Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]research packet 912-packet.md (4 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-595-pc595-pkt-912-packet-md
-
[2]NavSource Online, Submarine Chaser Photo Archive, PC-595 (live page verified 2026-10-03) [other_primary]
- Locator
- PC-595 page: class/milestone block and specifications block
- Finding type
- vessel_history
- Finding
- The ship-specific page reports that PC-595 was laid down 19 May 1942 by Dravo Corporation at Neville Island, Pittsburgh, Pennsylvania; launched 9 October 1942; commissioned 30 April 1943 at Algiers Naval Station, New Orleans; struck from the Naval Register 25 February 1946; transferred to the Republic of China 30 June 1948; and has fate unknown. It gives a 450-ton displacement, 173 ft 8 in length, 23 ft beam, 10 ft 10 in draft, 20.2-knot speed, complement 65, and two 1,440-bhp Hooven-Owens-Rentschler R-99DA diesel engines with Westinghouse single-reduction gear and two shafts.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Dravo construction trades (1942-43); U.S. Navy crew (1943-46); Republic of China custody after 1948
- Limitations
- Ship-specific identity and milestone compilation, but NavSource is a volunteer photographic-history archive rather than a Navy material survey. It states that no DANFS history is currently available for PC-595. The page does not document asbestos, hazardous materials, maintenance, abatement, or exposure, and it does not give an exact decommissioning date.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-595-pc595-01
-
[3]Ships of the U.S. Navy, 1940-1945, Submarine Chasers (official Navy tabulation, HyperWar transcription; live page verified 2026-10-03) [other_primary]
- Locator
- Submarine Chasers page, PC-461 Class specification block and hull list
- Finding type
- historical_record
- Finding
- The official Navy tabulation places PC-595 in the PC-461 class. The class block gives 284 tons, 173 ft 8 in length, 23 ft beam, 10 ft 10 in draft, 21 knots, complement 65, diesel engines, two screws, and 2,280 shaft horsepower; the hull list places PC-592-599 in the 1942-44 commission group. This corroborates the class identity and diesel/twin-screw configuration for PC-595.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- PC-461-class construction trades and crews; PC-595 context
- Limitations
- The class block is not a measured PC-595 specification and differs modestly from the ship-specific NavSource figures. It contains no asbestos or materials finding for PC-595 and cannot establish that any class-typical product was installed aboard this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-595-pc595-02
-
[4]National Archives, Special List #44, by Ship Numbers (ship logbook index PDF) [other_primary]
- Locator
- PDF p. 71, row PC-595
- Finding type
- historical_record
- Finding
- NARA's ship-number logbook index lists PC-595 with deck-log coverage from 1 June 1943 through 28 February 1945. The entry identifies an archival lead spanning the first part of the hull's commissioned service.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-06-01 to 1945-02-28
- Population
- PC-595 crew and ship operations during indexed coverage
- Limitations
- This is an index, not the deck-log content. It does not identify crew, voyages, repairs, materials, asbestos, or exposure. The underlying logs were not retrieved or page-read for this record.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-595-pc595-03
-
[5]U.S. General Accounting Office, Navy's Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979; official PDF verified through GAO search result) [gao]
- Locator
- GAO report summary and section 'Navy's Policy on Use of Asbestos'
- Finding type
- asbestos_application
- Finding
- GAO reports that, according to the Navy, all ships contained some asbestos in components such as clutches and electric cables, and that thermal insulation was the Navy's major shipboard asbestos use. GAO also reports that the Navy issued a policy in October 1975 to eliminate asbestos where suitable alternatives had been designated. This supplies Navy-wide context for a 1942-built ship, not a PC-595 material finding.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1948 construction/service context; GAO review 1979
- Population
- Navy ships and shipyard workers in the GAO review; era context for PC-595
- Limitations
- Program-level evidence from a review of Long Beach and Norfolk Naval Shipyards; it does not name PC-595, identify its installed materials, establish asbestos content in any component aboard this hull, quantify material, or prove exposure. The GAO product page was live, while the PDF content was verified via GAO's indexed official result.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-595-pc595-04
-
[6]National Archives, Researching Asbestos aboard US Naval Vessel up through 1961 (official research guide; live page verified 2026-10-03) [other_primary]
- Locator
- Guide sections 'Beginning Research' and 'Specification Files'
- Finding type
- historical_record
- Finding
- NARA's research guide identifies Navy inspection, specification, correspondence, and related archival series as research routes for ship-specific asbestos work, but states that the listed series do not themselves provide direct evidence of asbestos use or presence in Navy ships or components. The guide supports further archival research for PC-595, including ship-specific records and component specifications.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Study period
- 1942-1961 records; guide accessed 2026-10-03
- Population
- Researchers of U.S. naval vessels through 1961
- Limitations
- Research guidance only; it is not evidence that asbestos was aboard PC-595. No PC-595-specific survey, material specification, inspection report, or abatement record was retrieved in this pass.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-595-pc595-05
-
[7]Authenticated CourtListener API v4 search sweep via cl-auth-search.py: exact-name opinion and docket queries for 'USS PC-595', plus hull-number opinion and docket queries for 'PC-595' [court_record]
- Locator
- Authenticated helper requests on 2026-10-03; four base-query slots logged in search_ledger
- Finding type
- historical_record
- Finding
- The four required authenticated CourtListener base queries returned no qualifying asbestos-litigation hit for USS PC-595 / PC-595: exact-name opinion, exact-name docket, hull-number opinion, and hull-number docket. No asbestos-qualified variant was run because no base query overflowed its 20-result page.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- CourtListener records available through 2026-10-03
- Population
- CourtListener opinions and RECAP dockets indexed under the queried names
- Limitations
- A bounded index-search negative, not proof that no litigation record exists. Search results were classified as no qualifying hit; the sweep does not exclude unindexed pleadings, non-public filings, alternate vessel descriptions, or records outside CourtListener. No merits inference follows.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-595-pc595-06
-
[8]Bounded source review and search ledger for PC-595 [other_primary]
- Locator
- Search ledger rows sl-uss-pc-595-pc595-01 through -10
- Finding type
- asbestos_application
- Finding
- No ship-specific asbestos survey, material specification, product identification, abatement record, hazardous-material disclosure, or verified asbestos exposure record for PC-595 was located in the authoritative sources reviewed. PC-595 therefore remains Tier 2 based on class/era context only; asbestos aboard this hull is unknown.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- PC-595 construction trades, Navy crew, and transfer/disposal personnel
- Limitations
- A bounded negative finding, not proof that no such record exists. NARA deck logs, Navy construction and repair files, Dravo yard records, Republic of China transfer records, and any non-indexed litigation materials remain open archival leads. The Firecrawl MCP was unavailable because its keyless quota was exhausted with an approximately 23-hour retry window; direct authoritative pages and the permitted fallback sources were used instead.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-595-pc595-07