A.a black ball
B.a diamond shape
C.two cones，apexes together
D.one cone，apex upward
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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
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
最新試題
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?（）.
Daymarks marking the starboard side of the channel when going towards the sea are（）.
A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show （）.
All fog signals shall be sounded every two minutes with the exception of a vessel（）.
A towing vessel 30 meters in length is pushing barges ahead. How many white masthead lights is the vessel REQUIRED to show at night?（）
On entering from seaward，a starboard side daymark will（）.
Environmental loading consists of the forces caused by wind，waves，and（）.
A safe water daymark has what shape? （）
An all-round flashing yellow light may be exhibited by a(n)（）.
Approaching an anchorage in fog，you hear one short，one prolonged，and one short blast in that sequence on a ship’s whistle． This indicates（）.