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All navigable waters are not yet covered by ENC data and vessel may be required to use ECDIS in Raster Chart Display System (RCDS) mode using ARCS / approved raster charts. If suitable ENC charts are not available from any source, then the use of raster charts is accepted only in conjunction with updated folio…
Use of the Safety Depth and the Safety Contour in ECDIS Safety Depth: Value set by the mariner that is used by ECDIS to portray soundings as black if they are equal to or shoaler than the value and gray if they are deeper. Safety Contour Depth: Value set by the mariner that is used by ECDIS…
General ECDIS allows for monitoring of a ship’s position in real-time throughout the voyage and integrates information from GPS, Gyro, Radar, ARPA, AIS and other navigational equipments into a single display. It has several advantages over paper charts as listed below; Continuous route monitoring Continuous monitoring of depth safety contours and soundings Easier voyage planning…
Safety Contour = Dynamic draft + Minimum Net UKC requirement – Height of tide Shallow Contour = One Contour less than Safety Contour 1. Why Height of Tide is being subtracted from the Safety Contour depth? Why it is not added, as we do for depth calculation? Let us use an example to understand this….
Ecdis Failure It is mandatory for the ship’s officer to manually plot position of the vessel frequently to avoid over-reliance on the equipment and to have better situational awareness, should the system fail anytime during the passage. Under-mentioned are possible failures of ECDIS: 1. Power failure 2. Sensor input failure 3. Hardware failure 4. Software…