單項選擇題Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should （）.

A.back your engines
B.stop your engines and drift
C.answer with one prolonged blast
D.sound the danger signal


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.

A.displaying code letter Y (Yankee)
B.sounding five short blasts on his whistle
C.displaying code numeral 5
D.sounding one prolonged blast on his whistle

2.單項選擇題Ice blink is（）.

A.the dark appearance of the underside of a cloud layer due to reflection of a surface of open water
B.the soft light appearance on the underside of a cloud layer due to reflection from a surface of open water
C.the yellowish-white glare on the underside of a cloud layer
D.water sky

3.單項選擇題For operations in pack ice，a vessel should（）.

A.be on an even keel
B.be trimmed slightly by the head
C.have a drag of not more than 60 - 90 centimeters
D.be ballasted so the forefoot is near the surface

5.單項選擇題A vessel proceeding along the bank of a river or channel has the tendency to（）.

A.continue in line with the bank
B.hug the bank
C.sheer away from the bank
D.increase speed

6.單項選擇題In most cases，when a large merchant vessel enters shallow water at high speed the（）.

A.maneuverability will increase
B.speed will increase
C.bow will squat farther than the stern
D.vessel will rise slightly，on a level plane

7.單項選擇題The proximity of pack ice may be indicated by（）.

A.changes in seawater salinity
B.glare on clouds on the horizon
C.changes in air temperature
D.icebergs

8.單項選擇題If a tow sinks in shallow water，you should（）.

A.release it immediately
B.attempt to beach it before it goes under
C.pay out cable until it's on the bottom and place a buoy on the upper end
D.shorten cable to keep it off the bottom

9.單項選擇題A vessel reduces speed without backing. The rate that her speed through the water decreases depends primarily on the（）.

A.vessel's horsepower
B.sea state
C.number of propellers
D.vessel's displacement

10.單項選擇題When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）

A.Icebergs may travel in a direction many degrees different from the sea ice
B.Both icebergs and sea ice will move in approximately the same direction and at the same speed
C.Icebergs and sea ice will move in the same direction，but at different speeds due to the sail effect of the berg
D.Icebergs and sea ice will move in the same direction，but the iceberg will move slower because of its underwater bulk