Rules of the Road · Day Shapes — Diving
A vessel engaged in diving operations that cannot display the full RAM shapes shall exhibit:
- AA single black ball
- BA red flag
- CA rigid replica of the International Code flag 'A' (alpha) at least 1 m high✓ Correct
- DTwo cones
Explanation
A small vessel diving that cannot show the ball-diamond-ball shall display a rigid replica of the Code flag A (alpha, blue-and-white swallowtail) not less than 1 m in height, visible all round.
Authority: COLREGS/Navigation Rules, Rule 27(e)
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