BOST_Maritime_Services_SOW_1.pdf

United States Department of the Interior

National Park Service Boston National Historic Site

21 2nd Ave Boston, MA 0229

STATEMENT OF WORK

BOST Maritime Services

1.0 GENERAL INFORMATION

1.1 Background - Boston National Historical Park (BNHP) manages historic maritime assets and waterfront infrastructure within the Charlestown Navy Yard. These assets include museum vessels, floating structures, piers, and public access systems that require specialized maritime services to ensure safe operation, preservation of historic fabric, and continued visitor access.

Primary assets addressed under this contract include:

1. USS Cassin Young

2. A historic caisson located at Pier 2

3. A modern barge moored at the end of Pier 1

4. Waterfront areas adjacent to USS Constitution

This contract provides a coordinated suite of maritime services supporting vessel mooring, underwater inspection, fuel tank cleaning and certification, marine debris removal, and repair of public access systems.

1.2 Scope

The Contractor shall furnish all labor, supervision, equipment, materials, transportation, disposal, and incidentals necessary to perform the services described herein.

All work shall be performed in compliance with applicable federal, state, and local laws and regulations and shall be coordinated through the Government’s Contracting Officer’s Representative (COR).

1.3 Period of Performance and Work Hours

• Unless otherwise authorized in writing:

• Work shall be performed Monday through Friday

• Between 7:00 a.m. and 4:30 p.m.

• No vessel movement is authorized unless directed by the Government

1.4 Coordination and Security

• All work shall be scheduled and coordinated through the COR.

• Site access is subject to Navy security requirements.

• Contractors shall provide advance notice of equipment, operators, and schedule sufficient for NPS and Navy review and approval.

• Temporary staging and laydown space is available near the end of Pier 1 and shall be coordinated in advance with the COR.

2.0 CLIN 010 – LINE HANDLING SERVICES (BASE)

2.1 Scope: The Contractor shall provide inspection and adjustment of existing mooring lines for:

• USS Cassin Young

• Historic caisson at Pier 2

2.2 Service Frequency

• Six (6) scheduled service visits annually. Service will be scheduled on an every-other-month basis.

• Two (2) pre-storm service visits annually with minimum 48-hour notice. COR shall notify contractor when service is required in advance of a storm.

2.3 Requirements

• Visual inspection and hands-on adjustment of all existing mooring lines

• Equalization of loads and correction of lead angles

• Mitigation of chafe conditions

• Compliance with Government-furnished line handling drawings

• Line replacement and hardware modification is not included. Should line replacement be required, it shall be addressed as a modification.

2.4 Deliverables

• A brief report shall be submitted after each visit documenting:

• Date of service

• Adjustments made

• Observed conditions

3.0 CLIN 020 –UNDERWATER HULL CLEANING AND INSPECTION (Option 1)

3.1 Scope - The Contractor shall perform diver-conducted underwater hull cleaning and inspection for:

• USS Cassin Young (376’ length, 39’ beam, approximately 13’ draft)

• One modern barge at the end of Pier 1 (110’ length, approx. 40’ wide)

3.2 Requirements

• Non-abrasive cleaning sufficient for inspection.

• Visual and tactile examination of hull surfaces and appendages.

• Photographic documentation where feasible.

• UT testing is not included under this CLIN.

3.3 Deliverables - A written inspection report summarizing:

• Observed conditions

• Areas of deterioration

• Cleaning performed

4.0 CLIN 030 – FUEL TANK CLEANING AND GAS-FREE CERTIFICATION (Option 2)

4.1 Scope - The Contractor shall perform final cleaning and gas-free certification of one (1) fuel tank aboard USS Cassin Young. Tank capacity is approximately 7,011 gallons when full and varies in depth with a majority of the space only having between 3’ and 4’ of height available. The access hatch is only about 12” x 16”. Tank has been previously pumped out but some fuel does remain and walls of the tank need to be fully cleaned. The tank previously held heating fuel.

4.2 Requirements

• Confined space preparation and ventilation. Provide NPS with a confined space safety and work plan in advance of any cleaning work. All work shall be conducted in compliance with OSHA confined space regulations.

• Removal of residual sludge or deposits from all surfaces within the tank.

• Atmospheric testing shall be conducted during the work and at the conclusion to verify all remnants of fuel have been removed.

• Gas-free certification by certified Inspector.

4.3 Deliverables

• Cleaning summary

• Atmospheric testing results

• Gas-free certificate

Unfamiliarity with the size or configuration of the tank due to missed pre-bid site visit will not be a reason for reconsideration of costs.

5.0 CLIN 040 – REMOVAL AND OFF-SITE DISPOSAL OF ABANDONED MARINE MATERIALS (Option 3)

5.1 Scope - The Contractor shall remove and dispose of the following materials located adjacent to USS Constitution at Pier 1:

• Four (4) camels.

• Two (2) 50-foot dock sections.

• Approximately 200 feet of spill boom.

• Any other floating material found adjacent to the USS Constitution (see photo for area within scope).

5.2 Requirements

• Assess buoyancy and weight

• Safely remove materials from water.

• Prevent environmental contamination.

• Transport and lawfully dispose off site.

• Contractor shall be responsible for waste manifests and disposal documentation.

5.3 Differing Conditions

If additional materials are discovered during cleanup that were not visible prior to the commencement of work, Contractor shall notify COR and request further direction.

6.0 CLIN 050 – REPAIR, MODIFICATION, AND INSTALLATION OF GOVERNMENT-FURNISHED BROW AND GANGWAY (Option 4)

6.1 Scope - The Contractor shall inspect, repair, modify as necessary, and reinstall an existing aluminum pier brow and aluminum gangway providing visitor access to USS Cassin Young.

• Approximate gangway dimensions: 25’ long by 5’ wide

• Equipment currently installed and in use

• Aluminum brow located near the aft of USS Cassin Young and currently out of service.

6.2 Requirements

• Inspect structural conditions.

• Repair or replace worn components.

• Replace rollers, bearings, or walking surfaces as needed.

• Modify ship-side attachment details for both the ship and the gangway to minimize deck wear.

• Remove wooden brow for NPS to disassemble and dispose.

• Move NPS owned aluminum brow to the location of the current brow.

• Reinstall gangway with “flipped” configuration so gangway anchor points are connected to the ship and roller/ramp components are oriented onto the brow.

• Ensure proper tidal accommodation

System shall support approximately 50,000 visitors annually and be configured to be as accessible as practicable given historic vessel constraints.

6.3 Deliverables

• Inspection and repair summary

• Product cut sheets for any new equipment installed.

7.0 CLIN 060 – TARGETED ULTRASONIC THICKNESS (UT) TESTING (Option 5)

7.1 Scope - The Contractor shall perform targeted ultrasonic thickness testing of the exterior hull of the USS Cassin Young by a certified diver following hull cleaning. All work shall be under the direction of a certified marine surveyor.

7.2 Requirements

• Propose UT locations based on observed deterioration.

• Obtain COR approval and acceptance of testing locations prior to testing.

• Perform up to 100 UT readings.

• Use qualified and certified personnel and calibrated equipment.

• UT testing is for condition monitoring only and does not constitute structural certification.

7.3 Deliverables

• UT inspection report

• Annotated hull drawings showing test locations and readings. Copies of historic drawings of the hull will be provided by the COR to assist with creation of inspection report.

• Summary of notable thinning

8.0 ENVIRONMENTAL AND SAFETY

• Environmental permits are not anticipated.

• Contractor is responsible for compliance with applicable laws and regulations.

• Contractor shall manage waste handling and provide disposal documentation.

• Spill containment and turbidity controls are discretionary and based on Contractor means and methods.

9.0 ACCEPTANCE

Work shall be considered acceptable when:

• Services are performed in accordance with this Statement of Work

• Required deliverables are submitted

• COR determines performance objectives have been met

10.0 EXCLUSIONS

Unless specifically authorized, this contract excludes:

• Structural vessel repairs

• Pier reconstruction

• Fabrication of new access systems

• Environmental remediation beyond incidental cleanup

• Work exceeding defined UT reading limits

United States Department of the Interior