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
The term of Landfall means（）.
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（）.
In the absence of a route leading from seaward，the conventional direction of buoyage generally follows（）.
When steering a tow downstream around the shape of a sand bar，and staying on the proper side of the buoys，an operator should be cautious of（）.
Which instrument is used to predict the approach of a low pressure system（）.
（）is not a type of IALA maritime buoyage system.
The Light List shows a lighted aid to navigation on the left bank. This means that the light can be seen on the starboard side of a vessel（）.
A sailing vessel shall not impede the safe passage of a（）．
When towing in an open seaway，it is important to use a towing line（）.
Which vessel would display a cone，apex downward（）.