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第1题
Charted depth is the ______.
A.vertical distance from the chart sounding datum to the ocean bottom,plus the height of tide
B.vertical distance from the chart sounding datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
第2题
Chart depth is the ______.
A.vertical distance from the tidal datum to the ocean bottom, plus the height of tide
B.vertical distance from the tidal datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
第3题
Charted depth is the ______.
A.vertical distance from the tidal datum to the ocean bottom plus the height of the tide
B.vertical distance from the tidal datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
第4题
The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the ______.
A.air gap
B.freeboard
C.penetration
D.water depth
第5题
The soundings on the chart are based on the depth of water available at ______.
A.mean low water
B.mean lower low water
C.mean high water
D.mean high water springs
第6题
The distance between the surface of the water and the tidal datum is the ______.
A.range of tide
B.height of tide
C.charted depth
D.actual water depth
第7题
The distance between the surface of the water and the tidal datum is the______.
A.height of tide
B.charted depth
C.actual water depth
D.range of tide
第8题
Distance along a track line is measured on a Mercator chart by using the ______.
A.latitude scale near the middle of the track line
B.longitude scale near the middle of the track line
C.latitude scale at the midlatitude of the chart
D.latitude or longitude scale at the middle of the scale
第9题
A.the actual depth
B.added to or subtracted from the charted depth
C.multiplied by the charted depth
D.divided by the charted depth
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