CHECKS PRIOR USING ECDIS FOR APPRAISAL AND PASSAGE PLANNING Following checks should be carried out by the Navigating Officer while carrying out passage planning on ECDIS: Not all sea areas are covered by ENC charts. The electronic chart coverage for the voyage must be adequate
In order to negotiate a plan turn, a constant radius turn concept can be used. Theory and procedures of using constant radius turn are explained below. Suppose the vessel has to take a turn in the path marked in above figure (from A to B).
Abort point is the final point at which a ship can take action to avoid passing the point of no return. It is the point after which there is insufficient sea room to safely turn the vessel and return back. Point of no return is the position