20. Vessel A wishes to overtake Vessel B. Which of the following descriptions is correct?
(A) Vessel A is faster than Vessel B
(B) The speed of Vessels A and B is identical
(C) Vessel B is faster than Vessel A
(D) Vessel B should sound one prolonged, one short, one prolonged and one short blast
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統計: A(39), B(1), C(3), D(13), E(0) #3414753
統計: A(39), B(1), C(3), D(13), E(0) #3414753