单项选择题

When the anchor is brought to and holding，the horizontal component of anchor cable tensions should equal the（）.

A.displacement tonnage
B.weight forces
C.buoyancy forces
D.environmental forces

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When picking up your mooring at the buoy，the correct method is to（）.

A.approach the buoy with the wind and current astern
B.approach the buoy with the wind and current ahead
C.approach the buoy with wind and sea abeam
D.stop upwind and up current and drift down on the buoy

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When moored with a Mediterranean moor，the ship should be secured to the pier by having（）.

A.a stern line and two quarter lines crossing under the stern
B.a stern line，2 bow lines，and 2 quarter lines leading aft to the pier
C.all regular lines leading to the pier in opposition to the anchor
D.two bow lines and two midship lines leading aft to the pier

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When in command of a lifeboat under oars，the command TOSS OARS means to（）.

A.lift oars to vertical position，trim blades fore and aft with handles resting on the thwarts
B.complete the stroke，come to Oars，raise the oars smartly to the vertical，rest handles on footings and trim blades fore and aft
C.place oars in row locks directly from the boated position or from Stand by oars position
D.complete the stroke (when rowing in ahead motion)，raise the oars with crook of elbow to about 30 degrees，swing blades forward