Rules of the Road: BOTH INTERNATIONAL & INLAND Which vessel would have no white lights visible when...

sidelight and stern light only underway

This question appears to be wrong. A vessel NUC would have a red over read masthead light in accordance with Rule 27(a)(i). A vessel RAM would have Red, White, Red in accordance with Rule 27(b)(i) Therefore the correct answer is C) not D)

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Go Rule 27a; there are 2 red vertical lights, side lights, and a stern light; if during the day 2 black balls; head on would show the 2 vertical red lights and both the sidelights; this is for vessel not under command -making way. the answer is C.