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单选题
Installing tandem anchors on the same mooring line is referred to as（）.
A
doubling
B
pretensioning
C
piggybacking
D
paralleling
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Mooring winch should be equipped with mechanical brakes capable of holding ______.A.half the breaking strength of the mooring lineB.the full breaking strength of the mooring lineC.the maximum expected tension of the mooring lineD.50% over the working tension of the mooring line
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Mooring winch should be equipped with mechanical brakes which are capable of holding ______.A.half the breaking strength of the mooring lineB.the full breaking strength of the mooring lineC.the maximum expected tension of the mooring lineD.50% over the working tension of the mooring line
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During a storm，the chance of fatigue failure of a mooring line will increase as ______.A.vessel motions increaseB.mooring tensions decreaseC.KG increasesD.KG decreases
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TO SECURE A VESSEL IN A PARTICULAR PLACE BY MEANS OF CHAINS OR ROPES MADE FAST TO THE SHORE，TO ANCHORS，OR TO ANCHORED MOORING BUOYS，OR TO RIDE WITH BOTH ANCHORS DOWN defines ______．A.To moorB.To berthC.To anchorD.To ride at anchor
考题
The indication of a slipping anchor is a（n）______．A.Decrease in mooring line lengthB.Increase in the opposite amperageC.Increase in the opposite line tensionD.Decrease in mooring line tension and amperage
考题
Given the same water depth and line tension, the holding power of a 19 pound / foot wire rope mooring system in comparison to the holding power of a 90 pound / foot chain mooring system will be ______.A.weakerB.equalC.greaterD.Indeterminable
考题
If two mooring lines are to be placed on the same bollard，which method is BEST?______.A.Place the eye from the forward line on the bollard and then place the eye from the second line directly over the firstB.It makes no difference how the lines are placedC.Place the eye from either line on the bollard，and then bring the eye of the other line up through the eye of the first，and place it on the bollardD.Place both eyes on the bollard，in any manner，but lead both lines to the same winch head on the vessel and secure them on the winch
考题
单选题A mooring line leading 45°to the keel，used to check forward or astern movement of a vessel，is called a（）.A
spring lineB
warp lineC
bow lineD
breast line
考题
单选题A mooring line leading at nearly right angles to the keel is a（）.A
bow lineB
breast lineC
spring lineD
stern line
考题
单选题In order to pay out or slack a mooring line which is under strain，you should（）.A
sluice the lineB
surge the lineC
stopper the lineD
slip the line
考题
单选题A mooring line that prevents a vessel from moving sideways away from the dock is a（）.A
bow lineB
breast lineC
stern lineD
spring line
考题
单选题Two mooring lines may be placed on the same bollard and either one cast off first if（）.A
the eye of the second line is dippedB
the mooring lines are doubledC
the bollard has two hornsD
one of the lines is a breast line
考题
单选题An anchor winch should be equipped with mechanical brakes capable of holding（）.A
half the breaking strength of the mooring lineB
the full breaking strength of the mooring lineC
the maximum expected tension of the mooring lineD
50% over the working tension of the mooring line
考题
单选题What is the holding power ratio of an anchor? （）A
Maximum mooring line tension divided by the anchor's weight in airB
Anchor's weight in air divided by the maximum mooring line tensionC
Preloading tension divided by the anchor's weight in airD
Operating tension divided by the anchor's weight in air
考题
单选题The holding power of an anchor is the（）.A
maximum sustained vertical load an anchor will resist before draggingB
maximum sustained horizontal load an anchor will resist before draggingC
maximum sustained vertical load an anchor will resist before the mooring line breaksD
maximum sustained horizontal load an anchor will resist before the mooring line breaks
考题
单选题If two mooring lines are to be placed on the same bollard，which method is BEST?（）.A
Place the eye from the forward line on the bollard and then place the eye from the second line directly over the firstB
It makes no difference how the lines are placedC
Place the eye from either line on the bollard，and then bring the eye of the other line up through the eye of the first，and place it on the bollardD
Place both eyes on the bollard，in any manner，but lead both lines to the same winch head on the vessel and secure them on the winch
考题
单选题The indication of a slipping anchor is a(n)（）.A
decrease in mooring line lengthB
increase in the opposite amperageC
increase in the opposite line tensionD
decrease in mooring line tension and amperage
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Mooring with two bow anchors has which major advantage over anchoring with one bow anchor? （）.A
The vessel will not reverse direction in a tidal currentB
The radius of the vessel's swing will be shortenedC
A mooring approach may be made from any directionD
The vessel will not swing with a change in wind
考题
单选题A mooring line that checks forward motion of a vessel at a pier is a（）.A
bow lineB
forward bow lineC
stern lineD
stern breast line
考题
单选题Given the same water depth and line tension，the holding power of a 19 pound/foot wire rope mooring system in comparison to the holding power of a 90 pound/foot chain mooring system will be（）.A
weakerB
equalC
greaterD
indeterminable
考题
单选题Which statement is TRUE about placing the eyes of two mooring lines on the same bollard?（）A
Put one line at the low point and one at the high point of the bollard so they don't touchB
Take the eye of the second line up through the eye of the first line before putting the second line on the bollardC
Never put two mooring lines on the same bollardD
The mooring line forward should be put on the bollard first
考题
单选题A “spring line” is（）.A
any wire rope used for mooringB
a fire-warpC
a mooring line running diagonally to the keelD
a mooring line perpendicular to the keel
考题
单选题What is normally used to pass a mooring line to a dock?（）A
Distance lineB
GantlineC
Heaving lineD
Tag line
考题
单选题Which mooring line prevents sideways motion of a vessel moored to a pier（）.A
A line led forward from the bowB
A line led aft from the bowC
A line led in the same direction as the keelD
A line led at a right angle to the keel
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