单项选择题
A.stopped with the wind dead ahead
B.stopped with the wind on the beam
C.underway with the wind 30°on the bow
D.underway on a course to provide no apparent wind
单项选择题 What should you do if you have transmitted a distress call a number of times on channel 16 and have received no reply?（）
单项选择题 What is one of the FIRST actions you should take after abandoning and clearing away from a vessel?（）
单项选择题 Upon receipt of a distress message，a merchant vessel is bound to proceed to the scene of the distress. Under which of the following cases would this NOT be true?（）