試題詳解

39. A vessel is seen showing two black cones with apexes together in a vertical line one above the other. What does this day time signal indicate?
(A) It is a vessel engaged in any type of fishing.
(B) It is a vessel engaged in fishing, other than trawling.
(C) It is a vessel engaged in trawling.
(D) It is a vessel engaged in underwater operation.