The safety stopper that prevents the anchor cable from running free if the cable jumps the

A. riding pawl
B. devil's claw
C. buckler plate
D. spill pipe

A stopper used in securing the ground tackle for sea that consists of a grab attached to a

A. riding pawl
B. buckler
C. devil’s claw
D. locking ring

The word “breadth of a vessel” in International Regulations for Preventing Collision at Sea 1972 means ______.

A. The molded breadth
B. The registered breadth
C. The breadth amidships
D. The maximum breadth

我们试图放下救生艇，但没有成功。

(航海日志)0400 晴，海面中浪，巡视全船正常。推算船位50-00’.2N，001-40’.0W，计程仪读数67’.2。

如果明天下雨，我们将停止卸货。

(航海日志)1105 拖船Satex系右首，按船长和引航员命令用车和拖船。

船舶不得在分道通航制区域内抛锚。

Some of these shoals have been disproved and are not charted． Nevertheless mariners should

A. go
B. proceed
C. move
D. remove

Radar is not only to obtain ________ ，but also to measure their distances away from you．

A. brightness of objects
B. color of targets
C. shape of targets
D. bearings of objects