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Navigation & chartwork

What is the safest response to an uncertain harbour radar picture?

Short answer

Slow, hold safe water or wait, and rebuild the picture before entering

An unresolved entrance calls for the pre-planned safe state while room to wait or abort remains. Revisit Land Echoes and Harbour Approach.

Sources and scope

Reviewed by Richard Moore on . This answer is scoped to international collision-avoidance and small-craft radar practice; check the current chart, publication, local rules and official operational guidance before acting afloat.

Quick check

What is the safest response to an uncertain harbour radar picture?