SUP SALV, UWSH, Planning Flashcards by Joe Erwin

Heave around

Using a capstan to haul in line or chain

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Slack

Ease out line or loosen so there is no strain

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Hold

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

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Check

Keep a strain but pay out to prevent parting

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Up Behind

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

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Hand over Hand

one hand after the other

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Take up slack

Heave in line but do not strain

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Double up

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

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Ships mooring lines are numbered

Fore to aft

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Preparing to come along side you should have __ heaving lines

two

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Anchor Hawk

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

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Grapnel

Used for dragging, bottom search/recovery of small objects

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Internal Survey

Checking for damage flooding holes cracks

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External survey

Checking for damage running gear sonar exterior hull

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Navy Salvage ships are limited to ___tons of bow lifting capacity

150

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

75 tons

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Ars-50 Class heavy lift Stern rollers

75 tons

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Ars-50 Class heavy lift rollers used in conjunction

300 tons

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

dynamometer

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3 categories of leaks

Minor, moderate, Major

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Patchs placed externally

when pumping

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Patchs placed internally

when de-watering

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DC patchs installed by crew

Always suspect should be replaced

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Crack repair

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

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Flat patch

The most common type of patch

Ply wood should be ____ the hole dimensions

twice

Box patch

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

Three types of cofferdams

Complete, partial, small

Cofferdams should have what installed in case of stability issues

Quick flood valves

Recovery buoyancy, 4 basic methods

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

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

Less

Pumping allows the ship to come up _____ giving more control

slower

Eductors most common types

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

Air Lift efficiency governed by

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

Airlifts use Air to create a

Differential pressure in the pipe that lifts

Petroleum, Oil, Lubricants POL pumping

Submersible-Hydralic or electric, Pnematic diaphram,

Besides pumping ______ is another common type of dewatering

Compressed Air

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.

Compressed Air dewatering initiated when

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

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

Weight management - 5 methods to reduce ground reaction

``` Weight management Induced buoyancy Ground removal Lifting Temporary reductions ```

Ground removal - Scouring

Prop Wash from tugs or ships jetting pumps Dredgeing

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 ```

Ground Tackle System 2 types

Direct Pull system | Purchase system

Direct Pull Systems

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

Hydraulic power unit

HPU MOD 6 - 50 class only/3800 LBS.

Direct Pulls system Advantages

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

USN salvage ships carry a minimum of __ pullers and purchases

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

Purchase system ground leg is always gripped by

one of the carpenter stoppers

Ground Leg (Beach Gear)

Anchor, chain, wire rope, retrival wire and buoys

Pulling system uses this most common type of anchor

Drag embedment

Navmoor Anchor

6000 LB type modified for salvage

Stato Anchor

6000 LB most suitable for beach gear

Ells Anchor

8000LB type not as good as stato or navmoor

LWT light weight Anchor

6000LB type adjustable flukes

Navy stockless

Used as ships bow anchor

Chain

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

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

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.

Jewelry - 2 types of detachable links

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

Jewelry - Detachable link components are not

interchangeable

Support retrieving or crown wires 2 types

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

Crown Pendant used to

Recover/Reset ground anchor

Beach gear should not be used in water deeper than

50 fathoms

Currents and water condition

EBB/FLOW/ Rip currents/ Undertow/ Surface current

MK 21 SSDS with heavy weight can work in currents

1.5 - 2.5 KNOTS

Scuba diver is severely affected by __Knots of current

Air supply 5 criteria

Flow MMP, Overbottom, duration of depth, EGS

ARS class ship equipped for what diving and how deep

Air, 190 FSW

coffer damns are defined as

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

2 types of dry chambers

open bottom, open top

Navsea ____ has designs for cofferdamns

OOC5

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

docking plans

templateing

process to pattern a hull , forming and sealing surface cofferdamns

Primary method of securing a patch

Jbolts or hogging lines

Relative motion, overcomeing it

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

Authorization for work and brief of installation of flange or fitting

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

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

JFFM Para 2.a

Technical work Documents provide

how to construct and install maintenance task

Technical work documents contain 3 general types

Maintenance procedures MP Formal work packages FWP Controlled work packages CWP

FWP provides

Hardware, Software, lubricants IAW MFR specs

CWP provides

Higher authority of OQE

Work Authorization

Properly authorized and control ensure personnel and ship standards are met

All outside activity on ship repair require

Work authorization form

WAF is authorized by the

Watch/Duty officer