Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
-
[1]research packet 894-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-472-pc472-pkt-894-packet-md
-
[2]NavSource Online, Submarine Chaser Photo Archive, PC-472 (live URL verified 2026-10-03) [other_primary]
- Locator
- PC-472 timeline and specifications block
- Finding type
- vessel_history
- Finding
- NavSource documents this hull as laid down 1 July 1941 by Defoe Shipbuilding Co., Bay City, Michigan; launched 14 November 1941; commissioned USS PC-472 on 9 December 1941; assigned during World War II to the European theater in the Moroccan Sea Frontier and Mediterranean; transferred to France under Lend-Lease on 30 June 1944 at Casablanca and named Le Ruse (W 41); struck from the Navy Register 21 July 1959 and sold for scrap. Its specification block gives a 65-person complement, 173 feet 8 inches length, 23 feet beam, and twin General Motors 16-258S diesel engines on two shafts.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1959
- Population
- Defoe construction trades (1941); U.S. Navy crew (1941-1944); French Navy crew (1944-1959)
- Limitations
- Ship-specific history and specifications only; the page does not document asbestos, material content, exposure, abatement, or litigation. NavSource is an archival compilation, and its stated scrap disposition does not identify the final yard or date.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-472-pc472-01
-
[3]Dictionary of American Naval Fighting Ships, USS PC-472 (verbatim transcription; live URL verified 2026-10-03) [nhhc_danfs]
- Locator
- DANFS entry heading, specification block, and closing service paragraph
- Finding type
- vessel_history
- Finding
- The DANFS transcription identifies USS PC-472 as a 280-ton, 173-foot submarine chaser of the PC-461 class, laid down at Defoe Shipbuilding, Bay City, Michigan, on 1 July 1941; launched 14 November; and commissioned 9 December 1941. It states that the ship was loaned to France under Lend-Lease on 30 June 1944 and sold to France in March 1949, remaining in French service as Le Ruse until 1959.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1959
- Population
- Construction trades; U.S. Navy and French Navy crews
- Limitations
- The transcription documents history and basic specifications, not asbestos content, exposure, abatement, or litigation. The source is a mirror because the accessible NavSource page states no DANFS history is currently available for PC-472; the March 1949 sale date differs in precision from NavSource's undated March 1949 wording only in presentation, not substance.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-472-pc472-02
-
[4]National Archives, Special List No. 44, by Ship Numbers (live PDF verified 2026-10-03) [other_primary]
- Locator
- PDF p. 69, PC-472 row
- Finding type
- historical_record
- Finding
- The National Archives ship-number list records PC-472 with a commission date of 12/9/1941 and a final Navy logbook date of 6/30/1944, corroborating the commissioning date and the 30 June 1944 transfer/departure point used in the vessel record.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1944
- Population
- Navy ship logbook records
- Limitations
- This list is a logbook-record finding aid, not a service narrative or asbestos survey. The final logbook date does not independently establish decommissioning, French service details, or final disposition.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-472-pc472-03
-
[5]U.S. General Accounting Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979; report page live-indexed, direct automated PDF access returned 403) [gao]
- Locator
- GAO HRD-80-2, Navy response on shipboard asbestos applications, p. 1; GAO product page highlights
- Finding type
- asbestos_application
- Finding
- GAO reproduces Navy information that Navy ships used asbestos-containing materials in several applications; thermal insulation for machinery, equipment, and piping was the major application, with additional uses in electrical equipment, deck tile, piping-system gaskets and packing, and equipment brakes. PC-472's 1941 construction and 1941-44 Navy service fall within the historical Navy shipbuilding era addressed by this program context.
- Verification
- partial
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1979 context; report published 1979
- Population
- Navy shipbuilding, repair, and operating populations at program level
- Limitations
- Class/era and Navy-program context only. GAO does not name PC-472 and does not establish that any listed product was installed aboard this hull, or establish quantity, condition, individual exposure, causation, or present-day status. Direct PDF retrieval was blocked with HTTP 403; the report was verified through the live GAO product/search record and indexed report text.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-472-pc472-04
-
[6]Batch-7847 official-source sweep and required authenticated CourtListener helper searches; see search_ledger [other_primary]
- Locator
- search_ledger rows sl-uss-pc-472-pc472-01 through -06
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement contract, hazmat disclosure, or other primary material record for USS PC-472 was located in the sources searched. The four required CourtListener base requests were made through the authenticated helper for exact-name opinion, exact-name docket, hull-number opinion, and hull-number docket; each returned only an authenticated-request diagnostic and no usable result payload. Litigation status is therefore an access gap, not a negative result, and no litigation hit is classified or carried.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Limitations
- A negative public-source search does not prove absence of asbestos aboard or absence of litigation. No asbestos-qualified variants were run because no base-query overflow was available to establish the permitted condition; no anonymous or raw CourtListener request was made. Firecrawl was not usable because the keyless MCP reported a multi-hour quota retry interval.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-472-pc472-05