Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 915-packet.md (3 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-621-pc621-pkt-915-packet-md
-
[2]NavSource Online, PC-621, Submarine Chaser Photo Archive [other_primary]
- Locator
- PC-621 page, history and specifications sections
- Finding type
- vessel_history
- Finding
- The PC-621 page identifies this hull as a PC-461-class submarine chaser; gives laid-down date 4 March 1942 at Nashville Bridge Co., Nashville, Tennessee; launch date 22 May 1942; commissioning date 4 December 1942; European-theater operations; damage in collision with LST-345 on 10 July 1943 and by German aircraft off Anzio on 2 April 1944; decommissioning and transfer to France on 31 October 1944 as Fantassin (W 93), reclassification P-618, strike date 8 March 1961, and fate unknown. It also gives 173-foot-class specifications and two General Motors 16-258S diesel engines.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1961
- Population
- Construction personnel and U.S./French crews
- Limitations
- NavSource states that no DANFS history is available for PC-621. It documents vessel history and specifications, not asbestos content, an ACM survey, exposure, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-621-pc621-01
-
[3]National Archives, Special List No. 44, by Ship Numbers [other_primary]
- Locator
- PDF p. 71-72; PC-621 entry
- Finding type
- historical_record
- Finding
- The National Archives ship-number list includes PC-621 with a logbook coverage interval beginning 4 December 1942 and ending 31 October 1944.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1944
- Population
- U.S. Navy ship's company
- Limitations
- This is a finding aid and date-range list, not the logbook text. It corroborates the U.S. service interval but does not provide shipboard material, asbestos, exposure, or litigation evidence.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-621-pc621-02
-
[4]Naval History and Heritage Command, Action Report Western Naval Task Force: The Sicilian Campaign, Operation Husky [nhhc_danfs]
- Locator
- Execution/material and logistics sections; DIME Attack Force listing and PC 621 repair table
- Finding type
- historical_record
- Finding
- The official Navy action report lists PC 621 in the DIME Attack Force for the Sicilian operation and records that USS PC 621 was damaged in a collision and repaired at Oran.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943 Sicilian campaign
- Population
- U.S. Navy crew and repair personnel in the Mediterranean theater
- Limitations
- The report establishes operational participation and repair history, not asbestos presence, product identity, quantities, crew exposure, or causation.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-621-pc621-03
-
[5]U.S. Government Accountability Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 [gao]
- Locator
- GAO product page description and report metadata
- Finding type
- asbestos_application
- Finding
- GAO's Navy-wide worker-protection report provides era context that asbestos exposure was a Navy shipyard and shipboard occupational-health issue during the period covering PC-621's 1942-44 U.S. service. For this diesel-powered steel submarine chaser, period-typical applications may include machinery or exhaust insulation, gaskets, packing, electrical insulation, and compartment materials; these are not documented aboard PC-621.
- Verification
- partial
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- Navy asbestos program context, 1940s-1970s
- Population
- Navy shipyard and shipboard workers
- Limitations
- Program-level and era-level context only; it does not identify PC-621, its builder, its installed materials, or any individual exposure. The full GAO text was not retrieved in this session; the official product page is the cited live source.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-621-pc621-04
-
[6]NavSource Online, Submarine Chaser Photo Index, 173-foot steel-hulled PC overview [other_primary]
- Locator
- Submarine Chaser Photo Index, 173-foot Steel Hull overview
- Finding type
- asbestos_application
- Finding
- The class overview describes the World War II 173-foot PC type as steel-hulled and twin-diesel-propelled, with the PC-461 class built in multiple yard series. PC-621's ship-specific page identifies it as a member of that class. This supports diesel/machinery context but does not establish any asbestos-containing material aboard PC-621.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- World War II
- Population
- PC-461-class construction and operating personnel
- Limitations
- Class description is not a hull survey or material specification. No class-level asbestos schedule or quantity is asserted, and no boiler/turbine insulation is inferred for this diesel-powered hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-621-pc621-05
-
[7]Targeted source and litigation sweep completed; no qualifying ship-specific asbestos documentation located [other_primary]
- Locator
- BATCH-7996-REPORT.md research log and search ledger
- Finding type
- environmental_record
- Finding
- No ship-specific asbestos survey, abatement record, Navy material specification, or other qualifying primary record was located in the sources searched for USS PC-621. The absence is recorded as a research result, not proof that asbestos was absent.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-present
- Population
- PC-621 crew, construction, repair, and later custodial populations
- Limitations
- Negative finding is limited by the unavailable Firecrawl search service, unavailable full GAO text, and CourtListener fleet pacing stand-down after authenticated helper attempts; it does not establish absence of asbestos or absence of unindexed litigation.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-621-pc621-06