A.two all-round red lights in a vertical line B.three all-round red lights in a vertical line C.two all-round yellow lights in a vertical line D.three all-round green lights in a vertical line
A.three balls in a vertical line B.two balls in a vertical line C.one ball near the foremast and one ball at each fore yard D.one diamond near the foremast head and one ball at each fore yard
A.a forward masthead light B.sidelights and a sternlight C.a towing light D.All of the above
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