US Navy repair ships — the Vulcan class (AR-5 through AR-8) and later repair ships — provided comprehensive machinery, hull, and electronics repair services to Pacific and Atlantic Fleet units throughout the WWII and Cold War eras. Ships including USS Vulcan (AR-5), USS Ajax (AR-6), USS Hector (AR-7), and USS Jason (AR-8) served as mobile repair facilities with machine shops, foundry spaces, boiler shops, electrical shops, and complete repair capability, supporting fleet operations at forward bases and homeport maintenance activities. The repair ship class combined the workshop capability of a shipyard with the mobility of a Navy vessel.

Repair Ship Workshop Environment and Asbestos

Repair ship crew members worked in extensive workshop spaces with asbestos:

  • Machine shop and fabrication spaces — the repair ship’s machine shops occupied extensive below-deck spaces where Machinist’s Mates fabricated replacement parts for fleet units, using grinding and machining equipment in an environment with asbestos insulation on the shop overhead, structural members, and mechanical systems serving the below-deck workshop spaces
  • Foundry operations — Vulcan class repair ships maintained foundry facilities for casting metal replacement parts. Foundry operations used asbestos-containing foundry materials — asbestos board, asbestos blanket, and asbestos refractory materials — as standard foundry supplies for heat containment and mold insulation
  • Boiler shop — boiler shop personnel fabricating and repairing boiler tube assemblies, boiler fittings, and boiler hardware for fleet units worked with asbestos refractory and insulation materials in the boiler shop environment
  • Pipe shop — pipe shop personnel fabricating replacement piping and fittings for fleet units worked with asbestos pipe covering material and asbestos gasket sheet stock as standard pipe shop supplies for steam system repair parts fabrication

Maintenance Aboard Fleet Units

Like destroyer tenders, repair ship crew members regularly boarded fleet units moored alongside for in-situ repair work:

  • Engineering space access — MMs and HTs going aboard cruisers, destroyers, carriers, and auxiliary ships for machinery repair and hull maintenance worked in the engineering spaces of those fleet units — asbestos-insulated firerooms, engine rooms, and auxiliary machinery spaces of ships built before the mid-1970s asbestos phase-down
  • Boiler and steam plant repair — boiler tube rolling, steam fitting repair, and valve overhaul aboard deployed fleet units brought repair ship personnel into the fireroom environment of steam-powered surface combatants

VA Claims for Repair Ship Veterans

VA presumptive service connection under 38 CFR § 3.309(d) covers asbestos exposure aboard Navy auxiliary vessels. Engineering ratings and hull ratings who served aboard Navy repair ships in workshop, foundry, boiler shop, or maintenance billets — including those performing maintenance aboard fleet units — and have since been diagnosed with mesothelioma, asbestosis, or asbestos-related lung cancer may qualify for VA disability benefits.

Product & Manufacturer Reference

The asbestos-containing products documented on U.S. Navy vessels and at shipyards are catalogued by manufacturer on AsbestosIndex. These records cross-reference which companies supplied which materials and to which facilities.

Pipe Covering & Block Insulation Thermal insulation applied to steam lines, valves, and equipment in engine rooms and fire rooms Marine Products Insulation, gaskets, and packing products specified for naval and commercial marine applications Boilers & Steam Equipment Boiler manufacturers and insulation products — central to the fire room exposure pathway Gaskets & Packing Sheet and ring gaskets used throughout piping flanges, valve bonnets, and pump housings Electrical Products Wire insulation, switchgear arc chutes, and panel liners used throughout electrical spaces Full Product Index Search all 200+ manufacturers and 1,500+ documented asbestos products on AsbestosIndex™

Navy Ratings Most Exposed to Asbestos Aboard Repair Ships (AR)

The U.S. Department of Veterans Affairs and the public asbestos litigation record document that the following Navy ratings worked routinely in spaces where ACM was installed, maintained, ripped out, and replaced:

VA Presumptive Benefits — No Filing Deadline

The U.S. Department of Veterans Affairs recognizes mesothelioma, asbestos-related lung cancer, asbestosis, and pleural disease as conditions presumed to be service-connected for Navy veterans with documented asbestos exposure under 38 CFR § 3.309(d). No statute of limitations applies to VA disability compensation claims.

Available benefits may include monthly disability compensation, Dependency & Indemnity Compensation (DIC) for surviving spouses, priority VA healthcare enrollment, and Special Monthly Compensation for severe cases. Parallel claims against the asbestos bankruptcy trust funds established by the manufacturers of these products do not reduce VA compensation.

How to file a VA disability claim: VA claims are filed directly with the U.S. Department of Veterans Affairs — not with a law firm. Start at VA.gov › Hazardous Materials Exposure, call 1‑800‑827‑1000, or get free help filing from a Veterans Service Organization: DAV, VFW, or American Legion.

VA Claims Guide on This Site › Compare: VA vs. Civil Lawsuit

Source notes: equipment-manifest entries (where shown) are sourced from public-record BUSHIPS (Bureau of Ships) documentation, NARA archives, and the public asbestos litigation record. Manufacturer attributions link to documented asbestos-product histories on AsbestosIndex.com where available. Nothing on this page constitutes medical or legal advice.