A.It is faster
B.It is slower
C.There is no change
D.It remains constant for varying propeller revolutions
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A.By its subscriber number
B.By its call sign
C.By its MMSI
D.By its MID
A.Point the horn down
B.Turn cylinder upside-down
C.Break the rupture disc
D.Pull pin，squeeze grip
A.This requires extensive calculation and is usually performed only by a naval architect not by a ship's officer
B.Determine the point where aground and the draft at that point，then calculate it using the grounding formula
C.Use the hydrostatic tables and enter with the mean draft before grounding and the mean draft after grounding
D.Use the inclining experiment formula and substitute the change of trim for the angle of list
A.The further forward and closer to amidships the more readily the tug will trip
B.Placement further aft permits more effective pulling，better steering and eliminates the danger of tripping
C.Installing the bitts down low lowers the center of gravity
D.The height and position of towing bitts has no significance
A.Drape along brackets
B.Hang vertically in a sheltered area
C.Stow in bins at hatch coming side
D.All of the above
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Horizontal subdivision decks forming watertight compartments in the columns of a semisubmersible ship increase the unit’s（）.
Generally speaking，in the Northern Hemisphere，when winds are blowing from between SE and SW the barometric reading（）.
How does foam extinguish an oil fire?（）
How do the height and location of a tug’s towing bitts relate to the danger of tripping?（）
Good seamanship while towing in heavy weather requires all of the following EXCEPT（）.
Hot air can hold（）.
How does a vessel’s rate of turn change when entering shallow water?（）
How can you estimate the position of a tropical storm’s center?（）
How is the annual rate of change for magnetic variation shown on a pilot chart?（）
How are riveted lap joints made watertight?（）