A.free communication
B.free density
C.free surface
D.negative GM
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A.Land first sighted when vessel approaching from seaward
B.Land last sighted when vessel leaving from a port
C.In sight of one another when vessel underway
D.In sight of an island during a ship on her voyage
A.black and green bands
B.red and green bands
C.red and yellow bands
D.yellow and green bands
A.channel junctions
B.bifurcations
C.fishing traps
D.wrecks or obstructions
A.an anti-clockwise direction around land masses
B.a clockwise direction around land masses
C.an anticlockwise direction around sea masses
D.a clockwise direction around sea masses
A.the lantern panes of unattended lights may not become covered with ice or snow
B.the lantern panes of unattended lights may become covered with ice or snow
C.ice or snow is likely caused colored
D.the white lights are likely caused to appear colored
最新試題
You are sailing south on the Intracoastal Waterway（ICW）when you sight a green can buoy with a yellow square painted on it.Which of the following is TRUE（）.
You are running parallel to the coast and estimate that the current is against you.In plotting a running fix using bearings from the same object on the coast，the greatest safety margin from inshore dangers will result if what speed is used to determine（）.
Which effect does speed through the water have on a vessel which is underway in shallow water （）.
Your ship is in shallow water and the bow rides up on its bow wave while the stern sinks into a depression of its transverse wave system.What is this called（）.
Preferred channel marks are colored with（）．
A sailing vessel shall not impede the safe passage of a（）．
A vessel shall not（）.
Two vessels are approaching each other near head on. What action should be taken to avoid collision?（）.
The approach to the roads and harbor from the（）entails no difficulty.
The term of Landfall means（）.