If the current and wind are in the same direction，the sea surface represents a wind speed ______.
A.lower than actually exists
B.higher than actually exists
C.that actually exists
D.that has no proportional relationship
An anemometer on a moving vessel measures ______.A.apparent wind speed onlyB.true wind speed and true wind directionC.true wind speed onlyD.apparent wind speed and true wind direction
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For determining the amount of chains used in anchoring operation, which one of the following factors would’t be considered?______.A.selection of landmarksB.character of sea bottomC.strength of current and wind forceD.radius of ship swing to wind or tide
In the Northern Hemisphere a wind is said to veer when the wind ______.A.changes direction clockwise, as from north to east, etcB.changes direction counterclockwise, as from south to east, etcC.changes direction violently and erraticallyD.remains constant in direction and speed
单选题For determining the amount of chains used in anchoring operation,which one of the following factors wouldn’t be considered?（）.A selection of landmarksB character of sea bottomC strength of current and wind forceD radius of ship swing to wind or tide
单选题Solid green arrows on the main body of a pilot chart indicate （）.A prevailing wind directionsB prevailing ocean current directionsC probable surface current flowD shortest great circle routes
单选题On a clear，warm day，you notice the approach of a tall cumulus cloud. The cloud top has hard well defined edges and rain is falling from the dark lower edge. Should this cloud pass directly overhead（）.A it will be preceded by a sudden increase in wind speedB it will be preceded by a sudden decrease in wind speedC the wind speed will not change as it passesD the wind will back rapidly to left in a counterclockwise direction as it passes
单选题A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n) （）.A estimated positionB dead reckoning positionC fixD None of the above
