默认题库 - 航行值班与海上避碰

单选题

A vessel conducting mine clearing operations will show（）.

A. three balls in a vertical line
B. two balls in a vertical line
C. one ball near the foremast and one ball at each fore yard
D. one diamond near the foremast head and one ball at each fore yard

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单选题

A vessel constrained by her draught may，in addition to the lights prescribed for power-driven vessels in Rule 23，exhibit where they can best be seen（）or a cylinder.

A. two all-round red lights in a vertical line
B. three all-round red lights in a vertical line
C. two all-round yellow lights in a vertical line
D. three all-round green lights in a vertical line

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单选题

A vessel continually lists to one side and has a normal rolling period. Which statement is TRUE?（）.

A. The vessel has negative GM
B. The center of gravity is on the centerline
C. The list can be corrected by reducing KM
D. The vessel has asymmetrical weight distributio

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单选题

A vessel engaged in fishing during the day would show（）.

A. one black ball
B. two cones with bases together
C. a cone，apex downward
D. two cones，apexes together

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单选题

As look-out，you spot an object 45°off your port bow. You should report the object as（）.

A. broad on the port bow
B. 3 points on the port bow
C. 3 points forward of the port beam
D. on the port beam

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单选题

While underway at night you observe a vessel’s range lights in line off your starboard beam． You should（）.

A. come right
B. sound the danger signal
C. continue on your course
D. come left

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单选题

You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.

A. stop your engines
B. sound two prolonged blasts of the whistle
C. sound the danger signal
D. slow to bare steerageway

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单选题

When a vessel sees the other ahead or nearly ahead，by night she could see the masthead lights of the other in a line or nearly in a line or both side lights，（）shall be deemed to exist.

A. head-on situation
B. end-situation
C. crossing situation
D. close-quaters situatio

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单选题

In determining a safe speed（）shall not be among those taken into account.

A. the characteristics，efficiency and limitation of the radar equipment
B. any constraints imposed by the radar range scale in use
C. the effect on radar detection of the sea state，weather and other sources of interference
D. the safe working load of the cranes both on board and ashore

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单选题

In determining a safe speed（）shall not be among those taken into account.

A. the presence of the background light at night
B. the state of wind，sea and current
C. the number of crew on board
D. the draught in relation to the available depth of water

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