Poor positional accuracy of charted obstructions has played a certain role in grounding incidents of vessels for many years.
For this reason, ChartWorld has developed an additional CIO+ layer based on new technologies that overlay highly accurate satellite images with information from below the water surface on top of ECDIS systems.
This provides mariners with the most accurate information on shoals and underwater obstructions that may not be accurately represented on current charts.
The new StayAway Areas from ChartWorld give mariners a more complete perspective.
The service dynamically creates an additional demarcation line that is drawn on top of the ECDIS ENC (User Chart).
This line is drawn on both sides of the route and it is used as an additional reference when a vessel has to find its way through waters “behind” the safety contour which are still considered as safe. In this respect, the NoGo line demarcates regions that must not be entered (i.e., NoGo) at all.
To process NoGo data the service in the ChartWorld BackOffice takes the route information and the safety contour settings of the vessel. Then NoGo Areas are derived from those spot soundings and underwater obstructions (wrecks, rocks, obstructions) that have a depth value that is equal to or is less than the ECDIS safety depth.
The service recognizes the need for an additional margin of safety through the use of CATZOC. This guarantees that inaccuracies – which are inherent to all charts - are taken into account.
The regular CIO+ distribution processes takes care of the CIO+ NoGo Area delivery to the vessels.