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Towing Endorsement > Towing Endorsement > Flashcards

Towing Endorsement Flashcards

1
Q

1) The measurement of the amount of force a towing vessel is capable of applying to a
motionless tow is called

A

bollard pull.

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2
Q

A towing vessel’s capability is best measured by horsepower, bollard pull, maneuverability
and .

A

displacement

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3
Q

An ocean towing bridle should have

A

equal legs of sufficient length.

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4
Q

A towing vessel becomes tripped while towing on a hawser astern. The factor which is most
important when assessing the risk of capsizing is the

A

height of the towline connection.

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5
Q

A towing vessel is tripped when it is pulled

A

sideways by the tow.

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6
Q

term used to describe the dip in a towline that acts as a shock absorber is

A

catenary.

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7
Q

Fittings used for towing must be

A

securely fastened.

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8
Q

The size and material used for towline(s) must meet all of the following requirements,
except f

A

it any spare wire clips carried on board the vessel for repair purposes.

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9
Q

In towing, heaving lines are used for

A

passing a messenger line.

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10
Q

The owner or Master of a towing vessel shall ensure that each person that directs and
controls the movement of the vessel can accomplish all of the following except reduce
speed only where local speed limits are posted.

A

reduce speed only where local speed limits are posted.

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11
Q

The greatest danger of an overriding tow is

A

collision between the tow and the stern of

the towing vessel.

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12
Q

12) On a long ocean tow, the bridle should be made up of two equal lengths of .

A

chain

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13
Q

13) A tow bridle is attached to the main hawser at the

A

fishplate.

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14
Q

The tow makeup that is designed to keep the catenary of the tow hawser to a minimum is
called the

A

christmas tree tow.

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15
Q

A tug is approaching a broken down steamer in moderately heavy weather preparing to take
it in tow. In most cases the tug should approach from

A

downwind.

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16
Q

The owner or Master of a vessel pushing ahead or towing alongside must ensure that each
of the following is appropriate for the vessel’s horsepower and tow arrangement except

A

hydraulic coupling.

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17
Q

In regards to towing “in step” refer to both

A

the towed and towing vessels reach a wave crest or trough at the same time.

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18
Q

A vessel brought alongside should be fended off the towing vessel by .

A

fenders

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19
Q

The towing method which maintains the most control over the tow is a

A

breasted tug towing.

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20
Q

The action which should be taken first if your tow is sinking in shallow water is

A

payout the

towline until the sunken tow reaches bottom

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21
Q

To reduce stress on the towing hawser when towing astern (ocean tow), the hawser should
be .

A

underwater

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22
Q

When towing astern the equipment which should be stowed ready for use near the towline
is

A

axe or cutting torch.

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23
Q

On a shallow water tow, the catenary of the towline should be .

A

small

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24
Q

When towing astern, you notice that another vessel is about to pass between the towing
vessel and the tow. You should immediately

A

slow down and payout the main tow

hawser.

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25
Q

An ocean tow is sinking in deep water. Attempts to sever the towing hawser are
unsuccessful. The action which should now be taken is

A

slip the towline and allow it to

run off of the drum.

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26
Q

Nylon line is better suited than manila for

A

towing astern

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27
Q

The catenary in a towline is the

A

downward curvature of the hawser.

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28
Q

______forward will not reduce yawing of a tow.

A

Stowing deck loads

29
Q

)In regards to towing, “step” refer to

A

both the towed and the towing vessels reach a

wave crest or trough at the same time.

30
Q

Catenary as applied to tow lines denotes the

A

dip of the line.

31
Q

Stern towing bitts are placed well forward of the rudder when hawser towing to allow the

A

stern to swing more freely when using rudder.

32
Q

The line with the most stretch is

A

nylon.

33
Q

A chain bridle is used when towing astern because it

A

provides an effective catenary and

absorbs shock due to its weight.

34
Q

A predictable result of a vessel nearing a bank or edge or a channel is that the

A

stern is

drawn to the bank as the bow sheers off.

35
Q

The knot used to join two lines or two large hawsers for towing is called

A

carrick bend.

36
Q

In regard to a wire towing hawser the term “end-for-end” refer to

A

removing the wire
rope from the drum and reversing it so that the towing end becomes the bitter
end.

37
Q

The biggest problem you generally encounter when towing a single tow astern is .

A

yaw

38
Q

When towing, sudden shock-loading caused during heavy weather can be reduced by using

A

a heavier hawser

39
Q

Your vessel is being towed and back-up wires have been installed. Back-up wires carry the
towing load in the event that the

A

towing bitt or pad-eye fails.

40
Q

___will not reduce yawing of a tow

A

Trimming the tow by the bow

41
Q

A vessel being towed alongside should be positioned at the stern of the towed vessel

A

forward of the stern of the towing vessel for increased maneuverability.

42
Q

The Honolulu (Christmas tree) tow was devised to

A

allow easy removal of a center tow

43
Q

You are being towed by one tug. As you lengthen the bridle legs

A

you reduce the yawing of the vessel.

44
Q

Your vessel is being towed and you are using a tripping rope. A tripping rope of fiber or wire
is used to

A

retrieve the outboard legs of the bridle where they are connected to the
fishplate.

45
Q

_____ could be used as fairleads on a towed vessel.

A

All of the above

46
Q

) When making up a tow connection you should use

A

screw pin shackles.

47
Q

While towing it is desirable for the tug and the tow to ride wave crests simultaneously
because

A

shock loading on the tow is reduced.

48
Q

The catenary in a towline is the

A

downward curvature of the hawser.

49
Q

) A tow span…

A

All of the above.

50
Q

A situation has occurred in which your vessel must be towed. When the towing vessel
passes the towing line to you, you should secure the line to the

A

forward-most bitts.

51
Q

may prevent a tug from tripping or capsizing when towing a large
vessel.

A

Stern towing pins

52
Q

When tandem tug towing, the more powerful of the two tugs should be

A

behind the lead

tug.

53
Q

When towing, a tow hook is used to provide

A

quick release of the hawser.

54
Q

The following statement concerning an automatic towing engine is not true;

A

as tension on

the hawser increases, more line is taken in by the automatic towing engine

55
Q

A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the
tug

A

is from tripping.

56
Q

To reconnect the tow line after it has broken, it is better to use a polypropylene messenger
line because.

A

it floats

57
Q

When towing astern, chafing gear should not be used on a hawser that is attached to a

A

self-tensioning winch.

58
Q

The pivot point of a towboat with a tow ahead is

A

one-third the length of the combined

unit back from the head.

59
Q

While towing sudden shock-loading caused during heavy weather can be reduced by

A

using a heavier hawser.

60
Q

When maneuvering from pull towing to breasted (alongside) towing, a twin-screw vessel is
more likely than a single-screw vessel of equal horsepower

A

to foul the towline.

61
Q

Barges and vessels are ballasted before departure to

A

improve their stability

62
Q

When hip towing, a line led from the bow of the towboat aft to the barge would be a

A

towing line.

63
Q

Tugs sometimes shackle a length of chain into the towline in order to put

A

spring into the towline.

64
Q

When towing another vessel astern, the length of the towing line should be

A

such that the vessels will be “in step”.

65
Q

A tug is approaching a broken down vessel to take it in tow in moderately heavy weather In most cases the tug should approach

A

from downwind.

66
Q

____ is used to prevent twisting of a towing bridle.

A

A fishplate

67
Q

When hip towing, a line led from the stern of the tug forward to the barge provides the
towing pull when .

A

backing

68
Q

It is good practice to use long towlines for ocean tows because the

A

dip in the towline absorbs shock loads.

69
Q

When hip towing, a line led from the bow of the towboat aft to the barge would be a

A

towing line.

Towing Endorsement (1 decks)

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