Installation and configuration
Where do I download IWRAP?
You can download the latest version of IWRAP from the Installation page on this site.
If you experience problems, please feel free to contact Omar Frits Eriksson, ofe_at_frv_dot_dk.
How do I install IWRAP?
Installing IWRAP takes between 10 and 30 minutes, and involves doownlading/copying files, and running the installer script to configure the software - see Installation.
Why do I need a license?
No License no play. The IWRAP software is free off charge for IALA members, however in order to keep track of who is actually using the software, IALA has chosen a licencing scheme that ensures that the sofware expires after a certain period of time. This also helps ensuring that everyone has an updated version of IWRAP.
Who can obtain a license?
Only IALA members can obtain the free IWRAP license.
Non-IALA members are able to buy a license to a commercial variant of IWRAP.
Universities can apply for a time limited license from the IALA secretariat.
How do I get an IWRAP License
When you run the IWRAP program for the first time, the software asks for your contact details and then provides you with the first part of the license key. You are then asked to send this key to IALA (through e-mail). After checking your IALA membership, IALA returns the complete license key which you paste into the software, and you are ready to run the programme.
How long does the license last?
When the license key is issued, the expiration time is defined. This will be a few months in the beginning, but will probably be set to one year once the software is fairly mature.
How many licenses can my organization obtain?
As many as you need.
IALA just wants to keep track of the users of IWRAP.
If I already have a license and I download a new version of IWRAP, will I need a new license?
NO the old license will be valid for the new version of IWRAP until the license expires.
How do I start a new modelling project?
See the User Manual
Why do I get the question "Do you want to upload model to IALA?
IALA wants to collect waterway models from all over the world. The ultimate aim is to put together a global risk model :-).
IALA wants to collect waterway models from all over the world. The ultimate aim is to put together a global risk model :-)
Probabilities or Causation Factors
Are the numbers listed in Causation Probabilities from Literature estimated probabilities of groundings, collisions, ship-bridge collisions or are they causation factors (difference between geometric and actual observed probabilities)?
The numbers listed in the tables are causation factors, i.e. their usage should in principle be as follows:
Number of Incidents pr. year = (Number of candidates pr. year) X (Causation Factor)
Where (Number of candidates pr year) is the outcome of the geometry maths.
Can we use ENC's with IWRAP MK II?
No. IWRAP does not yet support proper ENC's.
However Version 2.0 onwards of IWRAP supports Raster Charts as well as Web Map Services (WMS) such as Google Maps and Open Street maps. Google and Open Street give you only the coastline, not the bathymetry of the waterway so, at present, the only way to display Navigational Charts as background, is to use Raster Charts.
The next release of IWRAP is expected to support WMS based ENC´s.
How is AIS data used in IWRAP?
Are we just using the AIS data to determine leg distribution and volume? Or are we actually uploading the AIS data tracks into IWRAP MK II?
The Basic (free) version of IWRAP does not support automatic import of AIS data. In the Malacca Strait exercise we used external tools for Processing AIS Data to determine volume of traffic, route layout and lateral distribution of traffic on each route leg.
The Danish Maritime Safety Administration (DAMSA) has developed a set of tools external to IWRAP, that are capable of Processing AIS Data to obtain the above mentioned information and to compile it into an IWRAP waterway model file (XML).
The commercial version of IWRAP (released August 2010) includes more or less automatic processing of AIS data.
IWRAP has been tested to run without problems on Windows XP, Vista and Windows 7.
It has also been tested on a Chinese version of Microsoft Windows XP (Tested at Shanghai University).
It has been verified that IWRAP does not (yet) run on MAC.