritime data network (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
IALAACSIALA approved Classification Society
IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM approved Classification Society
IAMSARInternational Aeronautical and Maritime Search and Rescue (manual)
International Aeronautical and Maritime Search and Rescue (manual)
IAPHInternational Association of Ports and Harbours
International Association of Ports and Harbours
ICAOInternational Civil Aviation Organization
International Civil Aviation Organization
ICNIRPInternational Commission on Non-Ionizing Radiation Protection
International Commission on Non-Ionizing Radiation Protection
ICSIntegrated communications systemInternational Chamber of Shipping
International Chamber of Shipping
ICSIntegrated communications systemInternational Chamber of Shipping
Integrated communications system
ICTInformation and Communications Technology
Information and Communications Technology
IDIdentification
Identification
IDCInternational Data Centre (for LRIT)
International Data Centre (for LRITLong Range Identification and Tracking)
IECInternational Electrotechnical Commission
International Electrotechnical Commission
IEC TCInternational Electrotechnical Commission – Technical Committee
International Electrotechnical Commission – Technical Committee
IEEEInstitute of Electrical and Electronic Engineers
Institute of Electrical and Electronic Engineers
IETFInternet Engineering Task Force
Internet Engineering Task Force
IFSMAInternational Federation of Shipmasters’ Association
International Federation of Shipmasters’ Association
IHMAInternational Harbour Masters’ Association
International Harbour Masters’ Association
IHOInternational Hydrographic Organization
International Hydrographic Organization
III CodeIMO Instruments Implementation Code
IMOInternational Maritime Organization Instruments Implementation Code
ILOInternational Labour Organization
International Labour Organization
IMIntegrity Monitoring (Station)
Integrity Monitoring (Station)
IMDIndian Meteorological Department
Indian Meteorological Department
IMOInternational Maritime Organization
International Maritime Organization
IMPAInternational Maritime Pilots Association
International Maritime Pilots Association
IMSASIMO Member State Audit Scheme
IMOInternational Maritime Organization Member State Audit Scheme
IMSOInternational Mobile Satellite Organization
International Mobile Satellite Organization
IMTInternational Mobile Telecommunications
International Mobile Telecommunications
IMUInertial Measurement Unit
Inertial Measurement Unit
INFOn-Site Infrastructure of the CSS
On-Site Infrastructure of the CSSCommon Shore-based System (ENAV)
INMARSATInternational Maritime Satellite Organization
International Maritime Satellite Organization
INSTraffic Information Service, as part of the Vessel Traffic ServicesIntegrated Navigation System, as defined by IMO Performance StandardsInformation Services (VTS)
Information Services (VTSVessel Traffic Services)
INSTraffic Information Service, as part of the Vessel Traffic ServicesIntegrated Navigation System, as defined by IMO Performance StandardsInformation Services (VTS)
Integrated Navigation System, as defined by IMOInternational Maritime Organization Performance Standards
INSTraffic Information Service, as part of the Vessel Traffic ServicesIntegrated Navigation System, as defined by IMO Performance StandardsInformation Services (VTS)
Traffic Information Service, as part of the Vessel Traffic Services
INTInternational (chart)
International (chart)
IOCIntergovernmental Oceanographic CommissionInitial Operational CapabilityInitial Operating Condition
Initial Operating Condition
IOCIntergovernmental Oceanographic CommissionInitial Operational CapabilityInitial Operating Condition
Initial Operational Capability
IOCIntergovernmental Oceanographic CommissionInitial Operational CapabilityInitial Operating Condition
Intergovernmental Oceanographic Commission
IPInternet ProtocolIngress Protection
Ingress Protection
IPInternet ProtocolIngress Protection
Internet Protocol
IPRIntellectual Property Rights
Intellectual Property Rights
IPSLIntegrated Power System (self-contained marine) lantern
Integrated Power System (self-contained marine) lantern
IRInfraRed
InfraRed
ISBNInternational Standard Book Number
International Standard Book Number
ISOInternational Standardization Organisation
International Standardization Organisation
ISPSInternational Ship and Port Facilities Security [Code]
International Ship and Port Facilities Security [Code]
ISSInternational Space Station
International Space Station
ITInformation Technology
Information Technology
ITDMAIncremental Time Division Multiple Acces
Incremental Time Division Multiple Acces
ITILIT Infrastructure Library (V3 = Version 3, service-oriented)
ITInformation Technology Infrastructure Library (V3 = Version 3, service-oriented)
ITUInternational Telecommunication Union
International Telecommunication Union
ITU-RInternational Telecommunications Union – Radiocommunications Bureau
International Telecommunications Union – Radiocommunications Bureau
ITZInshore Traffic Zone
Inshore Traffic Zone
IVEFInter - VTS Exchange Format
Inter - VTSVessel Traffic Services Exchange Format
IWRAPIALA Waterway Risk Assessment Program
IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM Waterway Risk Assessment Program
IavgAverage current
Average current
Ieeffective intensity
effective intensity
Ieffseffective luminous intensity under service conditions
effective luminous intensity under service conditions
Ifnertia of the water plane
nertia of the water plane
Inominalrequired luminous intensity for the nominal range
required luminous intensity for the nominal range
Iphotomeasured instantaneous intensity
measured instantaneous intensity
Jmoment of inertia of a buoy about the axis through the centre of gravity in kg*m
moment of inertia of a buoy about the axis through the centre of gravity in kgkilogram*mmetre
J/kgJoules per kilogram
Joules per kilogram
JCGJapan Coast Guard
Japan Coast Guard
JHAJob Hazard Analysis
Job Hazard Analysis
JMAJapan Meteorological Agency
Japan Meteorological Agency
JMSJapan Meteorological Service
Japan Meteorological Service
JSAJob Safety Analysis
Job Safety Analysis
JTWCJoint Typhoon Warning Centre
Joint Typhoon Warning Centre
KPIKey Performance Indicator
Key Performance Indicator
Ka-band26.4 – 40 GHz
26.4 – 40 GHzGigaHertz
Kgkilogram
kilogram
kgkilogram
kilogram
Ku-band12.0 – 18.0 GHz
12.0 – 18.0 GHzGigaHertz
LLuminanceLevel (technician training - WWA)Latitude (in degrees)
Latitude (in degrees)
LLuminanceLevel (technician training - WWA)Latitude (in degrees)
Level (technician training - WWAWorld Wide Academy (IALA))
LLuminanceLevel (technician training - WWA)Latitude (in degrees)
Luminance
LAASLocal Area Augmentation System
Local Area Augmentation System
LADGNSSLocal Area Differential GNSS
Local Area Differential GNSSGlobal Navigation Satellite System
LANLocal Area Network
Local Area Network
LANBYLarge Automatic Navigation BuoY
Large Automatic Navigation BuoY
LATLowest Astronomical Tide
Lowest Astronomical Tide
LatLatitudeLatitude
Latitude
LCDLiquid Crystal Display
Liquid Crystal Display
LCoSLiquid Crystal on Silicon
Liquid Crystal on Silicon
LDCLoran Data Channel
Loran Data Channel
LDRLow Dynamic RangeLight Dependent Resistors
Light Dependent Resistors
LDRLow Dynamic RangeLight Dependent Resistors
Low Dynamic Range
LEDLight-Emitting Diode
Light-Emitting Diode
LEOLow Earth Orbit
Low Earth Orbit
LFLow Frequency (30 kHz–300 kHz)
Low Frequency (30 kHzkilohertz–300 kHzkilohertz)
LFPLithium-iron Phosphate (battery)
Lithium-iron Phosphate (battery)
LIMLocal Integrity Monitoring
Local Integrity Monitoring
LNALow noise amplifyer
Low noise amplifyer
LNFELow Noise Front End
Low Noise Front End
LNGLiquid Natural Gas
Liquid Natural Gas
LonLongitude
Longitude
LOPLine of Position
Line of Position
LORANLong Range Navigation System
LongLongitude Range Navigation System
LORAN-CA low-frequency hyperbolic radionavigation system based on measurements of TOA or DTOA of events in pulsed signalsLong Range Navigation System (USA) version C
LongLongitude Range Navigation System (USAUnited States of America) version CContrastCelsius (previously Centigrade)Capacitance
LORAN-CA low-frequency hyperbolic radionavigation system based on measurements of TOA or DTOA of events in pulsed signalsLong Range Navigation System (USA) version C
A low-frequency hyperbolic radionavigation system based on measurements of TOATime of ArrivalTime Of Arrival of an event in a signal or DTOAThe Difference in Time Of Arrival of events in two signals of events in pulsed signals
LORRAPTable 3 of ENAV19-13.2
Table 3 of ENAV19-13.2
LORRIPTable 3 of ENAV19-13.2
Table 3 of ENAV19-13.2
LOSLevel of Service (or LoS)
Level of Service (or LoSLine of Sight)
LPALocal Public Address Service of the CSSLocal Public Address Service of the CSS
Local Public Address Service of the CSSCommon Shore-based System (ENAV)
LPALocal Public Address Service of the CSSLocal Public Address Service of the CSS
Local Public Address Service of the CSSCommon Shore-based System (ENAV)
LPDLaser Phosphor Display
Laser Phosphor Display
LPSLocal Port Services
Local Port Services
LRITLong Range Identification and Tracking
LongLongitude Range Identification and Tracking
LSSLogical Shore Station (AIS
Logical Shore Station (AISAutomatic Identification System
LTELong Term Evolution (Standard)
LongLongitude Term Evolution (Standard)
LVDLow Voltage Directive
Low Voltage Directive
LatLatitudeLatitude
Latitude
Lmlumen
lumen
LoSLine of Sight
Line of Sight
Load-lineInternational Convention on Load Lines (LL)
International Convention on Load Lines (LL)
LongLongitude
Longitude
Lxlux
lux
Mmetacentre
metacentre
M2MMachine-to-Machine
Machine-to-Machine
MACMessage Authentication Code
Message Authentication Code
MARCOMA PIANC technical working group
A PIANCThe World Association for Waterborne Transport Infrastructure technical working group
MARISSMaritime Security Services
Maritime Security Services
MARPOLInternational Convention for the prevention of pollution from ships (IMO 1973) (as amended)
International Convention for the prevention of pollution from ships (IMOInternational Maritime Organization 1973) (as amended)
MARSURMaritime Surveillance
Maritime Surveillance
MASMaritime Assistance Service
Maritime Assistance Service
MBSIALA Maritime Buoyage System
IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM Maritime Buoyage System
MCMaritime Cloud (ENAV)
Maritime Cloud (ENAVe-Navigation Committee (IALA))
MCAMaritime and Coastguard Agency (UK)
Maritime and Coastguard Agency (UKUnited Kingdom)
MDMetadataMaintenance Document
Maintenance Document
MDMetadataMaintenance Document
Metadata
MDEFENAV19-13.6 Figure 16
ENAV19-13.6 Figure 16
MDRMetadata Registries
Metadata Registries
MDSMinimum Detectable Signal
Minimum Detectable Signal
MEDEVACMedical evacuation
Medical evacuation
MEMSMicro Electro Mechanics System
Micro Electro Mechanics System
MEOMedium Earth orbit
Medium Earth orbit
METAREAGeographical sea regions for the purpose of co-ordinating the transmission of meteorological information
Geographical sea regions for the purpose of co-ordinating the transmission of meteorological information
METOCMission Essential Meteorological and Oceanographic CenterMeteorological and Oceanographic
Meteorological and Oceanographic
METOCMission Essential Meteorological and Oceanographic CenterMeteorological and Oceanographic
Mission Essential Meteorological and Oceanographic Center
MFMedium Frequency (300 kHz to 3 MHz)Mean Frequency
Mean Frequency
MFMedium Frequency (300 kHz to 3 MHz)Mean Frequency
Medium Frequency (300 kHzkilohertz to 3 MHzMegahertz)
MFBMedium Frequency Broadcast Service of the CSS
Medium Frequency Broadcast Service of the CSSCommon Shore-based System (ENAV)
MFRMétéo France
Météo France
MHHWMean Higher High Water
Mean Higher High Water
MHWMean High Water
Mean High Water
MHWSMean High Water Springs
Mean High Water Springs
MHzMegahertz
Megahertz
MIDMaritime Identification Digit
Maritime Identification Digit
MILMilitary
Military
MIL-STDMilitary Standard (US)
Military Standard (USUnited States (of America))
MIMMobile Interrogation Monitoring
Mobile Interrogation Monitoring
MIOsMaritime Information Overlays
Maritime Information Overlays
MIRMaritime Identity Registry
Maritime Identity Registry
MKDMinimum Keyboard and Display
Minimum Keyboard and Display
MLEDMicro LED
Micro LEDLight-Emitting Diode
MLLWMean Lower Low Water
Mean Lower Low Water
MLTMMinistry of Land, Transport and Maritime Affairs (Korea)
Ministry of Land, Transport and Maritime Affairs (Korea)
MLWMean Low Water
Mean Low Water
MLWSMean Low Water Springs
Mean Low Water Springs
MMIENAV19-11.4 Table 4 (Man Machine Interface?)
ENAV19-11.4 Table 4 (Man Machine Interface?)
MMSMaritime Messaging Service of the CSS
Maritime Messaging Service of the CSSCommon Shore-based System (ENAV)
MMSIMaritime Mobile Service Identity
Maritime Mobile Service Identity
MNMagnetic North
Magnetic North
MOBMan over board
Man over board
MOB-AISMan Overboard AIS device
Man Overboard AIS device
MOSFETmetal oxide semiconductor field-effect transistor (also MOS FET & MOS-FET)
metal oxide semiconductor field-effect transistor (also MOS FET & MOS-FET)
MPAMarine Protected Area
Marine Protected Area
MPEGMoving Pictures Expert Group
Moving Pictures Expert Group
MPPTMaximum Power Point Tracking (for battery charging)
Maximum Power Point Tracking (for battery charging)
MPRMaritime Portfolio Registry Service of the CSS
Maritime Portfolio Registry Service of the CSSCommon Shore-based System (ENAV)
MPXMaster/Pilot Exchange
Master/Pilot Exchange
MRCCMaritime Rescue Coordination Centre
Maritime Rescue Coordination Centre
MRCPMaritime Radio Communications Plan (IALA)
Maritime Radio Communications Plan (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
MRNMaritime Resource Name (ENAV)
Maritime Resource Name (ENAVe-Navigation Committee (IALA))
MSASMulti-purpose Satellite Augmentation System developed by the Government of Japan
Multi-purpose Satellite Augmentation System developed by the Government of Japan
MSCMaritime Safety Committee (IMO)
Maritime Safety Committee (IMOInternational Maritime Organization)
MSGAIS Message
AIS Message
MSIMaritime Safety Information
Maritime Safety Information
MSISMaritime Safety Information Service
Maritime Safety Information Service
MSKMinimum Shift Keying
Minimum Shift Keying
MSPMaritime Spatial PlanningMaritime Service Portfolio
Maritime Service Portfolio
MSPMaritime Spatial PlanningMaritime Service Portfolio
Maritime Spatial Planning
MSSISMaritime Safety & Security Information System (US)
Maritime Safety & Security Information System (USUnited States (of America))
MSSLMultiple Source Sector Light
Multiple Source Sector Light
MTMessage type (AIS)
Message type (AISAutomatic Identification System)
MTBFMean Time Between Failures
Mean Time Between Failures
MTBOMean Time Between Outages
Mean Time Between Outages
MTIMoving Target Indication
Moving Target Indication
MTSMaritime Transportation System
Maritime Transportation System
MTSRMean Time to Service Restoration
Mean Time to Service Restoration
MTTRMean Time to Repair
Mean Time to Repair
MWBMedium Wave Broadcast Service of the CSS
Medium Wave Broadcast Service of the CSSCommon Shore-based System (ENAV)
MetMeteorology / meteorological
Meteorology / meteorological
MoMorse (code)
Morse (code)
MoUMemorandum of Understanding
Memorandum of Understanding
NNorthNoNewtonJulian date
Julian date
NNorthNoNewtonJulian date
Newton
NNorthNoNewtonJulian date
NoNumber of cells
NNorthNoNewtonJulian date
North
N/ANot applicable
Not applicable
N/mm2Newtons per square millimetre
Newtons per square millimetre
NASNavigation Assistance Service (VTS)
Navigation Assistance Service (VTSVessel Traffic Services)
NASANational Aeronautics and Space Administration (US)
National Aeronautics and Space Administration (USUnited States (of America))
NAVSub-Committee on Safety-of-Navigation (IMO)
Sub-Committee on Safety-of-Navigation (IMOInternational Maritime Organization)
NAVAREAGeographic areas in which various governments are responsible for navigation and weather warnings
Geographic areas in which various governments are responsible for navigation and weather warnings
NAVDATNAVigational DATa (a data transmission service)
NAVigational DATa (a data transmission service)
NAVGUIDEIALA manual covering all aspects of marine Aids to Navigation and is updated every four years
IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM manual covering all aspects of marine Aids to Navigation and is updated every four years
NAVPLANNavigation Plan
Navigation Plan
NAVTEXNavigational Telex (a data transmission MSI service operating on 500 KHz)
Navigational Telex (a data transmission MSIMaritime Safety Information service operating on 500 KHz)
NAVWARNNavigational Warning(s)
Navigational Warning(ssecond)
NCANorwegian Coastal Administration
Norwegian Coastal Administration
NCRNon-Conformance Reports
Non-Conformance Reports
NCSNatural Colour System (Sweden)
Natural Colour System (Sweden)
NCSRNational Centre for Sensor ResearchSub-committee on Navigation Communications and Search and Rescue (IMO)
Sub-committee on Navigation Communications and Search and Rescue (IMOInternational Maritime Organization)
NCSRNational Centre for Sensor ResearchSub-committee on Navigation Communications and Search and Rescue (IMO)
National Centre for Sensor Research
NDTNAVDAT Service of the CSS
NAVDATNAVigational DATa (a data transmission service) Service of the CSSCommon Shore-based System (ENAV)
NELSNorthwest European Loran System
Northwest European Loran System
NHCNational Hurricane Centre
National Hurricane Centre
NIMANational Imagery and Mapping Agency
National Imagery and Mapping Agency
NISNavigational Information Service
Navigational Information Service
NISTNational Institute of Standards and Technology (Japan)
National Institute of Standards and Technology (Japan)
NITZNetwork Identity and Time Zone
Network Identity and Time Zone
NMNautical Mile
Nautical Mile
NMEANational Marine Electronics Association
National Marine Electronics Association
NMRNuclear Magnetic Resonance
Nuclear Magnetic Resonance
NPNautical Publication
Nautical Publication
NSENavigation System Error
Navigation System Error
NSSNamespace Specific String
Namespace Specific String
NT radarNew Technology radar
New Technology radar
NTIANational Telecommunications and Information Administration
National Telecommunications and Information Administration
NTPNetwork Time Protocol
Network Time Protocol
NTXNavtex Service of the CSS
Navtex Service of the CSSCommon Shore-based System (ENAV)
NetCDFNetwork Common Data Form
Network Common Data Form
NiNickel
Nickel
NiCadNickel Cadmium (battery)
Nickel Cadmium (battery)
NiCdNickel Cadmium (battery)
Nickel Cadmium (battery)
NiMHNickel-Metal Hydride (battery)
Nickel-Metal Hydride (battery)
NiMhNickel Metal Hydride (battery)
Nickel Metal Hydride (battery)
NoNumber of cells
Number of cells
NtMNotices to Mariner
Notices to Mariner
NtoMNotice to Mariners
Notice to Mariners
NtripNetworked Transport of RTCM via Internet Protocol
Networked Transport of RTCMRadio Technical Commission for Maritime Services via Internet Protocol
Oaxis of the centre of water plane
axis of the centre of water plane
OAPOld Age Pensioner
Old Age Pensioner
OEMOriginal Equipment Manufacturer
Original Equipment Manufacturer
OEPObject-oriented Engineering Process
Object-oriented Engineering Process
OFTAOffice of the Telecommunications Authority
Office of the Telecommunications Authority
OGCOpen Geospatial Consortium
Open Geospatial Consortium
OH&SOccupational Health & Safety
Occupational Health & Safety
OJOfficial Journal of the European Union
Official Journal of the European Union
OJTOn-the-Job Training
On-the-Job Training
OOWOfficer of the Watch
Officer of the Watch
OPTechnical Operating Personnel of the CSS
Technical Operating Personnel of the CSSCommon Shore-based System (ENAV)
OPRFOcean Policy Research Foundation
Ocean Policy Research Foundation
OPSOperational Presentation SurfaceOperational Performance Statement
Operational Performance Statement
OPSOperational Presentation SurfaceOperational Performance Statement
Operational Presentation Surface
OREIOffshore Renewable Energy Installation
Offshore Renewable Energy Installation
OSOperating System
Operating System
OSCOn-scene commander
On-scene commander
OSHAOccupational and Safety Health Act (USA)
Occupational and Safety Health Act (USAUnited States of America)
OSIOpen Systems Interconnection (model)
Open Systems Interconnection (model)
OpenGLOpen Graphics Library
Open Graphics Library
P&IProtection and Indemnity (clubs or insurance)
Protection and Indemnity (clubs or insurance)
PALPhase Alternation Lines
Phase Alternation Lines
PARParabolic Aluminized Reflector lamp
Parabolic Aluminized Reflector lamp
PAWSAPorts and Waterways Safety Assessment (IALA)
Ports and Waterways Safety Assessment (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
PBMPre-broadcast Monitoring
Pre-broadcast Monitoring
PCPolitically CorrectPhase CodePersonal Computer
Personal Computer
PCPolitically CorrectPhase CodePersonal Computer
Phase Code
PCPolitically CorrectPhase CodePersonal Computer
Politically Correct
PCAPhysical Configuration Audit
Physical Configuration Audit
PCIPhase Code Interval
Phase Code Interval
PCUPSS Control Unit (AIS)
PSSPractical Salinity ScalePhysical Shore Station (AIS) Control Unit (AISAutomatic Identification System)
PDProbability of Detection
Probability of Detection
PDDProject Delivery Department
Project Delivery Department
PDFPortable Document Format
Portable Document Format
PDLPrecision Direction Light
Precision Direction Light
PELPort Entry Light
Port Entry Light
PEMProton Exchange Membrane
Proton Exchange Membrane
PESTPolitical, Economical, Social, Technological (analysis)
Political, Economical, Social, Technological (analysis)
PFAProbability of False Alarm
Probability of False Alarm
PIPresentation InterfacePerformance IndicatorENAV19-13.6 Figure 16
ENAV19-13.6 Figure 16
PIPresentation InterfacePerformance IndicatorENAV19-13.6 Figure 16
Performance Indicator
PIPresentation InterfacePerformance IndicatorENAV19-13.6 Figure 16
Presentation Interface
PIANCThe World Association for Waterborne Transport Infrastructure
The World Association for Waterborne Transport Infrastructure
PIFProduct Information File
Product Information File
PIVPeak inverse voltage
Peak inverse voltage
PKIPublic Key Infrastructure
Public Key Infrastructure
PMProgram Manager (IALA WWA)Planned Maintenance
Planned Maintenance
PMProgram Manager (IALA WWA)Planned Maintenance
Program Manager (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM WWAWorld Wide Academy (IALA))
PNTPosition, Navigation and Timing
Position, Navigation and Timing
POPost Office
Post Office
POBPersons on-board
Persons on-board
PODProbability of detection
Probability of detection
POSPosition Determination Service of the CSSENAV19-13.6 Figure 21
ENAV19-13.6 Figure 21
POSPosition Determination Service of the CSSENAV19-13.6 Figure 21
Position Determination Service of the CSSCommon Shore-based System (ENAV)
PPEPersonal Protective Equipment
Personal Protective Equipment
PPMPulse Position Modulation
Pulse Position Modulation
PPPPrecise Point Positioning
Precise Point Positioning
PPUPortable Pilot Unit
Portable Pilot Unit
PRPseudorange
Pseudorange
PRCpseudo-range correction
pseudo-range correction
PRFPulse Repetition Frequency
Pulse Repetition Frequency
PSProduct Specification
Product Specification
PSCPort State Control
Port State Control
PSLRPeak Side Lobe Ratio
Peak Side Lobe Ratio
PSSPractical Salinity ScalePhysical Shore Station (AIS)
Physical Shore Station (AISAutomatic Identification System)
PSSPractical Salinity ScalePhysical Shore Station (AIS)
Practical Salinity Scale
PSSAParticularly Sensitive Sea Areas
Particularly Sensitive Sea Areas
PTZPan, Tilt, Zoom
Pan, Tilt, Zoom
PUIPersistent Unique Identifier
Persistent Unique Identifier
PVPhotovoltaic
Photovoltaic
PVAPolyvinyl acetate
Polyvinyl acetate
PVTPosition, Velocity and Timing
Position, Velocity and Timing
PWPulse Width
Pulse Width
PWMPulse Width Modulation
Pulse Width Modulation
Pbflpower consumption between flashes
power consumption between flashes
Pflpower consumption during flash
power consumption during flash
Pidledaytime power consumption
daytime power consumption
Psslamp's steady state power requirements (watt)
lamp'ssecond steady state power requirements (watt)
Q&AQuestion and Answer
Question and Answer
QAQuality Assurance
Quality Assurance
QMSQuality Management System
Quality Management System
QSAQuality Safety Audit
Quality Safety Audit
QXGAQuad Extended Graphics Array
Quad Extended Graphics Array
QoSQuality of Service
Quality of Service
RReserve buoyancyReflected amplitudeRange (also ρ)
Range (also ρ)
RReserve buoyancyReflected amplitudeRange (also ρ)
Reflected amplitude
RReserve buoyancyReflected amplitudeRange (also ρ)
Reserve buoyancy
R&RNAVThe Research and Radionavigation Directorate (GLA)
The Research and Radionavigation Directorate (GLAGeneral Lighthouse Authority(ies))
R&TTERadio and Telecommunications Terminal Equipment
Radio and Telecommunications Terminal Equipment
R.O.Reverse Osmosis
Reverse Osmosis
RARisk Assessment
Risk Assessment
RACONRADar beaCON (Radar transponder beacon)
RADar beaCON (Radar transponder beacon)
RADRadar Service of the CSS
Radar Service of the CSSCommon Shore-based System (ENAV)
RADARRadio Detection and Ranging
Radio Detection and Ranging
RAIDRedundant Array of Independent Disks
Redundant Array of Independent Disks
RAIMReceiver Autonomous Integrity Monitoring
Receiver Autonomous Integrity Monitoring
RALRAL colour system (Reichs-Ausschuß für Lieferbedingungen und Gütesicherung)
RALRAL colour system (Reichs-Ausschuß für Lieferbedingungen und Gütesicherung) colour system (Reichs-Ausschuß für Lieferbedingungen und Gütesicherung)
RAOResponse Amplitude Operator
Response Amplitude Operator
RATDMARandom Access Time-Division Multiple Access
Random Access Time-Division Multiple Access
RBSReference Broadcast Synchronization
Reference Broadcast Synchronization
RCCRescue Co-ordination Centre
Rescue Co-ordination Centre
RCDSRaster Chart Display System
Raster Chart Display System
RCSRadar Cross Section
Radar Cross Section
RDFRadio Direction Finder
Radio Direction Finder
RDSRadio Data System
Radio Data System
REACHRegistration, Evaluation, Authorisation and Restriction of Chemical Substances
Registration, Evaluation, Authorisation and Restriction of Chemical Substances
REEFREPGreat Barrier Reef and Torres Strait Ship Reporting System
Great Barrier Reef and Torres Strait Ship Reporting System
REEFVTSGreat Barrier Reef and Torres Strait Vessel Traffic Service
Great Barrier Reef and Torres Strait Vessel Traffic Service
RENCRegional ENC Coordination Centre
Regional ENCElectronic Navigation Chart Coordination Centre
RFRadio Frequency
Radio Frequency
RFCRequest for comments (IETF)
Request for comments (IETFInternet Engineering Task Force)
RHRelative Humidity
Relative Humidity
RIDDORReporting of Injuries, Diseases and Dangerous Occurrences Regulations 1995 (UK)
Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 1995 (UKUnited Kingdom)
RIMSENAV19-13.6 section A.2.2 (or should this be RIMS?- See also Figure 29)
ENAV19-13.6 section Aampere.2.2 (or should this be RIMSENAV19-13.6 section A.2.2 (or should this be RIMS?- See also Figure 29)?- See also Figure 29)
RMrighting moment
righting moment
RMPRecognized Maritime Picture
Recognized Maritime Picture
RMSRoot Mean Squared
Root Mean Squared
RNAVRadio & Radionavigation Committee (IALA)(old)
Radio & Radionavigation Committee (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)(old)
RNCRaster navigation chart
Raster navigation chart
ROTRate of Turn
Rate of Turn
RPMRevolutions per minute
Revolutions per minute
RRRadio Regulations (ITU-R)
Radio Regulations (ITU-RInternational Telecommunications Union – Radiocommunications Bureau)
RRCRange Rate Correction
Range Rate Correction
RSReference Station
Reference Station
RSIMReference Station Integrity Monitor
Reference Station Integrity Monitor
RTCARadio Technical Commission for Aeronautics
Radio Technical Commission for Aeronautics
RTCMRadio Technical Commission for Maritime Services
Radio Technical Commission for Maritime Services
RTERadar Target Enhancer
Radar Target Enhancer
RTFRich Text Format
Rich Text Format
RTKReal Time Kinematic
Real Time Kinematic
RTURemote Telemetry Unit
Remote Telemetry Unit
RecRecommendation (IALA)
Recommendation (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
Rggeographical range
geographical range
RoHSReduction of Hazardous Substances
Reduction of Hazardous Substances
RoSPARoyal Society for the Prevention of Accidents (UK)
Royal Society for the Prevention of Accidents (UKUnited Kingdom)
RxReception / Receiver
Reception / Receiver
SSouth
South
S-100Geospatial Information Registry (IHO)
Geospatial Information Registry (IHOInternational Hydrographic Organization)
S-101IHO ENC Product Specification (under development in 2015)
IHOInternational Hydrographic Organization ENCElectronic Navigation Chart Product Specification (under development in 2015)
S-200IALA domain for S-100 Product Specifications
IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM domain for S-100Geospatial Information Registry (IHO) Product Specifications
S-44Standards for Hydrographic Surveys (IHO)
Standards for Hydrographic Surveys (IHOInternational Hydrographic Organization)
S-52Standard and the portrayal of colours and symbols in ECDIS (IHO)
Standard and the portrayal of colours and symbols in ECDISElectronic Chart Display and Information System (IHOInternational Hydrographic Organization)
S-57IHO Transfer Standard for Digital Hydrographic Data
IHOInternational Hydrographic Organization Transfer Standard for Digital Hydrographic Data
S-63IHO Data Protection Scheme
IHOInternational Hydrographic Organization Data Protection Scheme
S-99Operational Procedures for the Organization and Management of the S-100 Geospatial Information Registry
Operational Procedures for the Organization and Management of the S-100Geospatial Information Registry (IHO) Geospatial Information Registry
S-GSecretary-General
Secretary-General
S-IALA-NETSatellite IALA-NET
Satellite IALA-NETA global government to government maritime data network (IALA)
S-Modea standard mode of presentation and operation for navigation displays, triggered by a single button
a standard mode of presentation and operation for navigation displays, triggered by a single button
S-band2.0 – 4.0 GHz (Note : military designation is F-band)
2.0 – 4.0 GHzGigaHertz (Note : military designation is FforceFaradFahrenheit-band)
S/NSignal to Noise ratioSafety of Navigation
Safety of Navigation
S/NSignal to Noise ratioSafety of Navigation
Signal to Noise ratio
SASelective AvailabilitySelected Availability (GNSS)
Selected Availability (GNSSGlobal Navigation Satellite System)
SASelective AvailabilitySelected Availability (GNSS)
Selective Availability
SAISSatellite AIS
Satellite AIS
SAMService Area Monitor
Service Area Monitor
SARSearch and Rescue
Search and Rescue
SAR (1979)International Convention on Maritime SAR (1979)
International Convention on Maritime SAR (1979)International Convention on Maritime SAR (1979)
SARCSAR Mission Co-ordinator
SAR Mission Co-ordinator
SARSATSatellite-based Synthetic Aperture Radar
Satellite-based Synthetic Aperture Radar
SARTSearch and Rescue Transponder
Search and Rescue Transponder
SASSupport of Allied Services (VTS)
Support of Allied Services (VTSVessel Traffic Services)
SATSite Acceptance TestSatellite
Satellite
SATSite Acceptance TestSatellite
Site Acceptance Test
SBASSpace-Based Augmentation SystemSatellite-Based Augmentation System
Satellite-Based Augmentation System
SBASSpace-Based Augmentation SystemSatellite-Based Augmentation System
Space-Based Augmentation System
SBNShore-Based Wide Area Network Service of the CSS
Shore-Based Wide Area Network Service of the CSSCommon Shore-based System (ENAV)
SCSwinging CircleSpecial Committee (RTCM)
Special Committee (RTCMRadio Technical Commission for Maritime Services)
SCSwinging CircleSpecial Committee (RTCM)
Swinging Circle
SCADASupervisory Control and Data Acquisition (system)
Supervisory Control and Data Acquisition (system)
SCTSService Center Time Stamp
Service Center Time Stamp
SDSoftware defined
Software defined
SDAShip Data Consistency Analysis Service of the CSS
Ship Data Consistency Analysis Service of the CSSCommon Shore-based System (ENAV)
SDHSynchronous Digital Hierarchy
Synchronous Digital Hierarchy
SENCSystem Electronic Navigation Chart
System Electronic Navigation Chart
SFEEAPIStandard Format for Electronic Exchange of AtoN Product Information
Standard Format for Electronic Exchange of AtoNAid to Navigation Product Information
SGMLStandard Generalized Markup Language (ISO 8879 :1986)
Standard Generalized Markup Language (ISOInternational Standardization Organisation 8879 :1986)
SHASidereal Hour AngleSecure Hash Algorithm
Secure Hash Algorithm
SHASidereal Hour AngleSecure Hash Algorithm
Sidereal Hour Angle
SIInternational System of Units
International System of Units
SIDShipping Industry Database Service of the CSS
Shipping Industry Database Service of the CSSCommon Shore-based System (ENAV)
SIGNISigns and Signals on Inland Waterways, UN, ECE, Resolution No 22
Signs and Signals on Inland Waterways, UN, ECE, Resolution NoNumber of cells 22
SIPIMO e-Navigation Strategy Implementation Plan (NCSR1/28, Annex 7 as adopted by MSC94, Nov. 2014)
IMOInternational Maritime Organization e-Navigation Strategy Implementation Plan (NCSR1/28, Annex 7 as adopted by MSC94, Nov. 2014)
SISSignal In Space
Signal In Space
SLAService-Level Agreement
Service-Level Agreement
SMASwedish Maritime Administration
Swedish Maritime Administration
SMARTSpecific, Measurable, Achievable, Realistic, Time scaled
Specific, Measurable, Achievable, Realistic, Time scaled
SMCSAR Mission Co-ordinator
SAR Mission Co-ordinator
SMCPStandard Marine Communication Phrases (IMO)
Standard Marine Communication Phrases (IMOInternational Maritime Organization)
SMPSafety Management Plan
Safety Management Plan
SMSShort Message ServiceSafety Management System
Safety Management System
SMSShort Message ServiceSafety Management System
Short Message Service
SMSCShort Message Service Centre
Short Message Service Centre
SMTSSustainable Maritime Transportation System
Sustainable Maritime Transportation System
SN Circ.Safety of Navigation Circular (IMO)
Safety of Navigation Circular (IMOInternational Maritime Organization)
SNPWGStandardization of Nautical Publications Working Group (IALA)
Standardization of Nautical Publications Working Group (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
SNRSignal to Noise Ratio
Signal to Noise Ratio
SOAService Oriented Architecture
Service Oriented Architecture
SOCState of charge
State of charge
SOGSpeed over Ground
Speed over Ground
SOLASInternational Convention for the Safety of Life at Sea (IMO 1974 as amended)
International Convention for the Safety of Life at Sea (IMOInternational Maritime Organization 1974 as amended)
SOPStandard Operating Procedures
Standard Operating Procedures
SOTDMASelf-Organising Time-Division Multiple Access
Self-Organising Time-Division Multiple Access
SPASpecial Protected Area
Special Protected Area
SQASoftware Quality Assurance
Software Quality Assurance
SRSShip Reporting System
Ship Reporting System
SRUSearch and Rescue Unit
Search and Rescue Unit
SSSignal StrengthSea State
Sea State
SSSignal StrengthSea State
Signal Strength
STCSensitivity-Time Control
Sensitivity-Time Control
STCWInternational Convention on Standards of Training, Certification and Watchkeeping for Seafarers (IMO)
International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (IMOInternational Maritime Organization)
STD./std.Standard
Standard
STMSea Traffic Management
Sea Traffic Management
SVSpace Vehicle (GPS)
Space Vehicle (GPSGlobal Positioning System. Operated by the Government of the United States)
SWCShort Wave Communication Service of the CSS
Short Wave Communication Service of the CSSCommon Shore-based System (ENAV)
SWGShort Wave GMDSS Service of the CSS
Short Wave GMDSSGlobal Maritime Distress and Safety System Service of the CSSCommon Shore-based System (ENAV)
SWMSSafe Work Method Statement
Safe Work Method Statement
SWPSafe Work Procedure
Safe Work Procedure
SWRStanding Wave Ratio
Standing Wave Ratio
SiSilicon
Silicon
SoOPSignals of Opportunity
Signals of Opportunity
TTime periodroll periodTransmissivity
Transmissivity
TTime periodroll periodTransmissivity
roll period
TTime periodroll periodTransmissivity
Time period
TBATo Be Advised
Toobservation duration Be Advised
TBDTo Be Determined
Toobservation duration Be Determined
TBMTool Box Meeting
Tool Box Meeting
TBSTrue Bearing from Seaward
True Bearing from Seaward
TBTTributyltin (anti-fouling paint)
Tributyltin (anti-fouling paint)
TCTechnical Committee (ITU)
Technical Committee (ITUInternational Telecommunication Union)
TCPTransmission Control Protocol
Transmission Control Protocol
TCP/IPTransmission Control Protocol/Internet Protocol
Transmission Control Protocol/Internet Protocol
TCPATime to Closest Point of Approach
Time to Closest Point of Approach
TDTime Difference
Time Difference
TDMATime-Division Multiple Access
Time-Division Multiple Access
TECTechnical
Technical
TEUTwenty-Foot Equivalent Units
Twenty-Foot Equivalent Units
THTrinity House
Trinity House
THLSTrinity House Lighthouse Service
Trinity House Lighthouse Service
TMASTelemedical Maritime Assistance Service
Telemedical Maritime Assistance Service
TMSTraining Management SystemTime/Motion Studies
Time/Motion Studies
TMSTraining Management SystemTime/Motion Studies
Training Management System
TNTrue North
True North
TOTraining Organisation
Training Organisation
TOATime of ArrivalTime Of Arrival of an event in a signal
Time Of Arrival of an event in a signal
TOATime of ArrivalTime Of Arrival of an event in a signal
Time of Arrival
TOETime of Emission
Time of Emission
TONNAGEInternational Convention on tonnage measurement of ships (IMO)
International Convention on tonnage measurement of ships (IMOInternational Maritime Organization)
TOSTraffic Organisation Service (VTS)
Traffic Organisation Service (VTSVessel Traffic Services)
TOTTime of transmission
Time of transmission
TPSNTiming Synch Protocol for Sensor Networks
Timing Synch Protocol for Sensor Networks
TRATransmission Regulatory Authority
Transmission Regulatory Authority
TSETotal System Error
Total System Error
TSMADTransfer Standard Maintenance and Application Development Working Group (IHO)
Transfer Standard Maintenance and Application Development Working Group (IHOInternational Hydrographic Organization)
TSSTraffic Separation Scheme (IMO)
Traffic Separation Scheme (IMOInternational Maritime Organization)
TTATime to Alarm
Time to Alarm
TTITraffic Technology Centre (Germany)
Traffic Technology Centre (Germany)
TVTelevision
Television
TWTerritorial Waters
Territorial Waters
Tccharacter duration
character duration
Tflashflash length
flash length
TmTransmissivity
Transmissivity
Toobservation duration
observation duration
Tperioda light's period
a light'ssecond period
TxTransmission / Transmitter
Transmission / Transmitter
UCUse Case
Use Case
UCARUniversity Corporation for Atmospheric Research
University Corporation for Atmospheric Research
UDREUser Differential Range Error (GPS)
User Differential Range Error (GPSGlobal Positioning System. Operated by the Government of the United States)
UHFUltra High Frequency (300 MHz and 3 GHz)
Ultra High Frequency (300 MHzMegahertz and 3 GHzGigaHertz)
UIAUser Interaction Service of the CSS
User Interaction Service of the CSSCommon Shore-based System (ENAV)
UKUnited Kingdom
United Kingdom
UKCUnder Keel Clearance
Under Keel Clearance
UKHOUK Hydrographic Office
UKUnited Kingdom Hydrographic Office
UMLUnified Modelling Language
Unified Modelling Language
UNCLOSThe United Nations Convention on the Law of the Sea
The United Nations Convention on the Law of the Sea
UNESCOUnited Nations Educational, Scientific and Cultural Organization
United Nations Educational, Scientific and Cultural Organization
UPSUninterruptable Power Supply
Uninterruptable Power Supply
URUser Requirement
User Requirement
URLUniform Resource Locator
Uniform Resource Locator
URNUniform Resource Name
Uniform Resource Name
USUnited States (of America)
United States (of America)
USAUnited States of America
United States of America
USCGUnited States Coast Guard
United States Coast Guard
USD0TUnited States Department of Transportation
United States Department of Transportation
UTCCoordinated Universal Time (Universal Time Co-ordinated)
Coordinated Universal Time (Universal Time Co-ordinated)
UTF-8Universal Character Set (UCS) Transformation Format — 8-bit; (ISO/IEC 10646)
Universal Character Set (UCS) Transformation Format — 8-bitbinary digit; (ISOInternational Standardization Organisation/IEC 10646)
UTMUniversal Transverse Mercator (Projection)
Universal Transverse Mercator (Projection)
UUIDUniversally Unique Identifier
Universally Unique Identifier
UVUltra Violet (light) (10 – 380 nm)
Ultra Violet (light) (10 – 380 nmnanometre (wavelength))
UXGAUltra Extended Graphics Array
Ultra Extended Graphics Array
UpUplink
Uplink
VVolumeVoltVisibility
Visibility
VVolumeVoltVisibility
Volt
VVolumeVoltVisibility
Volume
VADValue Added Data Processing Services group of CSS
Value Added Data Processing Services group of CSSCommon Shore-based System (ENAV)
VATValue Added Tax
Value Added Tax
VAWGVertical Axis Wind Generator
Vertical Axis Wind Generator
VAWTVertical Axis Wing Turbine
Vertical Axis Wing Turbine
VBvolume of buoyancy (m³)
volume of buoyancy (m³)
VDEVHF Data Exchange
VHFVery High Frequency (30 MHz to 300 MHz)VHF Communication Service of the CS Data Exchange
VDESVHF Data Exchange System
VHFVery High Frequency (30 MHz to 300 MHz)VHF Communication Service of the CS Data Exchange System
VDLVHF Data Link
VHFVery High Frequency (30 MHz to 300 MHz)VHF Communication Service of the CS Data Link
VDRVoyage Data Recorder
Voyage Data Recorder
VECVector Chart Service of the CSS
Vector Chart Service of the CSSCommon Shore-based System (ENAV)
VFRVisual Flight RulesVisiting Friends and Relatives (Family)
Visiting Friends and Relatives (Family)
VFRVisual Flight RulesVisiting Friends and Relatives (Family)
Visual Flight Rules
VHFVery High Frequency (30 MHz to 300 MHz)VHF Communication Service of the CS
VHFVery High Frequency (30 MHz to 300 MHz)VHF Communication Service of the CS Communication Service of the CSControl StationCoastal Surveillance
VHFVery High Frequency (30 MHz to 300 MHz)VHF Communication Service of the CS
Very High Frequency (30 MHzMegahertz to 300 MHzMegahertz)
VIDCCTV Video Service (Closed Circuit Television) of the CSS
CCTVClosed-Circuit Television Video Service (Closed Circuit Television) of the CSSCommon Shore-based System (ENAV)
VLCCVery Large Crude Carrier
Very Large Crude Carrier
VLRENAV19-11.4 Figure 7
ENAV19-11.4 Figure 7
VMSVessel Monitoring System
Vessel Monitoring System
VOCVolatile Organic Compounds (paints and solvents)
Volatile Organic Compounds (paints and solvents)
VOSVoluntary observing ship
Voluntary observing ship
VPNVirtual Private Network
Virtual Private Network
VRVirtual Reality
Virtual Reality
VRLAValve-regulated lead-acid (battery)
Valve-regulated lead-acid (battery)
VRSVirtual Reference Station
Virtual Reference Station
VSATVirtual Satellite
Virtual Satellite
VTCVessel Traffic Centre
Vessel Traffic Centre
VTEVessel Technical Error
Vessel Technical Error
VTISVessel Traffic Information Service
Vessel Traffic Information Service
VTMVessel Traffic Management
Vessel Traffic Management
VTMISVessel Traffic Management and Information SystemVessel Traffic Management and Information Services
Vessel Traffic Management and Information Services
VTMISVessel Traffic Management and Information SystemVessel Traffic Management and Information Services
Vessel Traffic Management and Information System
VTSVessel Traffic Services
Vessel Traffic Services
VTSOVessel Traffic Service OfficerVTS Operator
VTSVessel Traffic Services Operator
VTSOVessel Traffic Service OfficerVTS Operator
Vessel Traffic Service Officer
VoIPVoice over Internet Protocol
Voice over Internet Protocol
Wweightwatt
watt
Wweightwatt
weight
W/Kgwatts per kilogram
watts per kilogram
WAASWide Area Augmentation System developed by the Government of the United States
Wide Area Augmentation System developed by the Government of the United States
WAGWave activated generator
Wave activated generator
WANWide Area Network (e.g. the internet)
Wide Area Network (e.gacceleration due to gravity (m/s2). the internet)
WENDWorldwide Electronic Navigational Chart Database
Worldwide Electronic Navigational Chart Database
WERWord Error Rate
Word Error Rate
WETREPWestern European Tanker Reporting System
Western European Tanker Reporting System
WFSWeb Feature Service
Web Feature Service
WGWorking Group
Working Group
WGS84World Geodetic System 1984 (datum and spheroid)
World Geodetic System 1984 (datum and spheroid)
WLwaterline
waterline
WL0initial waterline
initial waterline
WL1heeled waterline
heeled waterline
WMOWorld Meteorological Organization
World Meteorological Organization
WPwaterplane
waterplane
WRCWorld Radiocommunications ConferenceWorld Radio Conference (ITU)
World Radio Conference (ITUInternational Telecommunication Union)
WRCWorld Radiocommunications ConferenceWorld Radio Conference (ITU)
World Radiocommunications Conference
WWAWorld Wide Academy (IALA)
World Wide Academy (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
WWNWSWorld Wide Navigational Warning Service
World Wide Navigational Warning Service
WWRCWorld-Wide Radiocommunication
World-Wide Radiocommunication
WWRNWorld-Wide Radio Navigation
World-Wide Radio Navigation
WWRNPWorld Wide Radio Navigation Plan (IALA)
World Wide Radio Navigation Plan (IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM)
WWRNSWorld Wide Radio Navigation System (IMO)
World Wide Radio Navigation System (IMOInternational Maritime Organization)
WWRNWSWorld-Wide Radionavigation Warning Service
World-Wide Radionavigation Warning Service
Wh/daywatt hour per day
watt hour per day
Wh/kgwatt-hour per kilogram
watt-hour per kilogram
WiFiWireless Fidelity (local area wireless computer networking)
Wireless Fidelity (local area wireless computer networking)
WiMaxWorldwide Interoperability for Microwave Access
Worldwide Interoperability for Microwave Access
WpWatts peak
Watts peak
WsWatt seconds
Watt seconds
X-band8.0 – 12.0 GHz (Note : military designation is I-band)
8.0 – 12.0 GHzGigaHertz (Note : military designation is Icharge currentIntensity-band)
XMLExtensible Mark-up Language
Extensible Mark-up Language
XSLTXML accompanied by a style sheet
XMLExtensible Mark-up Language accompanied by a style sheet
YYes
Yes
YHAYouth Hostel Association (UK)
Youth Hostel Association (UKUnited Kingdom)
ampampere
ampere
arrequired vertical divergence angle
required vertical divergence angle
bitbinary digit
binary digit
cdcandela
candela
cf.compare
compare
cmcentimetre
centimetre
csacross section area
cross section area
dBdeciBel
deciBel
dBideciBel isotropic
deciBel isotropic
dBmdeciBel milliWatt
deciBel milliWatt
e-NAVe-NavigationENAV
e-Navigation
eLORANEnhanced LORAN
Enhanced LORANLong Range Navigation System
eNave-Navigation
e-Navigation
ftfoot
foot
ft-Lfoot-Lambert (Illuminance)
foot-Lambert (Illuminance)
gacceleration due to gravity (m/s2)
acceleration due to gravity (m/s2metres per second squared)
hhour
hour
h/dayhours per day
hours per day
hPahectoPascal
hectoPascal
kcoefficient of sensitivity
coefficient of sensitivity
kHzkilohertz
kilohertz
kVkilovolt
kilovolt
kWKilowatt
Kilowatt
kWh/m2/ykilowatt hours per square metre per year
kilowatt hours per square metre per year
kg/Ikilogram per litre (specific gravity)
kilogram per litre (specific gravity)
kg/mkilograms per metre
kilograms per metre
kg/m3kilograms per cubic metre
kilograms per cubic metre
kgfkilogram-force
kilogram-force
kmkilometre
kilometre
knkilometres per hour
kilometres per hour
l/hlitres / hour
litres / hour
mmetre
metre
m/smetres per second
metres per second
m/s2metres per second squared
metres per second squared
m2square metre
square metre
m3cubic metre
cubic metre
µAmicroampere
microampere
mAmilliampere
milliampere
mVmillivolt
millivolt
mWmilliwatt
milliwatt
mbmass of the buoy (kg)
mass of the buoy (kgkilogram)
met./hydro.meteorological / hydrological (information)
meteorological / hydrological (information)
mimass of each component (kg)
mass of each component (kgkilogram)
min arcminutes of arc
minutes of arc
mmmillimetre
millimetre
mm/hrmillimetre per hour
millimetre per hour
mphmiles per hour
miles per hour
msmillisecond
millisecond
nitunit of luminance equivalent to one candela per square metre
unit of luminance equivalent to one candela per square metre
nmnanometre (wavelength)
nanometre (wavelength)
pHnumeric scale used to specify the acidity or basicity (alkalinity) of an aqueous solution
numeric scale used to specify the acidity or basicity (alkalinity) of an aqueous solution
paper annum
per annum
ppmParts Per Million
Parts Per Million
rdensity (kg/m³)
density (kg/m³)
rho-rhoENAV19-13.2 Table 4 (Does this refer to the Rho-Rho Navigation System?
ENAV19-13.2 Table 4 (Does this refer to the Rho-Rho Navigation System?
ssecond
second
srsteradian (square radian)
steradian (square radian)
vhour angle
hour angle
°degree
degree
±plus or minus
plus or minus
µV/mmicrovolt per metre (signal strength)
microvolt per metre (signal strength)
µsmicrosecond
microsecond
Ωohm
ohm
ηAntenna efficiency
Antenna efficiency
μmmicrometre
micrometre
less than or equal to
less than or equal to
greater than or equal to
greater than or equal to
<less than
less than
>greater than
greater than
%percent
percent
1-DOne dimensional
One dimensional
2-DTwo dimensional
Two dimensional
3-DThree dimensional
Three dimensional
3G3rd Generation (of mobile telecommunications technology)
3rd Generation (of mobile telecommunications technology)
4G4th Generation (of mobile telecommunications technology)
4th Generation (of mobile telecommunications technology)
4WDFour Wheel Drive
Four Wheel Drive