range of tide
height of tide
charted depth
actual water depth
第1题：
Coalescence(聚合) is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ______in size.
A.expand
B.extract
C.increase
D.decrease
第2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3题：
A.is
B.are
C.was
D.were
第4题：
When referring to quantity of barite in a P-tank，ullage is the ______．
A.Distance of the barite surface above the tank bottom
B.Percentage of barite in the tank
C.Distance of the barite surface below the tank cover
D.Total weight of barite in UPC（ullages per centimeter）
第5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6题：
You will find information about the duration of slack water in the ______.
A.Tidal Current Tables
B.Tide Tables
C.American Practical Navigator
D.Sailing Directions
第7题：
The height of tide is the ______.
A.depth of water at a specific time due to tidal effect
B.difference between the depth of the water and the area's tidal datum
C.difference between the depth of the water and the high water tidal level
D.difference between the depth of the water at high tide and the depth of the water at low tide
第8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9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10题：
In determining the scope of anchor line to pay out when anchoring a small boat, one must consider the ______.
A.charted depth of water only
B.depth of water, including tidal differences
C.time and date of anchoring
D.type of anchor being used