On the pole side of the trade wind belt，there is an area of

You are located within a stationary high pressure area．Your aneroid barometer is falling very slowly．This indicates a（n）______．

A.Wind shift of 180°

B.Large increase in wind velocity

C.Decrease in the intensity of the system

D.Increase in the intensity of the system

If a sailing vessel with the wind on the port side sees a sailing vessel to windward and cannot tell weather the other vessel has the wind on the port or starboard side, she shall ______.

A.hold course and speed

B.sound the danger signal

C.keep out of the way of the other vessel

D.turn to port and come into the wind

When turning a ship in restricted space with a strong wind，it is normally best to ______．

A.Go ahead on both engines with the rudder hard to one side，if on a twin-screw vessel

B.Back down with the rudder hard to one side，if on a single-screw vessel

C.Take advantage of the tendency to back to port，if on a twin-screw vessel

D.Turn so that the tendency to back into the wind can be used，if on a single-screw vessel

A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest water in the area is on the ______.

A.north side of the mark

B.west side of the mark

C.east side of the mark

D.south side of the mark

On the pole side of the trade wind belt，there is an area of high pressure with weak pressure gradients and light，variable winds．This area is called the ______．

A.Prevailing westerlies

B.Geostrophic winds

C.Doldrums

D.Horse latitudes