Two white lights, the one to the right higher, and a red light. What is it?
Lights seen at night, from top to bottom: white (right), white (left), red (left).
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A power-driven vessel, probably 50 metres or more, port side towards you. A power-driven vessel of 50 metres or more must show two masthead lights, the aft one higher than the forward one (a smaller vessel may show two, but does not have to). The red sidelight shows her port side, so she is heading to your left.
