The IALA Waterway Risk Assessment Program, or IWRAP, was developed by Danish software company GateHouse, in cooperation with the International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA).
The Danish Maritime Authority recently used this risk analysis tool in the very busy Strait of Gibraltar.
In Denmark itself, IWRAP was used to analyse the risk associated with replacing a light by floating aids to navigation, and to examine the effect of closing down or changing shipping lanes.