A sailing vessel underway at night must show which lights?

A. All-round white light only if under 12 metres

B. Anchor light plus sidelights

C. Masthead light, sidelights, and stern light (same as power)

D. Sidelights and stern light only (or optionally a combined tricolour at masthead)

A. Anchor light plus sidelights

B. Masthead (steaming) light forward, second masthead light aft (if over 50m), sidelights (red/green), and stern light (white)

C. Sidelights and two masthead lights, no stern light required

D. All-round white light and sidelights only

A. One all-round red light and masthead light

B. Three all-round red lights and anchor light

C. Two all-round red lights in a vertical line, plus sidelights and stern light if making way

D. Flashing yellow light every 2 seconds

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