Rules of the Road · Sailing Vessels
A sailing vessel less than 20 meters in length may combine the sidelights and sternlight into:
- AA single all-round white light
- BA bicolor lantern at the bow
- CAn all-round red and green light at the stern
- DA tricolor lantern at the masthead✓ Correct
Explanation
Rule 25(b) permits sailing vessels less than 20 meters to combine sidelights and sternlight into a tricolor lantern at or near the top of the mast. When this tricolor is used, the separate all-round red-over-green lights at the masthead must NOT also be shown.
Authority: 72 COLREGS Rule 25(b)
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