Rules of the Road · Day Shapes — Constrained by Draft
A vessel constrained by her draft may display what day shape?
- AA black ball
- BA black diamond
- CA black cylinder✓ Correct
- DA black cone apex up
Explanation
Under the International Rules a vessel constrained by her draft may carry three all-round red lights vertically at night and a black cylinder by day. (Rule 28 has no Inland counterpart.)
Authority: COLREGS Rule 28 (International only)
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