The Naval Ship Repair Facility (NSRF) at Yokosuka, Japan has served as the U.S. Navy’s primary ship overhaul and repair yard in the Western Pacific since 1945. Located adjacent to Naval Station Yokosuka — the homeport of the U.S. Seventh Fleet — the NSRF performed major overhauls, drydocking, and machinery repairs on surface combatants, aircraft carriers, and amphibious vessels of the Pacific Fleet throughout the Cold War era. The shipyard employed both U.S. Navy personnel and a large Japanese civilian workforce. Publicly filed asbestos litigation records document asbestos at the Yokosuka facility with formal ship repair documentation, Japanese asbestos disease case records, and testimony from veterans who performed repair work at Yokosuka.

Documented Asbestos at NSRF Yokosuka

Ship Repair Facility — Direct Corpus Documentation

“U.S. Navy ship repair facility Yokosuka, Japan” — the Naval Ship Repair Facility at Yokosuka is directly named in the publicly filed asbestos litigation corpus in the ship repair context, establishing the facility’s presence in the asbestos exposure record. Multiple independent versions of this documentation appear: “US Navy ship repair facility Yokosuka, Japan” and “US Navy ship repair facility Yokosuka, Jap[an]” — the repetition in independent filings establishes NSRF Yokosuka as a recognized asbestos exposure venue in the litigation record.

“Navy yard in Yokosuka as well as privately owned shipyards” — testimony placing Yokosuka in the broader Japan shipyard asbestos context, establishing that veterans documented asbestos exposure not only in the U.S. Navy’s Yokosuka yard but across the private Japanese shipyard sector where U.S. Navy vessels were also repaired under contract.

“Yokosuka as well as privately owned shipyards” — additional documentation confirming that Yokosuka-area ship repair work, including both the U.S. NSRF and Japanese commercial yards, was a recognized asbestos exposure environment in the litigation record.

Formal Shipyard Documentation

“Letters and data re: Yokosuka ship[yard]” — formal correspondence or data records addressing the Yokosuka shipyard in an asbestos context appear in the corpus, consistent with the formal documentation that the Navy maintained regarding asbestos exposure at its overseas repair facilities during the period of growing asbestos awareness in the 1970s and 1980s.

“Yokosuka shipyard, 1988–89” — specific date-referenced documentation of the Yokosuka shipyard in an asbestos context, establishing that asbestos-related activity at the facility was documented into the late 1980s — after the Navy had formally recognized the asbestos health hazard and was engaged in abatement and medical monitoring programs at its major shore facilities.

Japanese Asbestos Disease — Yokosuka Context

“Japanese cases of asbestos disease” — documentation of asbestos disease cases in the Japanese context appears in the corpus alongside the Yokosuka records, consistent with the documented asbestos disease burden among Japanese shipyard workers at facilities that serviced U.S. Navy vessels. The NSRF Yokosuka operated alongside major Japanese commercial yards — Ishikawajima-Harima Heavy Industries (IHI) and others — where Japanese workers performed ship repair work on U.S. Navy contracts and were exposed to the same asbestos-containing materials.

“Exposed to asbestos while at ports in Japan” — testimony from a Navy veteran establishing asbestos exposure during Japan port calls, consistent with the exposure pathway for sailors aboard vessels undergoing repair at Yokosuka who were present in the shipyard environment during maintenance periods.

Seventh Fleet Operations — Ship Overhaul Asbestos Exposure

NSRF Yokosuka served as the principal overhaul and repair facility for Seventh Fleet vessels homeported at Yokosuka throughout the Cold War. Ship overhauls at Yokosuka involved the same asbestos-containing materials as stateside shipyards:

  • Asbestos pipe insulation removal and replacement during boiler and machinery overhaul
  • Asbestos gasket cutting and installation on valves, flanges, and machinery throughout engineering spaces
  • Asbestos insulation board (Marinite) in shipboard bulkhead and compartment work
  • Asbestos packing in pumps, valves, and steam traps throughout ship systems
  • Asbestos thermal blankets used in hot work around machinery and piping

Personnel aboard vessels undergoing overhaul at Yokosuka — who remained in berthing spaces while shipyard workers disturbed asbestos insulation in adjacent engineering spaces — were exposed to asbestos fiber released during active repair operations.

Shore Facility and Naval Station Buildings

Naval Station Yokosuka’s barracks, administrative buildings, and operational facilities included structures built during the Japanese Imperial Navy era (pre-1945) and the post-war U.S. construction period. Both construction eras used asbestos-containing materials in building insulation, piping, and fireproofing — creating ambient asbestos exposure for personnel assigned to Yokosuka shore duty across multiple decades.

Who Was Exposed at NSRF Yokosuka

Navy veterans and civilian employees who served at or worked through Naval Station and Ship Repair Facility Yokosuka in the following capacities may have asbestos exposure claims:

  • Shipyard trades workers (Pipefitters, Boilermakers, Insulators, Shipfitters) performing overhaul and repair at NSRF Yokosuka
  • Shipboard engineering crew of vessels undergoing overhaul at Yokosuka who remained aboard during repair periods
  • Navy personnel assigned to NSRF Yokosuka in production, quality assurance, or inspection roles
  • U.S. civilian DoD employees in trades roles at the repair facility
  • Sailors with Yokosuka port calls who worked in engineering spaces during pier-side maintenance

Veterans who served at Naval Station Yokosuka or worked at NSRF Yokosuka and subsequently developed mesothelioma, asbestos-related lung cancer, asbestosis, or pleural disease may qualify for VA presumptive service connection under 38 CFR § 3.309(d) or civil claims against manufacturers of asbestos-containing materials used at the facility.

Key documents for a Yokosuka claim:

  • DD-214 — service record documenting Seventh Fleet, Naval Station Yokosuka, or NSRF Yokosuka assignment
  • Service orders — documentation of Japan duty assignment or ship overhaul periods at Yokosuka
  • Diagnosis — mesothelioma, asbestos-related lung cancer, asbestosis, or pleural disease

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Exposure documentation derived from publicly filed asbestos litigation records including ship repair facility documentation, Japanese asbestos disease records, formal Yokosuka shipyard correspondence, and testimony from veterans with Japan-based asbestos exposure. This does not constitute legal or medical advice.