單項選擇題At 0630 you increase speed to 12.0 knots. At 0645 Race Rock Light bears 294°pgc. At 0700 Race Rock Light bears 293°pgc. Based on this，you should（）.

A.alter course to port
B.maintain course and speed
C.alter course to starboard
D.maintain course and reduce speed


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2.單項選擇題At 0400 your vessel is dead in the water and in heavy fog. Your loran set fixes your position at LAT 41°12.1’N，LONG 72°43.5’W. Bottom samples are taken and indicate a composition of soft mud and shell. Your fathometer reads 40 feet. If the vessel draws 9 feet of water，which of the following is TRUE?（）

A.The bottom samples and fathometer reading prove the loran fix is reliable
B.The bottom samples and fathometer readings indicate that the loran fix is unreliable
C.The information collected indicates that the fathometer may be in error
D.The information collected indicates that the chart is most likely in error

3.單項選擇題At 0230 on 13 August，you are at mile 610.5 AHP when you see about a mile ahead lights on the water near the left bank. What might you see when you come abreast of these lights? （）

A.Privately maintained buoys at a yacht club
B.Government buoys marking the Hurricane Point dikes
C.Barges moored at the Dennis Landing Terminal
D.A pipeline discharging dredge spoil

4.單項選擇題At 0100 you notice that the wind has become SSW’ly and has freshened. At 0200 you sight Stratford Point Lighted Bell Buoy “18” bearing 268°pgc. At 0215 the buoy bears 269°pgc. Which statement is TRUE?（）

A.You should alter course to the right to increase the rate of the bearing change
B.You are making more speed over the ground than you estimated
C.You should alter course to decrease the distance that you will pass off Middle Ground Shoal
D.You can hold the present course and safely pass buoy "18"

5.單項選擇題As you approach Old River Control Structure Light you see a flashing amber light. You should（）.

A.navigate as close to the left descending bank as safety permits
B.navigate as close to the right descending bank as safety permits
C.turn into the inflow channel as the bypass is now open
D.slow your engine speed to not more than 5 mph