Lights and Shapes: Identifying a Vessel at Night

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Planned scope. Masthead, sidelights, sternlight, all-round lights, and the special cases from towing to restricted manoeuvrability.

Regulatory anchor. COLREG 1972 Rules 20 to 31; Annex I

Cluster. COLREGs and the navigation record set. Catalogued in research/kb-gap-analysis-conventions.md.

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