SOW_TERRAPIN FY25_UWHullCleanInsp_87WPB.doc

Statement of Work (SOW)

CGC TERRAPIN U/W Body, Diver Clean and Inspect

PR# 52000PR250029518

1. Scope

1.1 Intent. This work item describes the requirements for the Contractor to inspect and clean the vessel’s underwater (U/W) body, while the vessel is moored pier side. Affected surfaces or components include, but are not limited to the following:

· Hull plating.

· Shafts.

· Transducers

· Propellers.

· Rudders.

· Sea chests and gratings.

· Miscellaneous appendages (examples: bilge keels, rope guards, and fairwaters).

PERIOD OF PERFORMANCE

The period of performance is requested to be completed between 25 August 2025 – 12 September 2025.

PLACE OF PERFORMANCE

The primary place of performance shall be at the below location/address.

CGC TERRAPIN

USCG Base Ketchikan

1300 Stedman St.

Ketchikan, AK 99901

Cutter Point of Contact:

MKC Aaron Wills, Engineer Petty Officer

Cell: (360) 477-2380 Email: Aaron.S.Wills@uscg.mil Contracting Officer Technical Representative (COR)

CWO Jim Beechey

Office: (757) 628-4632

Email: James.E.Beechey@uscg.mil

2. REFERENCES

Coast Guard Drawings

Coast Guard Drawing 87 WPB 085-013, Rev B, Docking Plan

Coast Guard Drawing 87 WPB 111-001, Rev H, Shell Expansion

Coast Guard Drawing 87 WPB 161-001, Rev C, Skeg Construction

Coast Guard Drawing 87 WPB 243-003, Rev -, Propulsion Shaft Details

Coast Guard Drawing 87 WPB 562-001, Rev A, Rudder Details

Coast Guard Publications

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2022, General Requirements

Other References

Code of Federal Regulations (CFR) Title 29, Part 1910, Subpart T, 2011, Commercial Diving Operations

3. REQUIREMENTS

3.1 General.

3.1.1 CIR.

None.

3.1.2 Tech Rep.

Not Applicable.

3.1.3 Protective measures. The Contractor must furnish and install all protective measures in accordance with SFLC Std Spec 0000, paragraph 3.3.3 (Vessel component, space, and equipment protection).

3.1.4 Interferences. The Contractor must handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.1.5 Dive notification. The Contractor must provide the Coast Guard Inspector 24 hours advance notice of when the diver inspection will occur. Before diving procedures commenced, meet with the Cutter EPO, to discuss diving safety requirements and the securing of cutter machinery, as applicable.

3.2 Pre-diving requirements.

3.2.1 The Contractor must, in accordance with 29 CFR 1910.401-440, provide a certified diver and a tender team, as well as necessary support personnel and equipment, to accomplish the tasks specified herein.

WARNING

Mixed gas diving and live boating are not permitted.

3.2.2 The Contractor must ensure that the diving team must obtain clearance from the Officer-of-the-Deck (OOD) before beginning diving operations. Ensure the Coast Guard has capability for maintaining continuous two-way communication with diving personnel at all times, during the performance of this work item.

3.3 Inspection requirements. Using the drawings listed in Section 2 as guidance, the Contractor must perform the following inspections and fill out forms provided in Section 4.

3.3.1 Conduct a pre-clean biofouling inspection. Fill out Form 4-1, including fouler rating for each component (see Table 1 for fouler rating descriptions).

NOTE:

When completing the fouler rating, ensure that all (100%) of the area of the component/surface being inspected has a fouler rating. For example, if only 50% of the rudder has growth at a FR-20 rating, then there should be another rating on the rudder that is FR-0 rating over 50% of the area. All ratings should equal 100% of the area/component being inspected.

Table 1 - fouling ratings (Fr) in order of increasing severity

TABLE 2 - PAINT DETERIORATION RATINGS (PDR) FORANTIFOULING/ANTICORROSION (AF/AC) PAINT SYSTEM

3.3.2 Conduct diver hull inspection. Fill out Form 4-2. Complete any additional inspection forms as required to document underwater component damage (Forms 4-2, 4-3, and 4-4). See Table 2 for description of Paint Deterioration Ratings (PDR’s).

3.4 Cleaning requirements. The Contractor must employ suitable means to clean the U/W body surfaces free of all marine growth, debris, and all other surface contaminants as detected during biofouling inspection. The Contractor must ensure the following:

3.4.1 Ensure all transducer surfaces are cleaned with only hand held brushes, without the use of power attachments.

3.4.2 Ensure that existing u/w body coating system or non-coated surfaces do not incur any damage during cleaning process.

3.5 Additional documentation requirements. The Contractor must submit video highlights of underwater body surfaces (e.g. bow thruster, propellers, rudders, transducers, heavily fouled hull areas, etc.) before and after cleaning. Place linear measuring devices, as applicable, in the field of view when videotaping hull damages, to provide scale for these damages.

4. NOTES

4.1 Unit responsibilities. The ship's force will tag-out and secure the following:

· All propulsion machinery and shafting and all steering machinery whenever the diver is in the water.

· All underwater body transducers, including the sonar equipment, for the duration of the underwater hull cleaning operation.

· All active cathodic protection equipment for the duration of the hull cleaning operation.

· Each sea suction while the diver is inspecting the sea suction's sea chest strainer.

4.2 Inspection forms. (See following pages)

FORM 4-1. PRE-CLEAN BIOFOULING INSPECTION DATA

PAINT

TYPE: ANTIFOULING: ANTICORROSION:

N/A NOT INSPECTED

( PERCENTAGES MUST ADD UP TO 100 )

FOULING RATING FOULING RATING FOULING RATING

PROPELLER Centerline

Port Outboard

Port Inboard

Starboard Inboard

Starboard Outboard

SHAFT Centerline

Port Outboard

Port Inboard

Starboard Inboard

Starboard Outboard

RUDDER Centerline

Port

Starboard

SONAR DOME Port Side

Starboard Side

SEA CHEST Typical

BOW Port

Starboard

SIDES Port

Starboard

BOTTOM Port

Starboard

STERN Port

Starboard

TRANSOM Port

Starboard

Signature (Ship’s Engineer):_______________________________________________________

Signature (Diving Supervisor):______________________________________________________

FORM 4-2. DIVER HULL INSPECTION DATA

PAINT

TYPE: ANTIFOULING: ANTICORROSION:

UNDERWATER WORK ACCOMPLISHED THIS DATE

□ FULL CLEAN

□POLISH

□MULTI-BRUSH

□INSPECT

□PAINT

□INTERIM

□HYDRO

□HAND-HELD

□REPAIR

□OTHER__________________________________

1.

HULL COATING SYSTEM (PDR___________)

a.

ANTIFOULING PAINT

PERCENTAGE REMAINING________________

PERCENT REJUVENATION________________

IS THE A/F □ HARD □ SOFT

PERCENTAGE

__________ PEELING

__________ LOCALIZED or

__________ GENERAL

__________ BLISTERING

__________ ABRASION

__________ GENERAL

CONDITION SUMMARY [ IF PAINT DAMAGE IS LOCALIZED, GIVE LOCATION(s) ] b)

ANTICORROSION PAINT

PERCENTAGE REMAINING _______________

PERCENTAGE

__________ PEELING

__________ BLISTERING

__________ ABRASION

__________ GENERAL

CONDITION SUMMARY [ IF PAINT DAMAGE IS LOCALIZED, GIVE LOCATION(s) ] c)

DOCKING BLOCK AREAS (PDR _________)

AVERAGE PERCENTAGE OF BLOCK AREAS PAINTED ____________________ %

BARE METAL PITTING ____________________ % __________________ IN. DIAMETER ____________________ IN. DEEP

CONDITION SUMMARY [ IF PAINT DAMAGE IS LOCALIZED, GIVE LOCATION(s) ]

FORM 4-2. DIVER HULL INSPECTION DATA (CONTINUED)

2.

CATHODIC PROTECTION SYSTEM

a. SACRIFICIAL ANODES (ZINCS)

AVERAGE PERCENTAGES OF ANODES REMANING ____________________ %

ANODES ARE:

□ UNIFORMLY WASTED

□ WASTAGE GREATEST IN FOLLOWING AREAS:

ANODES ARE :

□ WELDED

□ BOLTED

□ BOTH

NUMBER AND LOCATION OF ANY ANODES MISSING OR INACTIVE:

MISSING___________________________________________________

INACTIVE__________________________________________________

b.

IMPRESSED CURRENT □ NOT APPLICABLE

□ DAMAGE NOTED ON ATTACHED DRAWING

(Port/Stbd)

(FRAME ____________________ )

□ WIRES LOOSE, BROKEN, OR MISSING

□ CAPASTIC SHIELD DAMAGE

□ INSULATORS LOOSE OR DAMAGED

□ OTHER

3. GENERAL HULL DAMAGE (HULL PLATING, BILGE KEELS, etc.):

4.

HULL PENETRATIONS (PDR _________)

_______________ % CLOGGED WITH MARINE GROWTH (POST CLEAN)

_______________ % BARE METAL (AREA SURROUNDING PENETRATION)

_______________ % BARE METAL PITTING

AVERAGE PIT SIZE: _______________ in. DIAMETER, _______________ in. DEPTH

CONDITION SUMMARY: ___________________________________________________

FORM 4-2. DIVER HULL INSPECTION DATA (CONTINUED)

5.

SONAR DOME □ NOT APPLICABLE

□ NO VISIBLE DAMAGE □ DAMAGE NOTED ON ATTACHED DRAWING □ CUTS

□ LAYER SEPARATION □ WIRE PILES EXPOSED

6.

PROPULSION SHAFTING

VISIBLE BARE METAL □ YES □ NO

RUST BLEEDING □ YES □ NO

PITTING □ YES □ NO

CONDITION SUMMARY (TYPE OF DAMAGE, LOCATION AND SIZE):

7.

STRUTS AND BEARING HOUSING

PERCENT BARE METAL:

STARBOARD

PORT

MAIN

INTERMEDIATE

PDR

CONDITION OF STRUT LEADING AND TRAILING EDGES: ______________________________________

CONDITION OF ROPE GUARDS: __________________________________________________

CONDITION OF FAIRWATERS: ___________________________________________________

8.

RUDDERS

□ NO DAMAGE

□ DAMAGE SHOWN ON ATTACHED DRAWINGS

STARBOARD

PORT

PERCENT BARE METAL

PDR

ACCESS PLATES INTACT?

□ YES □ NO

□ YES □ NO

WAS RUDDER SOUNDED?

□ YES □ NO

□ YES □ NO

ANY SIGNS OF FLOODING?

□ YES □ NO

□ YES □ NO

ANY SIGNS OF DROPPING?

□ YES □ NO

□ YES □ NO

CONDITION SUMMARY:

9.

PROPELLERS

□ NO DAMAGE □ DAMAGE SHOWN ON ATTACHED DRAWINGS

PROP #1:

NICKS __________

CURLS __________

CRACKS – LARGEST CRACK LENGTH __________ in.

PROP #2:

NICKS __________

CURLS __________

CRACKS – LARGEST CRACK LENGTH __________ in.

PROPELLERS NUMBERED STARBOARD TO PORT.

Diving Supervisor: ___________________________________________

Ship’s Engineer: _________________________________

FORM 4-3. PROPELLER VISUAL INSPECTION FORM

Pressure Face Suction Face

Contractor inspector (written/signature): /

USCG (written/signature): / form 4-4. port and starboard rudder inspection data