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Bm2 Study Guide > Mooring,anchoring & Towing Operations > Flashcards

Mooring,anchoring & Towing Operations Flashcards

1
Q

What holds the tapered pin in place in a detachable link?

A

A lead plug

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2
Q

What slush is used on a detachable link?

A

40% white lead and 60% tallow

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3
Q

What do you do to the tapered pin to ensure proper seating in the detachable link?

A

Drive it in with a punch and hammer

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4
Q

What type of shackles is he used to attach an anchor to its chain

A

Bending shackle

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5
Q

What are the outboards swivel shot detachable link secured with?

A

Wire locking clip

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6
Q

What does an outboard swivel shot consist of?

A

Detachable links, regular links a swivel end link and a bending shackle

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7
Q

What is the maximum length of an outboard swivel shot

A

Five fathoms

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8
Q

What does an outboard swivel shot allow

A

Stopping off the anchor, and breaking the chain between the windless and anchor

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9
Q

Which navy, stockless anchor has the greatest holding power

A

MK2

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10
Q

What type of anchor is used for a submarine or a buoy?

A

Mushroom

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11
Q

What type of anchors have a serial number?

A

The ones over 100 pounds

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12
Q

Where is an anchor serial number located?

A

On its crown

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13
Q

What type of anchor chain is standard?

A

Die lock

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14
Q

How is the length and width of a link of anchor, chain determined

A

Six times diameter and 3.6 diameter

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15
Q

Where is the link of anchor chain measured?

A

At the end slightly above centerline

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16
Q

Why are navy chain-link studded?

A

To prevent kinking , and to keep the links from pounding adjacent links

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17
Q

How long is a standard shot of anchor chain?

A

15 fathoms

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18
Q

Where is the serial number on a shot of anchor chain?

A

On the other side of the links

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19
Q

What is done when the end link is removed from a shot of anchor chain

A

The new and the link must be engraved or stamped with the serial number

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20
Q

What is used to connect shots of anchor chain?

A

Detachable links

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21
Q

Are detachable links parts interchangeable?

A

No matching numbers are engraved on the c- link and two coupling plates

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22
Q

What stopper is nearest to the hawsepipe

A

Housing stopper

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23
Q

What stopper is furthest aft?

A

Ridding stopper

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24
Q

What part of the stopper straddles the anchor chain

A

The tongue and strong back of the pelican hook

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25
Q

What are stopper secured to the deck with

A

Padeyes

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26
Q

What type of stoppers are used with horizontal shaft windless and where space does not permit standard stoppers

A

Pawl type and devil claw

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27
Q

What should be used to back up stoppers of helping to hold the chain?

A

The wildcat break

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28
Q

What are the ridges on the wildcat which engaged to chain-link called

A

Whelps

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29
Q

Should the wildcat disconnected while the ship was anchored

A

Yes

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30
Q

What is the first the stopper or wildcat break?

A

The wildcat break

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31
Q

What is the difference between riding chain stoppers and towing chain stoppers

A

Towing chain stoppers, have a locking plate added

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32
Q

What colors are detachable links painted?

A

Red white and blue

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33
Q

What color are links on both sides of the detachable link painted?

A

White with the number painted equal to the shot number

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34
Q

How many turns of wire go around the last white stud?

A

One for each shot

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35
Q

What color is each link of the next to last shot?

A

Yellow

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36
Q

What color is each link of the last shot

A

Red

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37
Q

Why is a ship normally backing while letting out anchor chain

A

To prevent piling the anchor chain

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38
Q

Who is in charge of the focsule during anchoring

A

1st Lt

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39
Q

How do you determine the scope of a chain and anchoring in calm seas?

A

5 to 7 times the depth of the water

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40
Q

What items must be at hand when weighing a anchor

A

Fire hose, and grapnel hook

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41
Q

How do you determine the scope of a chain and anchoring in heavy seas?

A

7 to 10 times the depth of the water

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42
Q

What is short stay?

A

Just before the anchor flukes, break free of the bottom

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43
Q

What is up-and-down?

A

When only the anchors crown rest on the bottom

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44
Q

What does anchors away mean?

A

The anchor is clear of the bottom

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45
Q

What is used to prevent water from entering the chain locker via the chain pipes?

A

Jackasses and buckler plates

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46
Q

What are Jackasses?

A

Cone shaped plugs made of canvas stuffed with Oakum

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47
Q

What type of moor is used in crowded harbors?

A

Mediterranean moor

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48
Q

What constitutes Mediterranean Moore?

A

The stern is moore to a pier with both bow anchors out

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49
Q

What is a sheet anchor?

A

A ship’s biggest anchor

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50
Q

What is a stream anchor?

A

An anchor dropped off the stern or quarter to prevent swinging to a current

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51
Q

How does a Danforth anchor compare to a patient (stockless) anchor, as far as strength and holding power?

A

A Danforth anchor has the same strength and holding power as a stockless anchor of twice the size

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52
Q

How are anchor chains on large cutters?

A

A cutter will have an 8 shot and seven shot anchor chain

53
Q

What is the mortise (size of the opening) of a mooring shackle?

A

7 inch

54
Q

What is attached to the end of a mooring swivel?

A

2 links

55
Q

How long is a dip rope?

A

14 to 36 Fathoms

56
Q

What is inserted between the anchor, and the anchor, buoy line

A

A piece of chain to reduce chafing

57
Q

What is a dip rope used for?

A

To moore or clear a hawse

58
Q

What is the breaking strength of a padeye , the anchor, chain, bitter and is connected to

A

1.75 times the strength of the connecting shackle

59
Q

How often are chains 1.5 inch and smaller inspected

A

Quarterly

60
Q

How often are chains larger than 1.5 inch inspected

A

Every 18 months

61
Q

What line eases the buoy wire down the anchor chain

A

Easing out line

62
Q

Where is the anchor, chain, broken to prepare for tow

A

In board of the swivel

63
Q

How do you keep the chain from falling back into the chain pipe after the anchor is disconnected?

A

Put a bar through a link

64
Q

How fast can a windless go when heaving more than 60 fathoms of chain

A

No more than half speed

65
Q

What are two types of shackles

A

Type one (anchor) type two (chain)

66
Q

Where do you measure a shackle?

A

1/4 way up one side 

67
Q

What Is The Name Of A Mooring Line That Runs At A 45 Degree Angle

A

Spring Line

68
Q

In Nylon 3 Strand Mooring Line What Is The Required

A

35 1/2 Inches

69
Q

When Mooring With A 61/2 Inch Mooring Line Or Smaller What Is The Minimun Size In Circumfrence Of The Rattail Stopper

A

3 inches

70
Q

What Is The Term Is Used To Hold A Mooring Line But Not To Let It Get To Parting Strength

A

Check

71
Q

What Type Of Line Can Not Be Used For Navy Ships Mooring Lines

A

Polyproprolenye

72
Q

When Mooring Lines Become Wet What % Is Lost In The Line Strength

A

15%

73
Q

When Lines Are Properly Secured With Round Turns On H Bitts The Line Will Retain What % Of Its Strenght

A

90%

74
Q

When A Standard Eye Splice Is Applied To A New 3 Strand Mooring Line It Will Retain Up To What % of Its Line Strengh

A

90%

75
Q

When Handling Mooring Lines Over 7 Inches What Is The Minimum Size In Circumfrence The Rattail Stopper Should Be

A

5 inches

76
Q

In The Criss Cross Method Of Passing A Stopper What Is The Minimum Number Of Twists Required

A

6

77
Q

Which Mooring Line Is The Forward Bow Spring

A

Line 3

78
Q

Which Mooring Line Is The Forward Quarter Spring Line

A

Line 5

79
Q

Which Moring Line Is The After Quarter Spring Line

A

Line 4

80
Q

Where Possible Position Line Handlers A Minimum Of How Many Degress From The Direct Line Pull

A

90%

81
Q

What Size Line Is Used Fro Tattle Tail Cords In Mooring Lines

A

6 thread

82
Q

What Length Of And How Far Apart Is The Tattle Tail Cord Going To Be On A 3 Strand Nylon Mooring Line

A

35 1/2 Inches Long And 30 Inches Between Marks

83
Q

What Type Of Mooring Lines Lead Straight Across To The Pier

A

Breast

84
Q

When Lines Are Secured On Double Bitts With Fugure 8’s What Percentage Of The Line Strength Is Lost

A

25%

85
Q

What Spring Lines Will Keep The Ship From Moving Forward

A

Lines 2 and 4

86
Q

When A Standard Eye Splice Is Completed On A Nylon Double Braided Mooring Line It Will Retain How Much Of Its Breaking Strenght

A

90%

87
Q

What is Placed On Mooring Lines To Tell You That You Are At Or Near A Lines Safe Working Load

A

Tattle Tail Cord

88
Q

What Is The Primary Purpose Of Using Riding Turns While Mooring

A

To Prevent Lines And Ropes From Surging

89
Q

What Does It Mean When The Tattle Tail Cord Has Become Taut

A

Line Has Reach Safe Working Load

90
Q

What Piece Of Equipment Is Not Needed On An Aft Towing Station

A

Turn Buckle

91
Q

What Type Of Salvage Provides Emergency Salvage To Vessels And Aircraft in Distress At Sea

A

Rescue

92
Q

In The Scoring Current Method Of Salvage Work What Type Of Bottom Will The Method Not Be Effective In

A

Coral And Rock Bottoms

93
Q

When Rigging To Be Towed Where Is The Anchor Chain Fair Lead To

A

Out Of The Bull Noise

94
Q

What Is The Lenght And Size Of The Williams Tow Sled Line

A

3 inch Nylon Double Braided 4,500ft Long

95
Q

How Many Towing Messengers Are Needed For A Towing Rig

A

3

96
Q

What Is Installed On Towing Stoppers That Are Not Installed On Chain Stoppers

A

Locking plate

97
Q

What Type Of Dual Towing Rig Can Be Used When You Can Secure One While Not Disturbing The Other

A

Christmas Tree

98
Q

The Towing Hawser Is What Type And Line Construction

A

Nylon Double Braided

99
Q

How Long Is The Total Length Of The Towing Hawser

A

600Ft

100
Q

What Type Of Salvage Is Concerned With Refloating Vessels Stranded Or Sunk In Exposed Locations Along The Coast

A

Off Shore Salvage

101
Q

What is Used To Attach The Liverpool Bridle To The Tow line While Conducting Salvage Operations

A

Carpenter Stopper

102
Q

Who’s Responsibility Is It To Ensure A Towing Evolution Is Carried Out Safely

A

Safety Observer

103
Q

What Type Of Line Construction Can Not Be Used As A Towing Hawser

A

3 Strand Nylon

104
Q

When Being Towed Once You Have The Towing Ships Hawser On Deck Where Will You Attach It Too

A

Anchor Chain

105
Q

To Prevent The Anchor Chain From Running Back Into The Chain Locker What Must You Do

A

Pass A Steel Bar Through The Chain And Back It Up With A Wire Preventer

106
Q

When Rigging For Being Towed What Acts As The Chaffing Chain

A

Anchor chain

107
Q

What Helps Keep A Catenary In The Towing Hawser When You Are Being Towed

A

Chaffing Chain

108
Q

What Type Of Knots Are Used To Secure The Messengers To The Tow Line

A

Half Hitch, Rolling Hitch, Half Hitch

109
Q

When Should The Tow Rig Be Inspection

A

Before And After Each Use

110
Q

During A Towing Evolution How Many Towing Messengers Will Be Rigged

A

2

111
Q

When Towing A British Ship What Is Used To Connect Both Towing Hawsers Together

A

NATO Towing Link

112
Q

What U.S. Vessel Can’t Be Towed

A

Aircraft Carrier

113
Q

What Is The Primary Objective In Determining The Speed Of A Towing Rig

A

Sea State And Sea Conditions

114
Q

What Is The Last Means Of Passing The Towing Messenger When Conducting A Towing Evolution

A

Floating The Messenger

115
Q

What Type Of Towing Evolution Do You Need A Pelican Hook And No Turnbuckle While Towing

A

To Tow

116
Q

What Is Used To Connect The Nylon Messenger To A Wire Rope Hawser

A

Strap

117
Q

What Is The Primary Way To Communicate Between Ships In An A Towing Evolution

A

Radio or Bull Horn

118
Q

What is The Fastest Way To Communicate Between Ships In An Emergency

A

Sound Signals and Whistle

119
Q

After The Tow Line Has Been Passed What Will The To Be Towed Ship Do Next

A

Release The Brake And Left Slackware Out Of The Chaffing Chain Until It Reaches Out The Bull Noise

120
Q

What Sound Power Circuit Is Used During A Towing Evolution

A

1mc

121
Q

During A Towing Evolution 2 Prolonged Blasts Followed By 5 Short Blasts Means What

A

Let go

122
Q

What Is Needed On The Aft Towing Station Incase You Need To Cut Wires Or Chain Links

A

Cutting Torch

123
Q

How Many Signal Paddles Are Used On An Aft Towing Station

A

1

124
Q

What Is Used As A Fairlead On A Ship Being Towed

A

Bullnose

125
Q

What Is The NATO Towing Link Rated Breaking Strength

A

700,000

126
Q

After The Anchor Chain Is Paid Out The Bull Noise And The Brake Is Set What Will The Towed Ship Do
Next

A

Pass Both Towing Stoppers

127
Q

What Determines How Much Anchor Chain Is Fairlead Out The Bull Noise When Towing

A

Sea State

128
Q

What Type Of Salvage Consists Of Salvaging Ships, Removing Wreckage, And General Salvage Work In Harbors

A

Harbor Salvage

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