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Rules of the Road

Vessel not under command

Technical visualVessel-status encounter
Vessel-status encounterA power-driven vessel approaches a vessel displaying a defined navigation status signal.OWN VESSELSTATUS SIGNAL
Vessel-status encounterA power-driven vessel approaches a vessel displaying a defined navigation status signal.OWN VESSELSTATUS SIGNAL
Rule 18 context: the ordinary relationship remains subject to Rules 9, 10 and 13.

NUC

A vessel not under command is a vessel that, through exceptional circumstances, is unable to maneuver as required by the Rules and therefore cannot keep out of the way of another vessel.

This is a defined legal status.

An ordinary recreational boat with an engine failure is not automatically NUC. If it remains able to maneuver effectively by sail, anchor, auxiliary propulsion, current management or another means, the legal analysis can differ.

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