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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


CATZOC (Category of Zone of Confidence)

CATZOC on the ENC in simple terms refers to the Quality and Accuracy of survey data and the applicable error in chart datum that sometimes can greatly affect vessel’s UKC calculations.   Zone of Confidence (ZOC) has 6 Categories named A1, A2, B, C, D

Abort Point & Point Of No Return

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

Actions in the event of ECDIS Failure.

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