Rules of the Road · NUC / RAM / Constrained by Draft
A vessel restricted in her ability to maneuver (RAM) shall show which all-round lights?
- ARed over red — two lights in a vertical line
- BGreen over white — two lights in a vertical line
- CRed, white, red — three lights in a vertical line✓ Correct
- DWhite, red, white — three lights in a vertical line
Explanation
Rule 27(b)(i) requires a RAM vessel to show three all-round lights in a vertical line: the uppermost and lowest lights red, and the middle light white. The mnemonic 'red-white-red' (or a ball-diamond-ball shape by day) signals restricted maneuverability.
Authority: 72 COLREGS Rule 27(b)(i)
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