A.green squares
B.green triangles
C.red squares
D.red triangles
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A.a floodlight
B.two red lights in a vertical line
C.a single red light
D.any visible lights
A.Proceed on present course and speed since the vessel is stopped and making no way through the water
B.Keep clear of the vessel because it has a diver down
C.Attempt to call the vessel on VHF radiotelephone because someone on board requires medical assistance
D.Approach with caution because the vessel is a fishing vessel and its nets are fouled on an obstruction
A.masthead light
B.all-round light
C.sidelight
D.sternlight
A.A vessel towed
B.A vessel not under command and unable to maneuver
C.A vessel anchored giving warning of her position
D.A vessel stopped dead in the water
A.the period of darkness exceeds the period of light
B.there is only a partial eclipse of the light
C.the periods of light and darkness are equal
D.the period of light exceeds the period of darkness
最新試題
A towing vessel 30 meters in length is pushing barges ahead. How many white masthead lights is the vessel REQUIRED to show at night?（）
A power-driven vessel，when towing astern，shall show（）.
As defined in the Rules，a towing light is a yellow light having the same characteristics as a(n)（）.
Environmental loading consists of the forces caused by wind，waves，and（）.
A triangular daymark would be colored（）.
An all-round flashing yellow light may be exhibited by a(n)（）.
An occulting light is one in which（）.
An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.
A vessel towing where the tow prevents her from changing course shall carry（）.
At sea，you are approaching a small vessel and see that it has the signal flag P hoisted. What should you do?（）.