DRYDOCKING

ITEM NO. SOR 26-013 CATEGORY "A"

Underwater Hull Cleaning

SOR 26-013 - 1

1.0 ABSTRACT

The purpose of this item is to conduct an Underwater Hull Cleaning in preparation for the vessels upcoming UWILD that will be conducted at another location on another date.

Location: TO BE SENT SEPARATELY

Period of Performance: 21 Sep 2026 – 07 Oct 2026

2.0 REFERENCES

NOTE: PPE verify and update references as required for the applicable vessel prior to submission.

2.1 NAVSEA Drawing No. 801-8388177, Docking Plan

2.2 NAVSEA Drawing No. 085-7488873, Shell Expansion

3.0 ITEM LOCATION/DESCRIPTION

3.1 Location/Quantity

3.1.1 Locations: Underwater hull

3.1.2 Quantity: One

3.2 Item Description/Manufacturer’s Data

Vessel length: 688 ft 11 in

Vessel breadth: 654 ft

Vessel draft (fwd): 22 ft 10 in

Vessel draft (aft): 27 ft 9 in

# of Rudders One

# of Propellers One

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4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE: None

5.0 NOTES

5.1 This work item is applicable to vessels who have

approval from ABS to conduct ABS Rules for Survey After Construction, Part 7, Appendix, Section 1, Underwater Inspections in Lieu of Drydocking Surveys. If a vessel has any outstanding recommendations for repairs to the propeller, rudder, stern frame, underwater structure, or sea valves it may not be eligible for UWILD.

5.2 THIS SHIP CONTAINS HIGH VOLTAGE (HV) ELECTRICAL

SYSTEMS. OBEY ALL POSTED AND VERBAL INSTRUCTIONS REGARDING

SAFETY AND EXCLUSION FROM HIGH VOLTAGE AREAS. AT NO TIME

APPROACH, WORK ON, OR ENTER A HIGH VOLTAGE AREA WITHOUT PROPER

AUTHORIZATION.

5.3 THE T-AKE CLASS ELECTRICAL COLOR CODING DOES NOT

FOLLOW CONSISTENT COLOR SCHEME. THE SHIP IS KNOWN TO HAVE

CURRENT CARRYING CONDUCTORS COLORED GREEN, BLUE, BLACK, AND

WHITE. ASSUME ALL ELECTRICAL CABLES ARE ENERGIZED UNTIL TESTED

AND PROVEN OTHERWISE. TEST ALL ELECTRICAL CABLES TO ENSURE THEY

ARE DE-ENERGIZED PRIOR TO WORKING ON THE ITEM.

5.4 POP LOCATION: TO BE SENT SEPARATELY September 21, 2026

through October 7, 2026.

6.0 QUALITY ASSURANCE REQUIREMENTS: None additional

7.0 STATEMENT OF WORK REQUIRED

7.1 Conduct an Underwater Cleaning sufficiently to support

an ABS UWILD that will be conducted on a later date at another location.

7.2 Coordinate with ship’s force to have associated

equipment locked and/or tagged out per ship’s lock out/tag out policy. When the maintenance is complete, coordinate with ship’s force to have associated equipment unlocked and/or tagged in per ship’s lock out/tag out policy.

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7.2.1 With assistance from the OMT REP tag out all

overboard discharges, pump suctions, cathodic protection systems, jacking gear, and other systems or equipment that could affect divers.

7.3 Conduct a Pre-Survey Planning Meeting with the OMT

REP, Divers Rep, Master, Chief Engineer, and OMT REP in attendance. The meeting agenda and discussion shall, at a minimum, cover:

7.3.1 Verify diver tagout and diver check sheet has been

filled out accurately.

7.3.2 Identify the Diving contractor, the number of

divers to be employed and the type of dive equipment to be used.

Discuss their experience, training and qualifications in underwater photography and NDT if needed.

7.3.3 Discuss means of communication between the bridge, dive team and engine room (direct communications via sound powered phones are preferred).

7.3.4 Discuss procedure/plan for emergencies.

7.3.5 Provide Divers with reference data and instructions

necessary for underwater operations such as means of access to sea chests to inspect the external side of hull connections and sea valves

7.3.6 Discuss divers means to conduct underwater

nondestructive testing for fracture detection, if required.

7.3.7 Discuss the in-water clarity (visibility)to perform

a proper hull cleaning.

7.3.8 Discuss vessels anticipated drafts, pier side

clearance and under keel clearance at the time of the survey.

7.3.9 Discuss impact of tides and currents on divers and

the examination.

7.3.10 Discuss anticipated duration of the hull cleaning

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7.4 Prior to performing the underwater hull cleaning the

Contract shall inspect the condition of the underwater hull and ship systems both before and after the cleaning operation as follows:

7.4.1 The contractor, for his own protection, shall

inspect the hull and appendages to determine the condition prior to cleaning and document on the pre-cleaning biofouling inspection data form

7.4.2 In the event underwater inspection reveals only

light fouling, or in the event underwater inspection reveals excessive calcareous fouling, paint deterioration, or other gross defects affecting the operational capabilities of the ship, e.g., propeller damage; the contractor shall inform the MSCREP and Vessels Chief Engineer of the location and request a decision to proceed or cancel the cleaning operation.

7.5 Conduct underwater hull cleaning. The contractor

shall:

7.5.1 Completely remove all marine fouling from the

entire underwater hull; propeller, and rotating coupling cover(s) and fairwater(s) and rope guard(s); rudder(s); bilge keels, all gratings, screens, and splitter bars on hull penetrations, and appendages.

7.5.2 The area along the ship waterline shall be cleaned

to a height of 12 inches above the waterline; based on ships draft during the cleaning operation.

7.5.3 At completion of the cleaning, the cleaned surface

shall conform to NSTM Chapter 081. Extreme caution shall be exercised by the contractor to prevent damage to the coating and ship systems by any of its operations, procedures, or equipment.

7.5.4 Immediately upon completion of cleaning, the

contractor shall inspect the hull and appendages to determine the condition of accessible components. The contractor shall inspect, photograph, and document the general condition of each accessible component and any damage discovered shall be inspected and documented to the detail of a Level I inspection, as defined in the Underwater Ship Husbandry Manual, Chapter 17, SOR 26-013 - 5

“Inspections”, (NAVSEA S0600-AA-PRO-170). The ship’s Chief Engineer, may request the contractor to perform a more detailed Level II inspection of the damage.

7.6 Upon completion of the survey, restore all access

cover plates, threaded plugs, suction grates, remove all blanks, leaving the vessel in a ready for service condition.

7.7 Reports

7.7.1 When examination and servicing reveal any

deficiency a condition report is to be submitted to the OMT REP with recommended repair and parts required. Submit one electronic copy in Portable Document Format (PDF).

7.7.2 Submit a copy of a video tape with audio commentary

of all external areas of the underwater hull, including rudder, propeller, tailshaft, hull protective system, and all other attached appurtenances. Publish the video on DVD in a format readily accessible/playable using Windows™ software applications such as Windows Media Player, or others. Provide one copy to the vessels Chief Engineer. The Vessels Principal Port Engineer will provide the contractor a DoD Safe Link to upload the video to store in the MSC Technical Library.

7.8 Painting: None additional

7.9 Preparation of Drawings: None

8.0 GENERAL REQUIREMENTS: None additional