更多"Which will NOT reduce yawing of a t"的相关试题:
[单项选择]When towing astern，one way to reduce yawing of the tow is to（）.
A. trim the tow by the stern
B. trim the tow by the head
C. have the tow on an even keel
D. list the tow on the side it is yawing
[单项选择]Which features of a centrifugal pump reduce the need for renewing worn impellers and pump casings?（）
A. Close radial clearance between impeller hub and casing
B. Low rotational speed of impeller
C. Removable end plate
D. Replaceable impeller and casing wearing rings
[单项选择]Which measure should NOT be taken to reduce the pounding of a vessel in a head sea?（）
A. Add ballast in the afterpeak
B. Add ballast forward
C. Alter course
D. Reduce speed
[单项选择]If a vessel under tow starts jumping on its tow line，the most appropriate action to alleviate the condition is to（）.
A. change course
B. slow down
C. heave to
D. adjust tow line length
[单项选择]A tow bridle is attached to the main tow hawser at the（）.
A. bight ring
B. tow hook
C. fishplate
D. swivel
[单项选择]In astern towing，a tow span，also called the tow bar or towing arch，is used to（）.
A. insure that the hawser leads directly aft as it passes over the stern of the towing vessel
B. increase the stability of the towing vessel by raising the hawser off the deck
C. reduce chafing of the towing hawser
D. prevent fouling of the hawser on deck gear located on the stern of the towing vessel
[单项选择]A tow that veers to the side on the end of the towline is said to（）.
A. yaw
B. surge
C. sway
D. swing
[单项选择]A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? （）
A. When the towing vessel enters the fog
B. When the drilling rig enters the fog
C. When the towing vessel can no longer be seen from the rig
D. Immediately
[单项选择]When steering a tow downstream around the shape of a sand bar，and staying on the proper side of the buoys，an operator should be cautious of（）.
A. eddies under the bar
B. swift current under the bar causing loss of control
C. cross-currents pushing the tow away from the bar
D. cross-currents pushing the tow into the bar
[单项选择]In observing rig motion while under tow，the period of roll is the time difference between（）.
A. zero inclination to full inclination on one side
B. full inclination on one side to full inclination on the other side
C. full inclination on one side to the next full inclination on the same side
D. zero inclination to the next zero inclination
[单项选择]If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.
A. pushed ahead
B. towed alongside
C. towed astern
D. Any of the above
[单项选择]The choice of length of tow bridle legs is governed by the（）.
A. expected towing forces
B. capability of retrieving gear
C. freeboard of the unit being towed
D. need to reduce yaw
[单项选择]Vessel towing with the current shall（）tow more than two boats and they must be towed alongside.
A. at times
B. at any time
C. at no time
D. at moment
[单项选择]In securing deck loads for an ocean tow，drill pipe should be（）.
A. galvanized to protect against corrosion
B. held in place with heavy materials such as spare pendant wire
C. limited to no more than five courses high
D. provided with bulwarks at both ends of their bays
[单项选择]I am ready（）tow line.
A. cast
B. to cast of
C. cast off
D. to cast off
[单项选择]A semisubmersible rig under tow should be ballasted down if（）.
A. motion begins to be excessive
B. water begins to break over the pontoons
C. period of roll exceeds 12 seconds
D. forward progress is halted by head wind
[单项选择]When connecting the tow bridle to a tug, the end of the bridle is passed with a（）.
A. heaving line
B. shot line
C. high line
D. messenger line
[单项选择]During the day，a vessel with a tow over 200 meters in length will show（）.
A. a black ball
B. a diamond shape
C. two cones，apexes together
D. one cone，apex upward
