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Flashcards in SUP SALV, UWSH, Planning Deck (86):
1

Heave around

Using a capstan to haul in line or chain

2

Slack

Ease out line or loosen so there is no strain

3

Hold

Not allow any more line to go out even with risk of parting

4

Check

Keep a strain but pay out to prevent parting

5

Up Behind

slack off and run slack to a belay point, given when line or cable has been stopped off or falls 2 blocked.

6

Hand over Hand

one hand after the other

7

Take up slack

Heave in line but do not strain

8

Double up

Pass additional bight on all mooring lines, equal train on all

9

Ships mooring lines are numbered

Fore to aft

10

Preparing to come along side you should have __ heaving lines

two

11

Anchor Hawk

Used for dragging for submerged objects, holding power when it snags

12

Grapnel

Used for dragging, bottom search/recovery of small objects

13

Internal Survey

Checking for damage flooding holes cracks

14

External survey

Checking for damage running gear sonar exterior hull

15

Navy Salvage ships are limited to ___tons of bow lifting capacity

150

16

Ars-50 Class heavy lift main bow roller lift per wire

75 tons

17

Ars-50 Class heavy lift Stern rollers

75 tons

18

Ars-50 Class heavy lift rollers used in conjunction

300 tons

19

Beach gear rigged luff on luff bow lift purchase should be monitored with a

dynamometer

20

3 categories of leaks

Minor, moderate, Major

21

Patchs placed externally

when pumping

22

Patchs placed internally

when de-watering

23

DC patchs installed by crew

Always suspect should be replaced

24

Crack repair

Patch extends 6" on all sides, drill at ends of crack, fit patch, weld in place

25

Flat patch

The most common type of patch

26

Ply wood should be ____ the hole dimensions

twice

27

Box patch

Flat patch with sides to fit the hull, built on surface/heavy

28

Three types of cofferdams

Complete, partial, small

29

Cofferdams should have what installed in case of stability issues

Quick flood valves

30

Recovery buoyancy, 4 basic methods

Pumping, blowing, Combo of pump/blow, induced buoyancy

31

Pumping requires _____ prep and set-up time then other de-watering methods

Less

32

Pumping allows the ship to come up _____ giving more control

slower

33

Eductors most common types

S-type (single, Peri-jet (pass 2" solids)

34

Air Lift efficiency governed by

Volume and pressure of air supply relative to water depth, Depth of water, position of inlet

35

Airlifts use Air to create a

Differential pressure in the pipe that lifts

36

Petroleum, Oil, Lubricants POL pumping

Submersible-Hydralic or electric, Pnematic diaphram,

37

Besides pumping ______ is another common type of dewatering

Compressed Air

38

Compressed Air is best used for

Controlled Air blowing will reduce pressure differential.

Regaining sufficient Buoyancy to re-float ships that are sunk on sides or upside down.

39

Compressed Air dewatering initiated when

Casualty is hard up, close to the ground
Conditions are bad surf, surge, ground swell

40

Requirements to dewater with compressed air

Watertight or capable of being made so.
vertical sides capable of being made water tight.
Damage low, Standpipe to carry water
High capacity air compressors, Special relief valve

41

Weight management - 5 methods to reduce ground reaction

Weight management
Induced buoyancy
Ground removal
Lifting
Temporary reductions

42

Ground removal - Scouring

Prop Wash from tugs or ships
jetting pumps
Dredgeing

43

2 most common types of pulling systems used

Tugs
Commercial, Auxillary rescue ship (ARS), Fleet ocean tugs (T-ATF)
Ground Tackle
Linear puller
Purchase system

44

Ground Tackle System 2 types

Direct Pull system
Purchase system

45

Direct Pull Systems

Hydraulic - 200000 up to 300000
Electrical - 110VAC/12VDC 200000

46

Hydraulic power unit

HPU MOD 6 - 50 class only/3800 LBS.

47

Direct Pulls system Advantages

Fewer people to operate than purchase system
Controls can be placed anywhere

48

USN salvage ships carry a minimum of __ pullers and purchases

6

49

3 basic part of a purchase system

standing block, traveling block attached to ground leg, Wire rope rove to sheaves, pulls up to 60 tons

50

Purchase system ground leg is always gripped by

one of the carpenter stoppers

51

Ground Leg (Beach Gear)

Anchor, chain, wire rope, retrival wire and buoys

52

Pulling system uses this most common type of anchor

Drag embedment

53

Navmoor Anchor

6000 LB type modified for salvage

54

Stato Anchor

6000 LB most suitable for beach gear

55

Ells Anchor

8000LB type not as good as stato or navmoor

56

LWT light weight Anchor

6000LB type adjustable flukes

57

Navy stockless

Used as ships bow anchor

58

Chain

2 1/4 die lock, holds anchor to sea floor, resists chaffing

59

Ground leg - Usually one shot of chain is used, how many feet?

90

60

When leading chain around a corner the diameter of the bend must be at least

7 times the diameter of the bar that forms on the chain. 3 links should be in contact with the curved surface.

61

Jewelry - 2 types of detachable links

Standard - connects to same size, Pear shape - connect to different size chain

62

Jewelry - Detachable link components are not

interchangeable

63

Support retrieving or crown wires 2 types

42" steel weighs 325 lbs supports 1100 LBS
40" Nylon 164 LBS supports 1000 LBS

64

Crown Pendant used to

Recover/Reset ground anchor

65

Beach gear should not be used in water deeper than

50 fathoms

66

Currents and water condition

EBB/FLOW/ Rip currents/ Undertow/ Surface current

67

MK 21 SSDS with heavy weight can work in currents

1.5 - 2.5 KNOTS

68

Scuba diver is severely affected by __Knots of current

1

69

Air supply 5 criteria

Flow MMP, Overbottom, duration of depth, EGS

70

ARS class ship equipped for what diving and how deep

Air, 190 FSW

71

coffer damns are defined as

Plug, Patch, or dry chamber externally installed below the waterline

72

2 types of dry chambers

open bottom, open top

73

Navsea ____ has designs for cofferdamns

OOC5

74

Provides underwater profile, hull view, size of openings, appendages

docking plans

75

templateing

process to pattern a hull , forming and sealing surface cofferdamns

76

Primary method of securing a patch

Jbolts or hogging lines

77

Relative motion, overcomeing it

two objects moving at different times, secure object to the ship working on

78

Authorization for work and brief of installation of flange or fitting

Ships duty officer, LWC, Supervisor, dive supervisor, work authorization form

79

Positive verification of fitting/flange integrity from inboard must be done IAW

JFFM Para 2.a

80

Technical work Documents provide

how to construct and install maintenance task

81

Technical work documents contain 3 general types

Maintenance procedures MP
Formal work packages FWP
Controlled work packages CWP

82

FWP provides

Hardware, Software, lubricants IAW MFR specs

83

CWP provides

Higher authority of OQE

84

Work Authorization

Properly authorized and control ensure personnel and ship standards are met

85

All outside activity on ship repair require

Work authorization form

86

WAF is authorized by the

Watch/Duty officer