tonnage
reserve buoyancy
draft
freeboard
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：
The recording fathometer produces a graphic record of the ______．
A.bottom contour only up to depths of 100 fathoms
B.depth underneath the keel against a time base
C.contour of the bottom against a distance base
D.depth of water against a distance base
第3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4题：
从水线到船底是“吃水”。（）
第5题：
The hull is divided up into a number of watertight compartments by ______．
A.inner bottom plating and longitudinals
B.decks and bulkheads
C.double bottom girders
D.topside and hopper tank sloping plating and longitudinals
第6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7题：
Air gap is the vertical distance between the bottom of the hull and the ______．
A.Still water level
B.Wave crest
C.Wave crest plus the charted water depth and tidal corrections
D.Wave crest plus the charted water depth and tidal correction and storm surge
第8题：
Insufficient space between the hull and bottom in shallow water will prevent normal screw currents resulting in ______.
A.waste of power
B.sudden sheering to either side
C.sluggish rudder response
D.All of the above
第9题：
（）is applied to the area of the ship’s hull which is out of water when the ship is loaded.
第10题：
线间距离 distance between tracks