A.the starboard side of the channel
B.the centerline of the channel
C.an obstruction where the preferred channel is to starboard
D.special purpose areas
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A.a black ball
B.a diamond shape
C.two cones，apexes together
D.one cone，apex upward
A.green squares
B.green triangles
C.red squares
D.red triangles
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
最新試題
During the day，a vessel with a tow over 200 meters in length will show（）.
Environmental loading consists of the forces caused by wind，waves，and（）.
A vessel being towed astern，where the length of the tow exceeds 200 meters，will exhibit （）.
The International Regulations for Preventing Collisions at Sea contain the requirements for （）.
On entering from seaward，a starboard side daymark will（）.
A tug is towing three manned barges in line in fog. The first vessel of the tow should sound （）.
A power-driven vessel，when towing astern，shall show（）.
A safe water daymark has what shape? （）
A power-driven vessel underway shall keep out of the way of（）.
A vessel is fishing at anchor on the high seas. Which of the following day signals should she display if she has gear extending out over 150 meters horizontally from the vessel?（）.