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Showing below up to 500 results in range #251 to #750.

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  1. Fog detector‏‎ (4 categories)
  2. Corrective maintenance‏‎ (4 categories)
  3. Intermediate frequency‏‎ (4 categories)
  4. Radio leading line‏‎ (4 categories)
  5. Buoy lantern‏‎ (4 categories)
  6. Period (of a rhythmic light)‏‎ (4 categories)
  7. Angle of refraction‏‎ (4 categories)
  8. Current (sensitive) relay‏‎ (4 categories)
  9. Cannibalization‏‎ (4 categories)
  10. Gallery‏‎ (4 categories)
  11. Daylight Signal Light‏‎ (4 categories)
  12. Landfall Mark (or Buoy)‏‎ (4 categories)
  13. Grading‏‎ (4 categories)
  14. Reliability (of an observation)‏‎ (4 categories)
  15. Synchronous Lights‏‎ (4 categories)
  16. Ballast Lamp‏‎ (4 categories)
  17. Executive pulse‏‎ (4 categories)
  18. Diameter (of a chain)‏‎ (4 categories)
  19. Light float (2)/fr‏‎ (4 categories)
  20. Resonance (2)‏‎ (4 categories)
  21. High Focal Plane Buoy‏‎ (4 categories)
  22. Projector‏‎ (4 categories)
  23. Binary‏‎ (4 categories)
  24. Optical Axis‏‎ (4 categories)
  25. Safety hand-hold/es‏‎ (4 categories)
  26. Converged Beam‏‎ (4 categories)
  27. Total System Error (TSE)‏‎ (4 categories)
  28. Bright display‏‎ (4 categories)
  29. Amplitude of an observed heavenly body‏‎ (4 categories)
  30. Coverage‏‎ (4 categories)
  31. Buoyant beacon‏‎ (4 categories)
  32. Antenna feed‏‎ (4 categories)
  33. Echoing area‏‎ (4 categories)
  34. Cycle‏‎ (4 categories)
  35. Rebuilding‏‎ (4 categories)
  36. Cardioid reception‏‎ (4 categories)
  37. Atmospheric Refraction‏‎ (4 categories)
  38. Electroluminescence‏‎ (4 categories)
  39. Lantern deck‏‎ (4 categories)
  40. VTS Operator Course Certificate‏‎ (4 categories)
  41. Characteristic‏‎ (4 categories)
  42. Level 2 training‏‎ (4 categories)
  43. Preservation‏‎ (4 categories)
  44. Base line‏‎ (4 categories)
  45. Nominal Range‏‎ (4 categories)
  46. Dielectric lens‏‎ (4 categories)
  47. Retro-Reflector‏‎ (4 categories)
  48. Pseudolite (pseudo-satellite)‏‎ (4 categories)
  49. Beat oscillator‏‎ (4 categories)
  50. Whistle buoy‏‎ (4 categories)
  51. Cones‏‎ (4 categories)
  52. Blinking‏‎ (4 categories)
  53. Oscillating water column‏‎ (4 categories)
  54. Overload‏‎ (4 categories)
  55. Spherical Buoy‏‎ (4 categories)
  56. All-Round Light‏‎ (4 categories)
  57. Diversity reception‏‎ (4 categories)
  58. Track‏‎ (4 categories)
  59. Isolated Danger Mark (or Buoy) (G.B.)‏‎ (4 categories)
  60. Photometer‏‎ (4 categories)
  61. Approaches‏‎ (4 categories)
  62. Cathodic protection/es‏‎ (4 categories)
  63. Global Navigation Satellite System (GNSS)‏‎ (4 categories)
  64. Aural masking‏‎ (4 categories)
  65. Modulator‏‎ (4 categories)
  66. Lateral deviation error‏‎ (4 categories)
  67. Position line‏‎ (4 categories)
  68. Single-Flashing Light‏‎ (4 categories)
  69. Occasional Light‏‎ (4 categories)
  70. Bell striker - Plunger‏‎ (4 categories)
  71. Fix‏‎ (4 categories)
  72. Directional gain‏‎ (4 categories)
  73. Loran Drift control‏‎ (4 categories)
  74. Quick-Flashing Light‏‎ (4 categories)
  75. Focal Distance‏‎ (4 categories)
  76. Alternating Light‏‎ (4 categories)
  77. Correlated Colour Temperature‏‎ (4 categories)
  78. Intermittent duty‏‎ (4 categories)
  79. Buoy lantern/es‏‎ (4 categories)
  80. Starboard Hand Mark (or Buoy)‏‎ (4 categories)
  81. Angle section‏‎ (4 categories)
  82. ELoran‏‎ (4 categories)
  83. Mean power‏‎ (4 categories)
  84. Jetting‏‎ (4 categories)
  85. Articulated beacon‏‎ (4 categories)
  86. Electrical distance‏‎ (4 categories)
  87. Daylight control‏‎ (4 categories)
  88. Useful Life (of a lamp)/es‏‎ (4 categories)
  89. Automatic light vessel‏‎ (4 categories)
  90. Mooring eye‏‎ (4 categories)
  91. Decision Maker‏‎ (4 categories)
  92. Leading Lights (G.B.)‏‎ (4 categories)
  93. Circularly polarized wave‏‎ (4 categories)
  94. Hack boat (GB)‏‎ (4 categories)
  95. Balustrade‏‎ (4 categories)
  96. Projector Lamp (G.B.)‏‎ (4 categories)
  97. Load factor‏‎ (4 categories)
  98. Binary code‏‎ (4 categories)
  99. Flame Arc Lamp‏‎ (4 categories)
  100. Optical Density‏‎ (4 categories)
  101. Conversion‏‎ (4 categories)
  102. Bringing into service‏‎ (4 categories)
  103. Analogue-digital convertor‏‎ (4 categories)
  104. Mantle‏‎ (4 categories)
  105. Craft autonomous integrity monitoring (CAIM)‏‎ (4 categories)
  106. Burn-in‏‎ (4 categories)
  107. Antenna matching unit‏‎ (4 categories)
  108. Echoing volume‏‎ (4 categories)
  109. Receiver radiation‏‎ (4 categories)
  110. Carrier (wave)‏‎ (4 categories)
  111. Atmospheric Transmission Factor‏‎ (4 categories)
  112. Electroluminescence/es‏‎ (4 categories)
  113. Ship Domain‏‎ (4 categories)
  114. Decay time (of a pulse)‏‎ (4 categories)
  115. Lantern gallery‏‎ (4 categories)
  116. VTS Personnel‏‎ (4 categories)
  117. Characteristic frequency‏‎ (4 categories)
  118. Ground chain‏‎ (4 categories)
  119. Pole Beacon‏‎ (4 categories)
  120. Vessel Traffic Service (VTS)‏‎ (4 categories)
  121. Harmful interference‏‎ (4 categories)
  122. T antenna‏‎ (4 categories)
  123. Base line extension‏‎ (4 categories)
  124. Nominal operating cell temperature‏‎ (4 categories)
  125. Dielectric reflector‏‎ (4 categories)
  126. Commutated-capacitor tachometer‏‎ (4 categories)
  127. Pulse‏‎ (4 categories)
  128. Beat reception‏‎ (4 categories)
  129. Filament/es‏‎ (4 categories)
  130. Confidence interval‏‎ (4 categories)
  131. Quality Management System (QMS)‏‎ (4 categories)
  132. Blip‏‎ (4 categories)
  133. Outfall Mark (or Buoy)‏‎ (4 categories)
  134. Overload (2)‏‎ (4 categories)
  135. Allard's Law‏‎ (4 categories)
  136. Diverted Beam‏‎ (4 categories)
  137. Integrated navigation system‏‎ (4 categories)
  138. Anechoic room‏‎ (4 categories)
  139. Isolated danger‏‎ (4 categories)
  140. Photometry‏‎ (4 categories)
  141. Effective range‏‎ (4 categories)
  142. Cathodic protection (2)‏‎ (4 categories)
  143. Elliptically polarized wave‏‎ (4 categories)
  144. Lateral system of marking‏‎ (4 categories)
  145. VTS traffic image‏‎ (4 categories)
  146. Position line (2)‏‎ (4 categories)
  147. Single-Occulting Light‏‎ (4 categories)
  148. Designation of emissions‏‎ (4 categories)
  149. Occultation‏‎ (4 categories)
  150. Bellini-Tosi antenna‏‎ (4 categories)
  151. Fixed-pitch blade‏‎ (4 categories)
  152. Adaptation‏‎ (4 categories)
  153. Directional pattern‏‎ (4 categories)
  154. Loran Envelope match‏‎ (4 categories)
  155. Boost charge‏‎ (4 categories)
  156. Focal Plane (of a lens or focusing reflector)‏‎ (4 categories)
  157. Alternating Sectors‏‎ (4 categories)
  158. Buoy light‏‎ (4 categories)
  159. Periodic duty‏‎ (4 categories)
  160. Angular deviation loss‏‎ (4 categories)
  161. Mean power (2)‏‎ (4 categories)
  162. Curve of Luminous Intensity Distribution‏‎ (4 categories)
  163. Gap coding‏‎ (4 categories)
  164. Electrical scanning‏‎ (4 categories)
  165. Daymark‏‎ (4 categories)
  166. Usual range of a sound signal‏‎ (4 categories)
  167. Grapnel‏‎ (4 categories)
  168. Automatic noise limiter‏‎ (4 categories)
  169. End fire array‏‎ (4 categories)
  170. Mooring line‏‎ (4 categories)
  171. Leading Marks (G.B.)‏‎ (4 categories)
  172. Band pressure level‏‎ (4 categories)
  173. Night effect‏‎ (4 categories)
  174. Light vessel‏‎ (4 categories)
  175. Warning‏‎ (4 categories)
  176. Coincidence factor‏‎ (4 categories)
  177. Bearing - Relative‏‎ (4 categories)
  178. Absorptance/de‏‎ (4 categories)
  179. Lobe‏‎ (4 categories)
  180. Binary coded decimal (notation)‏‎ (4 categories)
  181. Dispersion‏‎ (4 categories)
  182. World-Wide Radio Navigation System‏‎ (4 categories)
  183. Contrast Threshold‏‎ (4 categories)
  184. Forelock‏‎ (4 categories)
  185. Analogue data‏‎ (4 categories)
  186. Drift circle‏‎ (4 categories)
  187. Mantle Burner‏‎ (4 categories)
  188. Burner‏‎ (4 categories)
  189. Antenna radiation resistance‏‎ (4 categories)
  190. Eclipse‏‎ (4 categories)
  191. Service buoy‏‎ (4 categories)
  192. Carrier power‏‎ (4 categories)
  193. Lantern glazing (GB)‏‎ (4 categories)
  194. Ground clutter‏‎ (4 categories)
  195. Axis (of a fixed lens)‏‎ (4 categories)
  196. Multi-point mooring‏‎ (4 categories)
  197. Harmonic radiation‏‎ (4 categories)
  198. Baseband‏‎ (4 categories)
  199. Nominal range of a sound signal‏‎ (4 categories)
  200. Bed (of a machine)‏‎ (4 categories)
  201. Accuracy‏‎ (4 categories)
  202. Root mean square error (RMS)‏‎ (4 categories)
  203. Confidence level‏‎ (4 categories)
  204. Quantity of Light‏‎ (4 categories)
  205. Blip scan ratio‏‎ (4 categories)
  206. Focal Plane (of a light)‏‎ (4 categories)
  207. Overload protection‏‎ (4 categories)
  208. Diverting Prism‏‎ (4 categories)
  209. Corner antenna‏‎ (4 categories)
  210. Radio beacon - Continuous carrier‏‎ (4 categories)
  211. Bulb/es‏‎ (4 categories)
  212. Photopic Vision‏‎ (4 categories)
  213. Efficiency of a sound source‏‎ (4 categories)
  214. Dan buoy‏‎ (4 categories)
  215. Catoptric‏‎ (4 categories)
  216. Modulus of elasticity‏‎ (4 categories)
  217. VTS workstation‏‎ (4 categories)
  218. Position of rest‏‎ (4 categories)
  219. Backwash‏‎ (4 categories)
  220. Navigation Mark‏‎ (4 categories)
  221. Detecting element‏‎ (4 categories)
  222. Visual Range‏‎ (4 categories)
  223. Fatigue‏‎ (4 categories)
  224. Occulting Hood‏‎ (4 categories)
  225. Diffuse Reflection‏‎ (4 categories)
  226. Link‏‎ (4 categories)
  227. Complementary Wavelength‏‎ (4 categories)
  228. Hue‏‎ (4 categories)
  229. Bellini-Tosi direction finder‏‎ (4 categories)
  230. Fixed Lens‏‎ (4 categories)
  231. Adaptation/de‏‎ (4 categories)
  232. Loran Fixed slave time delay‏‎ (4 categories)
  233. Quiescent Load‏‎ (4 categories)
  234. Booster transformer‏‎ (4 categories)
  235. Radar reflector‏‎ (4 categories)
  236. Breadboard model‏‎ (4 categories)
  237. Double sideband transmission (DSB)‏‎ (4 categories)
  238. Buoy light/es‏‎ (4 categories)
  239. Angular frequency‏‎ (4 categories)
  240. Cut-in wind speed (of a wind-power genearator)/es‏‎ (4 categories)
  241. Cap(G.B.)‏‎ (4 categories)
  242. Gas-Filled Lamp‏‎ (4 categories)
  243. Daytime Character‏‎ (4 categories)
  244. Reference frequency‏‎ (4 categories)
  245. Chain stopper‏‎ (4 categories)
  246. Point Vision‏‎ (4 categories)
  247. Superstructure (of a buoy)‏‎ (4 categories)
  248. End point voltage (G.B.)‏‎ (4 categories)
  249. Mooring recovery wire‏‎ (4 categories)
  250. Decoder‏‎ (4 categories)
  251. Clapotis‏‎ (4 categories)
  252. Pre-Focus Cap‏‎ (4 categories)
  253. Band sound power level‏‎ (4 categories)
  254. Nigrescence Time (of a lamp)‏‎ (4 categories)
  255. Light vessel station‏‎ (4 categories)
  256. Collapse load‏‎ (4 categories)
  257. Bearing calibration‏‎ (4 categories)
  258. Fenders/es‏‎ (4 categories)
  259. Oil Lamp/es‏‎ (4 categories)
  260. Binary counter‏‎ (4 categories)
  261. Low Pressure Mercury (Vapour) Lamp‏‎ (4 categories)
  262. World geodetic system (WGS)‏‎ (4 categories)
  263. Luminous Intensity‏‎ (4 categories)
  264. Broadside array‏‎ (4 categories)
  265. Analogue signal‏‎ (4 categories)
  266. Drift circle radius‏‎ (4 categories)
  267. Anti-clutter gain control‏‎ (4 categories)
  268. Mercury Bath‏‎ (4 categories)
  269. Service capacity‏‎ (4 categories)
  270. Carrier power (2)‏‎ (4 categories)
  271. Pitch‏‎ (4 categories)
  272. Mixed Reflection‏‎ (4 categories)
  273. Lantern handhold‏‎ (4 categories)
  274. VTS Supervisor‏‎ (4 categories)
  275. Charge (2)‏‎ (4 categories)
  276. Ground swell‏‎ (4 categories)
  277. Azimuth-stabilised P.P.I.‏‎ (4 categories)
  278. Equi-Angular Lens‏‎ (4 categories)
  279. Derating‏‎ (4 categories)
  280. Tail chain‏‎ (4 categories)
  281. Nominal voltage‏‎ (4 categories)
  282. Compaction‏‎ (4 categories)
  283. Bedplate‏‎ (4 categories)
  284. Filament Support/es‏‎ (4 categories)
  285. On-the-Job Training (AtoN)‏‎ (4 categories)
  286. Direct wave‏‎ (4 categories)
  287. Confidence limits‏‎ (4 categories)
  288. Incandescence‏‎ (4 categories)
  289. Quantization‏‎ (4 categories)
  290. Flicker Photometer‏‎ (4 categories)
  291. Air termination (of a lightning protection system)‏‎ (4 categories)
  292. Focus (of a fixed lens)‏‎ (4 categories)
  293. Overload relay‏‎ (4 categories)
  294. Allied Services‏‎ (4 categories)
  295. Corner reflector‏‎ (4 categories)
  296. Integrity‏‎ (4 categories)
  297. Radio beacon - Dual carrier‏‎ (4 categories)
  298. Angle of Divergence‏‎ (4 categories)
  299. Duplex (2)‏‎ (4 categories)
  300. Calibration marks‏‎ (4 categories)
  301. Physical Photometer‏‎ (4 categories)
  302. Lamp‏‎ (4 categories)
  303. Automatic Identification System (AIS)‏‎ (4 categories)
  304. Emergency Alarm‏‎ (4 categories)
  305. Lattice‏‎ (4 categories)
  306. Vacuum Lamp‏‎ (4 categories)
  307. Chopper‏‎ (4 categories)
  308. Backwash (GB)‏‎ (4 categories)
  309. Detection‏‎ (4 categories)
  310. Code wheel‏‎ (4 categories)
  311. Bayonet Cap‏‎ (4 categories)
  312. Fatigue limit‏‎ (4 categories)
  313. Occulting Light‏‎ (4 categories)
  314. Diffuse Transmission‏‎ (4 categories)
  315. Link (of a chain)‏‎ (4 categories)
  316. Belt (of a fixed lens)‏‎ (4 categories)
  317. Fixed Light‏‎ (4 categories)
  318. Radar reflector response pattern‏‎ (4 categories)
  319. Fog signal emitter‏‎ (4 categories)
  320. Internal Procedures‏‎ (4 categories)
  321. Buoy pocket‏‎ (4 categories)
  322. Angular resolution‏‎ (4 categories)
  323. Cut-in wind speed (of a wind-power generator)‏‎ (4 categories)
  324. Ashlar‏‎ (4 categories)
  325. Reference input signal‏‎ (4 categories)
  326. Superstructure (of a buoy)/es‏‎ (4 categories)
  327. Mooring rope‏‎ (4 categories)
  328. Decometer‏‎ (4 categories)
  329. Leading line‏‎ (4 categories)
  330. Clapper‏‎ (4 categories)
  331. Halide Lamp‏‎ (4 categories)
  332. Pre-Focus Lamp‏‎ (4 categories)
  333. Bandwidth characteristic‏‎ (4 categories)
  334. Collector ring‏‎ (4 categories)
  335. Binary digit‏‎ (4 categories)
  336. Optical Panel‏‎ (4 categories)
  337. Low Pressure Sodium (Vapour) Lamp‏‎ (4 categories)
  338. Marginally detectable bias (MDB)‏‎ (4 categories)
  339. Sector (of a sector light)‏‎ (4 categories)
  340. Mercury switch‏‎ (4 categories)
  341. Recognition of an AtoN Light‏‎ (4 categories)
  342. Cast in-situ piling‏‎ (4 categories)
  343. Atterberg limits‏‎ (4 categories)
  344. Mixed Transmission‏‎ (4 categories)
  345. Lantern tower‏‎ (4 categories)
  346. Refractor‏‎ (4 categories)
  347. VTS area‏‎ (4 categories)
  348. Chart comparison unit‏‎ (4 categories)
  349. Ground wave‏‎ (4 categories)
  350. B-display‏‎ (4 categories)
  351. Equi-Angular Profile‏‎ (4 categories)
  352. Derivative action‏‎ (4 categories)
  353. Clutter‏‎ (4 categories)
  354. Tail tube (of a buoy)‏‎ (4 categories)
  355. Companding‏‎ (4 categories)
  356. Horizontal beam width‏‎ (4 categories)
  357. Acetylene/es‏‎ (4 categories)
  358. Direction Light‏‎ (4 categories)
  359. Incandescence Time (of a lamp)‏‎ (4 categories)
  360. Quantization distortion‏‎ (4 categories)
  361. Time to alarm‏‎ (4 categories)
  362. Float charge‏‎ (4 categories)
  363. Focusing‏‎ (4 categories)
  364. Spindle Buoy‏‎ (4 categories)
  365. Docking Signals‏‎ (4 categories)
  366. Radio beacon - Non-Directional‏‎ (4 categories)
  367. Bullivant nipper‏‎ (4 categories)
  368. Angle of Divergence/de‏‎ (4 categories)
  369. Isophase Light‏‎ (4 categories)
  370. Arc‏‎ (4 categories)
  371. Metal Vapour Lamp‏‎ (4 categories)
  372. Lamp Changer‏‎ (4 categories)
  373. Gong‏‎ (4 categories)
  374. Subsidiary Light‏‎ (4 categories)
  375. Automatic Identification System (AIS) (2)‏‎ (4 categories)
  376. Mole‏‎ (4 categories)
  377. Vacuum Lamp/es‏‎ (4 categories)
  378. Chopping‏‎ (4 categories)
  379. Bad-bearing sector‏‎ (4 categories)
  380. Near Miss‏‎ (4 categories)
  381. Detection (2)‏‎ (4 categories)
  382. Prism‏‎ (4 categories)
  383. Temporary Light‏‎ (4 categories)
  384. Bayonet Cap/es‏‎ (4 categories)
  385. Fault‏‎ (4 categories)
  386. Occupied bandwidth‏‎ (4 categories)
  387. A-N Radio range‏‎ (4 categories)
  388. Diffuser‏‎ (4 categories)
  389. Fixed Mark‏‎ (4 categories)
  390. Directly controlled variable‏‎ (4 categories)
  391. Winter Buoy (U.S.A.)‏‎ (4 categories)
  392. Initial Operational Capability (IOC)‏‎ (4 categories)
  393. Ambient noise‏‎ (4 categories)
  394. Maintenance‏‎ (4 categories)
  395. Buoy station‏‎ (4 categories)
  396. Fresnel Lens‏‎ (4 categories)
  397. Permanent Light‏‎ (4 categories)
  398. Mean time between failures (MTBF)‏‎ (4 categories)
  399. Assembled Lens‏‎ (4 categories)
  400. Landmark‏‎ (4 categories)
  401. Reflectance‏‎ (4 categories)
  402. VTS Centre‏‎ (4 categories)
  403. Channel Light‏‎ (4 categories)
  404. Grid Filament‏‎ (4 categories)
  405. Automatic sequence control‏‎ (4 categories)
  406. Classification of bearings‏‎ (4 categories)
  407. Pre-emphasis‏‎ (4 categories)
  408. Systematic error‏‎ (4 categories)
  409. No-break power system‏‎ (4 categories)
  410. Colorimetry‏‎ (4 categories)
  411. Bearing circle‏‎ (4 categories)
  412. Omega‏‎ (4 categories)
  413. Dilution of precision (DOP)‏‎ (4 categories)
  414. Optical coupler‏‎ (4 categories)
  415. Wreck‏‎ (4 categories)
  416. Luminous Range‏‎ (4 categories)
  417. Brush‏‎ (4 categories)
  418. Participating Vessel‏‎ (4 categories)
  419. Marginally detectable error (MDE)‏‎ (4 categories)
  420. Butane/es‏‎ (4 categories)
  421. Full Operational Capability (FOC)‏‎ (4 categories)
  422. Anti-fouling paint/es‏‎ (4 categories)
  423. Effective Intensity‏‎ (4 categories)
  424. Glare‏‎ (4 categories)
  425. Refresher Training‏‎ (4 categories)
  426. Chart datum‏‎ (4 categories)
  427. Ground wave - Radar‏‎ (4 categories)
  428. Back echo‏‎ (4 categories)
  429. Equiphase zone‏‎ (4 categories)
  430. Lifting eye‏‎ (4 categories)
  431. Fail safe‏‎ (4 categories)
  432. Difference in Time Of Arrival (DTOA)‏‎ (4 categories)
  433. Horizontally polarized wave‏‎ (4 categories)
  434. Threshold of Illuminance‏‎ (4 categories)
  435. Acoustic impedance‏‎ (4 categories)
  436. Direction Light (2)‏‎ (4 categories)
  437. Loran A‏‎ (4 categories)
  438. Confusion region‏‎ (4 categories)
  439. Incandescent (Electric) Lamp‏‎ (4 categories)
  440. Quantization error‏‎ (4 categories)
  441. Floating Mark‏‎ (4 categories)
  442. Focusing Device‏‎ (4 categories)
  443. Radio beacon characteristic‏‎ (4 categories)
  444. Bullseye‏‎ (4 categories)
  445. Angle of Polarization‏‎ (4 categories)
  446. Fusion Frequency‏‎ (4 categories)
  447. Arc (Discharge)‏‎ (4 categories)
  448. Lamp Changer/es‏‎ (4 categories)
  449. Reduced carrier‏‎ (4 categories)
  450. Celestial horizon‏‎ (4 categories)
  451. Gong Buoy (U.S.A.) (2)‏‎ (4 categories)
  452. Automatic Identification System (AIS) (3)‏‎ (4 categories)
  453. Chord line‏‎ (4 categories)
  454. Necessary bandwidth‏‎ (4 categories)
  455. Detection of an AtoN light‏‎ (4 categories)
  456. Light Valve‏‎ (4 categories)
  457. Codes on Alerts and Indicators‏‎ (4 categories)
  458. Feathering‏‎ (4 categories)
  459. Octahedral cluster‏‎ (4 categories)
  460. A-display‏‎ (4 categories)
  461. Diffusion‏‎ (4 categories)
  462. Composite Group-Flashing Light‏‎ (4 categories)
  463. Fixed antenna direction finder‏‎ (4 categories)
  464. Disability Glare‏‎ (4 categories)
  465. Ambiguity‏‎ (4 categories)
  466. Maintenance-free battery‏‎ (4 categories)
  467. Buoy store‏‎ (4 categories)
  468. Fresnel Profile‏‎ (4 categories)
  469. Assigned frequency‏‎ (4 categories)
  470. Vertical beam width‏‎ (4 categories)
  471. Systematic errors‏‎ (4 categories)
  472. Lighthouse‏‎ (4 categories)
  473. Restoration‏‎ (4 categories)
  474. Colour (G.B.)‏‎ (4 categories)
  475. Bearing correction‏‎ (4 categories)
  476. Omega Antipodal effects‏‎ (4 categories)
  477. Sound emitter‏‎ (4 categories)
  478. Distance finding station‏‎ (4 categories)
  479. Wreck (2)‏‎ (4 categories)
  480. Alarm‏‎ (4 categories)
  481. Disturbance‏‎ (4 categories)
  482. Sector Angle‏‎ (4 categories)
  483. Effective acoustic centre‏‎ (4 categories)
  484. Mercury wetted relay‏‎ (4 categories)
  485. Types of service‏‎ (4 categories)
  486. Catadioptric‏‎ (4 categories)
  487. Electromagnetic waves‏‎ (4 categories)
  488. Large navigation(al) buoy‏‎ (4 categories)
  489. Refurbishment‏‎ (4 categories)
  490. Chart error‏‎ (4 categories)
  491. Ground wave suppression‏‎ (4 categories)
  492. Port Hand Mark (or Buoy)‏‎ (4 categories)
  493. Back lobe‏‎ (4 categories)
  494. Equipotential bonding‏‎ (4 categories)
  495. Reserve buoyancy‏‎ (4 categories)
  496. Hazard‏‎ (4 categories)
  497. Failure‏‎ (4 categories)
  498. Rhythmic‏‎ (4 categories)
  499. Horn‏‎ (4 categories)
  500. Threshold of hearing‏‎ (4 categories)

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