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单选题
The catenary（）.
A
acts as a reserve length of towing hawser when the tug applies more power，and it dampens the surge effect of the tow
B
gives an approximation of the amount of strain on the towing hawser
C
is the dip in the towing hawser between the tug and the tow
D
All of the above
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更多 “单选题The catenary（）.A acts as a reserve length of towing hawser when the tug applies more power，and it dampens the surge effect of the towB gives an approximation of the amount of strain on the towing hawserC is the dip in the towing hawser between the tug and the towD All of the above” 相关考题
考题
The disadvantage of using a heaving line to pass a towline is that ______.A.it increases the likelihood of collision between the towing vessel and the disabled vesselB.recreational boaters tend to make the heaving line fast to the towed vessel as if it were the towlineC.the monkey fist may injure someoneD.it may reduce the catenary and increase yawing
考题
A chain bridle is used when towing astern because it ______.A.is easy to connectB.provides an effective catenary and absorbs shock due to its weightC.makes rigging a swivel unnecessaryD.prevents the tow from yawing by the drag of the chains in a seaway
考题
单选题The tension on an anchor cable increases so that the angle of the catenary to the seabed at the anchor reaches 10°. How will this affect the anchor in sandy soil?（）A
It will have no effectB
It will increase the holding powerC
It will reduce the holding powerD
It will cause the anchor to snag
考题
单选题The disadvantage of using a heaving line to pass a towline is that（）.A
it increases the likelihood of collision between the towing vessel and the disabled vesselB
recreational boaters tend to make the heaving line fast to the towed vessel as if it were the towlineC
the monkey fist may injure someoneD
it may reduce the catenary and increase yawing
考题
单选题A chain bridle is used when towing astern because it（）.A
is easy to connectB
provides an effective catenary and absorbs shock due to its weightC
makes rigging a swivel unnecessaryD
prevents the tow from yawing by the drag of the chains in a seaway
考题
单选题An advantage of the Christmas Tree towing method is to（）.A
increase the towing hawser's catenary and provide more springB
reduce catenary，allow operation in shallower water，and to release one barge without breaking up the entire towC
enable one tug and its crew without any outside assistance to make up or break down the towD
provide rapid delivery of logs from the northwestern United States to Hawaiian sawmills
考题
单选题Which statement is TRUE concerning hawser towing? （）A
The catenary in a hawser should be sufficient so that the hawser just touches the bottomB
The hawser is of sufficient length for towing when taut between tug and towC
Increasing speed usually increases the catenary in the hawserD
Shortening the tow hawser generally decreases the maneuverability of the tug
考题
单选题In a combination chain and wire rope mooring system，the anchor chain is deployed at the anchor end of the line to（）.A
increase fatigue life of the systemB
reduce the time to retrieve the lineC
increase the holding powerD
reduce the catenary
考题
单选题To reduce the amount of catenary you may（）.A
shorten the hawser or increase the tug's speedB
lengthen the hawser or reduce the tug's speedC
place your tug in ironsD
make a sharp turn
考题
单选题If the situation arose where it became necessary to tow a disabled vessel，which statement is TRUE concerning the towing line?（）.A
The towing line between the two vessels should be clear of the waterB
The towing line should be taut at all times between the vesselsC
There should be a catenary so the line dips into the waterD
None of the above
考题
单选题The major components which determine the length of a catenary in a deployed anchor cable are water depth，cable weight，and（）.A
cable tensionB
water temperatureC
bottom conditionsD
water density
考题
单选题The holding power of an anchor at a given scope of cable increases when the（）.A
amount of chain lying along the bottom increasesB
length of the catenary is reducedC
mooring line tension is increasedD
amount of chain lying along the bottom decreases
考题
单选题In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.A
shock loading on the tow line is reduceB
towing speed is improvedC
the vessel is more visible from the tugD
the catenary of the tow line is reduced
考题
单选题The anchors should be dropped well out from the pier while at a Mediterranean moor to（）.A
eliminate navigational hazards by allowing the chain to lie along the harbor bottomB
increase the anchor's reliability by providing a large catenary in the chainC
permit the ship to maneuver in the stream while weighing anchorsD
prevent damage to the stern caused by swinging against the pier in the approach
考题
单选题The most doubtful and unpredictable factor in a mooring system is the（）.A
ability of the anchors to hold in a seabedB
anchor chain catenary lengthC
variability of the fairleadD
angle of the flukes
考题
单选题Catenary as applied to tow lines denotes the（）.A
dip of the lineB
stretch of the lineC
strain on the lineD
length of the line
考题
单选题The catenary in a towline is（）.A
a short bridleB
the downward curvature of the hawserC
another name for a pelican hookD
used to hold it amidships
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