Rules of the Road · Lookout — Rule 5
Rule 5 requires every vessel to maintain a proper lookout by:
- ASight only
- BRadar only
- CSight and hearing as well as by all available means appropriate to the circumstances✓ Correct
- DPosting one person on the bow at all times
Explanation
A proper lookout uses sight and hearing and all available means (including radar/ARPA, AIS, VHF) appropriate to prevailing conditions, to make a full appraisal of the situation and risk of collision.
Authority: COLREGS/Navigation Rules, Rule 5
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