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 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（）.
When using the anchor to steady the bow while approaching a dock you must be aware of the fact that（）.
Which nautical charts are intended for coastwise navigation outside of outlying reefs and shoals（）.
The term of Landfall means（）.
Preferred channel marks are aids to navigation which all following marks other than（）．
The approach to the roads and harbor from the（）entails no difficulty.
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（）.
When approaching Block Island Sound from Long Island Sound，you will enter waters governed by the International Rules of the Road when you（）.
The rules state that vessels may depart from the requirements of the Rules when（）.
Two vessels are approaching each other near head on. What action should be taken to avoid collision?（）.