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A.not under command
B.aground
C.dredging
D.constrained by her draft

A.three all-round red lights instead of the lights required for a power-driven vessel of her class
B.the same lights as a vessel restricted in her ability to maneuver
C.three all-round red lights in addition to the lights required for a power-driven vessel of her class
D.the lights for a power-driven vessel which is not under command