Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
-
[1]research packet 898-packet.md (2 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-498-pc498-pkt-898-packet-md
-
[2]Naval History and Heritage Command, DANFS, 'SC-401 - SC-500' [nhhc_danfs]
- Locator
- SC-497 class grouping and individual SC-498 entry
- Finding type
- vessel_history
- Finding
- NHHC's DANFS group entry records SC-498 as built at Westergard Boat Works, Rockport, Texas; keel laid 12 March 1941; launched 21 July 1941; commissioned 29 April 1942; and transferred to France 18 October 1944. The entry places SC-498 in the SC-497 class and gives the class-level diesel propulsion, armament, and complement data.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Limitations
- The entry is indexed under SC-498, not a separate PC-498 narrative. It supports the correction from PC-461 class to SC-497 class and the listed hull milestones; its propulsion, armament, and complement figures are class-level and do not establish asbestos content or individual exposure. It does not state the later French disposition.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-498-pc498-01
-
[3]National Archives, Special List #44, by Ship Numbers [other_primary]
- Locator
- PDF p. 69, row PC-498
- Finding type
- historical_record
- Finding
- The National Archives Special List #44 by ship number lists PC-498 with a logbook coverage range beginning 29 April 1942 and ending 1 July 1942.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Limitations
- The index supplies the dates of indexed logbook coverage; it independently matches the commission-date field but does not itself establish commissioning, decommissioning, construction, builder, service narrative, or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-498-pc498-02
-
[4]U.S. General Accounting Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 [gao]
- Locator
- Report highlights and Navy policy discussion
- Finding type
- gov_survey
- Finding
- GAO's 1979 review states that the Navy used asbestos extensively aboard ships and that the Navy's policy concerned removal and replacement of asbestos insulation during ship repairs. This supplies Navy-wide era context for a 1941-42 Navy construction, not a finding about PC-498/SC-498.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Limitations
- Program-level evidence; the report does not name PC-498, SC-498, the SC-497 class, Westergard Boat Works, or any component aboard this hull. It cannot establish asbestos presence, quantity, location, or exposure aboard this vessel.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-498-pc498-03
-
[5]Era inference from NHHC DANFS SC-497-class diesel specification and GAO HRD-80-2 Navy-wide asbestos-use record [gao]
- Locator
- DANFS SC-497 class grouping; GAO report highlights and policy discussion
- Finding type
- asbestos_application
- Finding
- A diesel-driven SC-497-class patrol craft built in 1941-42 falls within the Navy's documented asbestos-use era. Machinery and exhaust insulation, gaskets, valve packing, electrical insulation, and accommodation insulation are reasonable era/class application categories, but no hull-specific material schedule was located and none is asserted as installed aboard PC-498/SC-498.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Limitations
- Class/era inference only. The cited sources do not identify asbestos aboard this hull, a product manufacturer, a quantity, a location, a survey, or an exposure event. Diesel propulsion means no boiler/turbine-lagging claim is made.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-498-pc498-04
-
[6]USS PC-498 research ledger and official-source review, 2026-10-03 [other_primary]
- Locator
- Search-ledger rows sl-uss-pc-498-pc498-01 through -09
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement record, hazmat disclosure, or qualifying litigation record was verified in the accessible research. The record therefore remains a class/era-context record rather than a ship-specific asbestos finding.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Limitations
- This is a located-record finding, not proof that no asbestos or litigation record exists. CourtListener pacing stopped the sweep before any result set could be returned, so litigation status is incomplete rather than a merits-level negative. Firecrawl was unavailable because its keyless service reported a multi-hour quota wait.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-498-pc498-05