920_A___UNDERWATER_HULL_INSPECTION_AND_PROPELLER_POLISHING_(rev_A).doc

USNS SALVOR

T-ARS 52

DEC. 10, 2014

ITEM NO. #920

CATEGORY “A”

MSC WDD

UNDERWATER HULL INSPECTION & PROPELLER POLISHING

1.0 ABSTRACT:

1.1 This item provides for an underwater hull inspection, hull cleaning and propeller polishing.

2.0 REFERENCES / ENCLOSURES:

2.1 REFERENCES:

2.1.1 Reference documents include a mix of public

and private information. Private documents, such as SOLAS, ASME or SSPC, are not provided but are considered to be common ship repair industry documents which are available through subscription to the publishing organizations.

2.2 ENCLOSURES:

2.2.1 Diagram of Sea chest & Transducer

locations.

3.0 LOCATION/DESCRIPTION:

3.1 Two (2) Controllable Pitch Propellers, Underwater Hull, Eleven (11) Sea Chests , Transducers and Bow Thruster.

3.2 Two (2) Controllable Pitch Propellers:

-4_Blades ea.

-10 ft 6” Dia.

-Material: Mil-B-21230 Alloy 1.

4.0 GOVERNMENT FURNISHED MATERIAL/EQUIPMENT/SERVICES: None

5.0 NOTES:

5.1 The prime contractor is responsible to insure the diving company used will have proper access to the base and not require special escort by a Government representative or ship’s representative during the performance period.

5.2 The contractor and all subcontractors, regardless of tier must consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors regardless of tier must comply with the requirements of all applicable GTR’s including but not limited to GTR’s 1 through 7 and 25.

6.0 Quality Assurance:

6.1 Ensure the hull survey is documented by pictures or video with dates and labels.

7.0 STATEMENT OF WORK:

7.1 Provide the services of a recognized dive company to inspect the underwater hull from the waterline to the bottom of the keel from stem to transom. Include the two rudders, bilge keels, skeg, sea chests (11), one bow thruster, zincs, speed logs and transducers (2). See enclosure 2.2.1 for lengths and locations of underwater Speed logs , transducers and sea chests.

7.2 Inspect the hull and document with pictures or video, clean and polish propellers to a Rupert “B” finish, clean transducers and remove rope guards clean line/rope and netting from P/S Shafting.

7.3 Provide reports and pictures documenting the condition of the hull, props, transducers and appendages; include photos or video (Pre & Post Cleaning) and a written condition survey to the Port Engineer and Chief Engineer.

8.0 GENERAL REQUIRMENTS: None Additional.

Enclosure 2.2.1

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Rectangle

Callout

Spd. Log Transducer

Callout

Fathometer Transducer

Text Box

Box denotes a Sea chest location.

Line