A vessel constrained by its draft (CBD) uses which day shape?

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Multiple Choice

A vessel constrained by its draft (CBD) uses which day shape?

Explanation:
Constrained by its draft means the vessel’s depth limits its ability to maneuver, so other ships need to know it may not deviate much from a straight course. In daylight this is indicated by a cylinder as the day shape, a symbol chosen because it visually conveys a compact, restricted profile. This distinguishes it from other signals: a single ball means not under command, and the restricted maneuverability signal uses a group (ball–diamond–ball) rather than a single shape. So the cylinder is the correct day shape for a CBD vessel.

Constrained by its draft means the vessel’s depth limits its ability to maneuver, so other ships need to know it may not deviate much from a straight course. In daylight this is indicated by a cylinder as the day shape, a symbol chosen because it visually conveys a compact, restricted profile. This distinguishes it from other signals: a single ball means not under command, and the restricted maneuverability signal uses a group (ball–diamond–ball) rather than a single shape. So the cylinder is the correct day shape for a CBD vessel.

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