Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 876-packet.md (2 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED with thin sourcing (existence and class membership confirmed from index/list sources; no hull-specific chronology or fate located in this pass).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Limitations
- qualifier: VERIFIED with thin sourcing (existence and class membership confirmed from index/list sources; no hull-specific chronology or fate located in this pass).
- Evidence ID
- uss-pc-1258-pc1258-pkt-876-packet-md
-
[2]NavSource Online, Submarine Chaser Photo Archive, PC-1258 [other_primary]
- Locator
- PC-1258 hull page, history paragraph and specifications block
- Finding type
- vessel_history
- Finding
- The live PC-1258 hull page identifies this vessel as a PC-461-class submarine chaser: laid down 28 December 1943 by Luders Marine Construction Co., Stamford, Connecticut; launched 23 September 1944; commissioned USS PC-1258 on 24 January 1945; assigned to the Asiatic-Pacific theater and participated in the Palau Islands operation; struck from the Naval Register 12 April 1946; transferred to the War Shipping Administration 21 June 1948 and sold to Wilson Excursion Line; named Boston Belle in 1949; sold to the City of Rosario, Argentina, in 1961; sold in 1970 to Ferrylineas S.A. and renamed Cuidad de Rosario; laid up near Buenos Aires after 1982; destroyed in 2007. The page lists 450-ton displacement, 173 feet 8 inches length, 23-foot beam, 10-foot 10-inch draft, 20.2-knot speed, complement 65, and two 1,440-bhp Hooven-Owen-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
- 1943-2007
- Population
- Luders construction trades; U.S. Navy crew; War Shipping Administration and later commercial/Argentine crews
- Limitations
- NavSource is a naval-history photo/archive compilation rather than a Navy-issued DANFS or NVR record. It documents construction, service, specifications, and reported disposition, but contains no asbestos, materials, exposure, or abatement information. It does not provide a separate decommissioning date or a source for the 2007 destruction detail beyond the page narrative.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1258-pc1258-01
-
[3]National Archives, Special List 44, by Ship Numbers [other_primary]
- Locator
- Special List 44, by-ship-number table, PC-1258 row
- Finding type
- historical_record
- Finding
- NARA's official Special List 44 lists PC-1258 with a 1/24/1945 date and a 6/30/1945 date in the Navy deck-log finding aid. The first date matches NavSource's commissioning date and provides an official archival cross-check for the commissioning-era identity; the list is a finding aid, not a ship history or asbestos record.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945 archival finding-aid entries
- Population
- Navy deck-log holdings
- Limitations
- The finding aid's date columns are not explained in the excerpt used here and do not establish a decommissioning date, service end, operations, materials, or exposure. No PC-1258-specific digitized deck log or material survey was read in this session.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1258-pc1258-02
-
[4]U.S. General Accounting Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979) [gao]
- Locator
- GAO HRD-80-2 product page, Highlights section
- Finding type
- gov_survey
- Finding
- GAO reviewed Navy use of asbestos in ships and shipyard removal efforts. The official report page states that the Navy's major shipboard asbestos use was thermal insulation, that the 1975 policy removed or replaced asbestos insulation when damaged or when necessary for repairs, and that the policy was modified in 1979 for selected high-maintenance areas.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1975-1979 policy period
- Population
- Navy vessels and shipyard workers generally
- Limitations
- Program-level evidence from fieldwork at Long Beach and Norfolk Naval Shipyards. GAO does not name PC-1258, its builder, the PC-461 class, or any specific material aboard this hull; it cannot establish quantity, location, condition, exposure, or legal eligibility for this vessel.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1258-pc1258-03
-
[5]Class/era inference based on the PC-1258 NavSource specification block and GAO HRD-80-2 [other_primary]
- Locator
- NavSource PC-1258 specifications; GAO HRD-80-2 Highlights and report description
- Finding type
- asbestos_application
- Finding
- A steel PC-461-class diesel submarine chaser completed in 1945 falls within the Navy's documented historical asbestos-use era. Era-standard applications that could occur on a diesel patrol craft include diesel-exhaust and machinery lagging, gaskets, valve and machinery packing, electrical insulation, fireproofing, and deck coverings. PC-1258's two-diesel propulsion plant means no steam-boiler or turbine-lagging pathway is asserted.
- Verification
- inferred
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1943-1946 U.S. construction and Navy service
- Population
- World War II construction trades and U.S. Navy crew, not individually documented for asbestos exposure aboard this hull
- Limitations
- Inference only, not a ship-specific finding. Neither NavSource nor GAO identifies an asbestos product, manufacturer, location, quantity, survey, or abatement action aboard PC-1258. The normalized product list describes possible era applications and must not be read as proof of installation.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1258-pc1258-04
-
[6]Naval History and Heritage Command, Online DANFS index; PC-1258-specific entry not retrieved [nhhc_danfs]
- Locator
- NHHC Online DANFS index and checked PC-1258 URL variants; NavSource DANFS-availability note
- Finding type
- historical_record
- Finding
- The NHHC Online DANFS route was checked, and candidate PC-1258-specific history URLs returned 404 during this session. NavSource separately states that no DANFS history is currently available for PC-1258. No DANFS ship-specific history was therefore used for this record.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Limitations
- This is a retrieval/availability finding, not proof that no paper or unpublished Navy history exists. It does not establish any fact about asbestos, exposure, or disposition beyond the absence of a retrievable DANFS page in the checked route.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1258-pc1258-05
-
[7]Batch-7753 source review and search ledger for USS PC-1258 [other_primary]
- Locator
- Search-ledger rows sl-uss-pc-1258-pc1258-01 through -10
- Finding type
- asbestos_application
- Finding
- No ship-specific asbestos survey, abatement record, hazmat disclosure, environmental record, product inventory, or qualifying asbestos-litigation result was established in the sources completed during this session. PC-1258 asbestos documentation remains unknown; the CourtListener litigation component is an open gap because the authenticated helper stopped on its first request when the fleet-wide pacing budget was spent.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03 research session
- Limitations
- A negative public-source finding does not prove absence of asbestos aboard the hull. CourtListener was not completed and must not be read as a no-litigation result; unindexed, sealed, paper, and undigitized records remain possible. No individual exposure, causation, quantity, remaining material, or legal eligibility is established.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1258-pc1258-06