7 January 2026

M/V Thunderbird 2025 Shipyard Period: Technical Specifications

Introduction

This work package details the scope of work to be completed during the 2026 Shipyard Period for the Washington State Parks & Recreation Commission’s Vessel M/V Thunderbird. Contractor shall furnish all material, labor, and equipment required for completion of the Work Packages except for material, labor, and equipment specifically stated as being furnished by the Owner and/or installed by another contractor employed by the owner. Material and equipment shall be commercial grade, suitable for marine service, and installed consistent with good marine practice for the Vessel’s present classification.

These requirements are not intended to include every detail of construction and equipment, and the omission of such will not relieve Contractor of its obligation to furnish, without extra cost, all items of the requirements and drawings which are implied or necessary to complete the Work Package.

The Contractor will be required, without extra cost, to temporarily remove, reinstall, and ensure proper operation of the vessel’s equipment in order to complete elements of the Work Package.

The Technical Requirements are flexible in certain areas. The Owner and Contractor shall reach agreement to assure compatibility of design and construction methodology.

General Requirements

The Contractor shall include in their bid price for this work package only the work items listed herein. Discovery work and work resulting from inspections shall be priced as lot work.

The Contractor shall include removal and reinstallation of insulation, piping, HVAC components, electrical cables, and incidental interferences in way of all work identified for these work packages. Upon completing the work, the Contractor shall clean the work area and its surfaces of all work debris and recoat existing coated surfaces damaged by welding and other hotwork in accordance with Shipyard Specification and this section.

All temporary openings and removals necessary to facilitate the work identified for these packages shall be bid and carried out as part of this work package. All temporary openings and removals shall be reinstalled and restored to original condition. All affected mechanical and electrical components shall be tested to the Owner’s satisfaction after reinstallation.

After the work items listed herein have been completed, the end result of this work package shall be fully functional equipment meeting all applicable US Coast Guard (USCG) requirements. The Contractor shall be responsible for all removals, inspections, modifications, installations, and testing as described below and in the Shipyard Specification. All fees for these services shall be the responsibility of the Contractor and shall be included in the bid.

The Shipyard Specification contains general technical and quality of work requirements relevant to the work identified for this package, including Contractor responsibilities for providing, arranging, integrating, testing, and commissioning all required work. The requirements included in the Shipyard Specification shall be applied to all aspects of this work. The requirements described herein shall be considered as additional to the requirements of the Shipyard Specification.

Unless otherwise noted, all equipment and material permanently removed from the vessel shall become the property of the Contractor.

Base Bid Items: Work Packages 1-5

WP 1 Drydock and Refloat Vessel

Description: Drydock the Vessel and prepare to accomplish Work Packages requiring the Vessel to be out of the water.

Vessel dimensions are 75’ x 20’6”; weight is approximately 92 tons.

Work to be completed by Contractor:

• Drydock the Vessel upon delivery by Owner.

• Contractor shall ensure blocks or other weight bearing apparatus are properly placed and do not damage the

Vessel or any attachments to the Vessel.

• Contractor shall exercise due diligence in protecting the Vessel's transducers, propeller shaft, propeller, rudders, and rudder supports.

• Upon completion of all Work Packages, ensure all sea valves, through-hulls, and other watertight fixtures are properly closed to ensure watertight integrity of the Vessel.

• Undock the Vessel when all work is completed at a mutually agreed time between Contractor and Owner

Representative. Owner representative must be present at time of undocking.

• Protect underwater transducers to prevent damage or overspray while Vessel is out of the water.

• Provide shore power continuously throughout work to ensure operation of well-deck bilge pump or provide alternative bilge box pump.

WP 1.1 High-Pressure Wash Underwater Hull

• Within 12 hours of drydocking the Vessel, Contractor shall complete a high-pressure wash of the underwater hull to remove any marine growth.

Figure 1- MV Thunderbird Current Condition 1/8/26

Figure 2- MV Thunderbird Last Haul Out & Bottom Paint, March 2026

WP 2 Surface Preparation

• Description: Prepare damaged steel surfaces for inspection, potential steel renewal, and recoating. All surface preparation shall be completed as specified in MV Thunderbird 2026 Shipyard Period: Shipyard Specification, section 631

Work to be completed:

• Exterior Coating Repairs: Wash, blast or needle scale, and clean damaged exterior steel surfaces including but not limited to hull, bin walls, bow gate, and rails. Vessel bottom was painted in March, 2025. All other surfaces were last coated in 2022. Examples shown below are representative of the damaged coatings to be repaired but are not inclusive of required work.

Figure 3- Current Paint Condition 1/8/25

Figure 4- Hawse pipe & port locker top

Figure 4- Port locker deck top

Figure 5- Bin wall condition

Figure 6- Bow landing door

• Deck top: Wash, blast, and clean entirety of deck top around house 150 sq. ft.:

Figure 7- Deck top

Figure 8- Deck top aft

• Engine room: wash, needle scale, and clean damaged coatings

Figure 9- Engine room coating repair

• Port bow locker: wash, needle scale, and clean damaged coatings

Figure 10- Port bow locker coating repair

WP 3 Structure Renewal

Description: Following preparation and cleaning of damaged steel surfaces, and upon the results of Owner-initiated thickness gauging, the Contractor will crop and replace steel where excessive wastage has occurred. These locations include portions of railings, deck fittings, door flanges, and engine exhaust stack. Additional found work may result in additional renewal needs to be paid at Unit Pricing rates.

Work to be completed:

• Engine room hull plate: Crop and replace pitted portion of ¼” hull plate in engine room, approximately 36” x 36”

Figure 11- Hull plate with pitting

• Remove deck fill: Crop and weld new ¼” steel plate at wasted unused deck fitting

Figure 12- Crop and cap fill tube

• Repair engine room door flange: Crop and replace wasted portion of engine room door flange

Figure 13- Engine room door repairs

Figure 14- Engine room door repairs

• Port exhaust repair: Remove leaking port exhaust cap flange, replace main engine exhaust pipe as needed, crop abandoned generator exhaust pile, and repair cap flange

Figure 15- Port Exhaust and Cap Flange

Figure 16- Port Exhaust Pipe Flange

• Starboard exhaust repair: Remove leaking starboard exhaust cap flange, replace main engine exhaust pipe as needed, and repair cap flange

Figure 17- Starboard Exhaust Pile Flange

• Deck drain repair: Crop and replace wasted deck drain pipe

Figure 18- Wasted drain pipe

• Hawse pipe repair: Crop and replace wasted portions of the hawse pipe in the port bow locker

Figure 19- Hawse pipe section loss

WP 4 Coating Application

Description: Following completion of required surface preparation and structure renewal, bare steel and aluminum surfaces shall be recoated with paint per MV Thunderbird 2026 Shipyard Period: Shipyard Specification, section 631. The Contractor may choose an alternative paint vendor but will need prior approval of Owner representative.

Work to be completed:

• Paint any prepared steel and aluminum surfaces as specified in MV Thunderbird 2026 Shipyard Period: Shipyard Specification, section 631

Lot Unit Pricing

Lot Unit Pricing

UP1 – Steel Renewal

The Contractor shall provide a separate price to cut out and replace deck, stiffeners and attached structure (including all surface preparation) in any interior space. The lot price shall include structural fairness and alignment inspections and quality assurance checks of structural fabrications. The lot price does not include removing and reinstalling interferences in way of this lot item, such as: electrical fixtures and cabling, plumbing fixtures, piping, surface preparation, painting, ventilation, insulation, and ceilings/joiner work. Quantity adjustments shall be prorated on a per-100 square-foot basis beyond work specified in the base bid items.

UP2- Piping and Pipe Insulation

The Contractor shall provide a separate price to renew and insulate, with non-ACM materials, piping not covered in the baseline scope of work.

The Contractor shall provide a separate price to renew piping for each of the following nominal pipe sizes, and materials including the cost of the pipe unions/fittings, hangers, and fit-up, but excluding the cost of valves and valve mating flanges/fittings for each of the following nominal pipe sizes. Quantity adjustments shall be prorated on a per-25 lineal-foot basis.

Item No. Pipe Size Schedule Material # Fittings Price per 25 lineal feet UP2.1 <2” 40 Steel 4 UP2.2 4” 40 Steel 2 UP2.3 6” 40 Steel 2 UP2.4 <2” 80 Steel 4 UP2.5 4” 80 Steel 2 UP2.6 6” 80 Steel 2 UP2.7 <2” 40 Stainless Steel 4 UP2.8 4 40 Stainless Steel 2 UP2.9 6 40 Stainless Steel 2

The Contractor shall provide a separate price to provide and install fibrous glass thermal pipe insulation, lining, and adhesive for each of the following nominal pipe sizes: less than 2"; 2" and up to 4"; 4" and up to 6". Quantity adjustments shall be prorated on a per-25 lineal-foot basis.

Item No. Pipe Insulation Size Price per 25 lineal feet

UP2.10 <2”

UP2.11 2”-<4”

UP2.12 4”-6”

UP3- Moorage and Temporary Services

The Contractor shall provide a per-day cost for the vessel to moor at the Contractor’s facility.

UP4- Additional Lay-day on the Drydock

The Contractor shall provide a per-day cost of each additional lay-day on the drydock, should additional work delay the undocking. This cost shall include all services provided to the vessel, e.g. water, electrical, security.

UP5- General Services

Item No. Classification Per hour cost UP5.1 Steelwork UP5.2 Welding UP5.3 Pipefitting UP5.4 Electrical UP5.5 Painting UP5.6 Joinery UP5.7 Rigging UP5.8 Marine Chemist UP5.9 Firewatch UP5.10 Other: