Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 906-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: rationale
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-557-pc557-pkt-906-packet-md
-
[2]NavSource Online, Submarine Chaser Photo Archive, PC-557 (live page verified 2026-10-03) [other_primary]
- Locator
- PC-557 page: milestone block, service-operation list, specifications block, and no-DANFS note
- Finding type
- vessel_history
- Finding
- The ship-specific page reports that PC-557 was laid down 31 October 1941 by Luders Marine Construction Co., Stamford, Connecticut; launched 2 August 1942; commissioned 15 October 1942; served in Atlantic, Caribbean, and Mediterranean operations; was decommissioned at Toulon on 27 October 1944 and transferred to France as Dragon (W 83); was later reclassified P-620; and was struck from the Navy Register on 8 January 1959 and scrapped. It also gives the 173 ft 8 in length, 23 ft beam, 10 ft 10 in draft, 20.2-knot speed, complement 65, two General Motors 16-258S diesels, reduction gear, and two shafts.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1959
- Population
- Luders construction trades; U.S. Navy crew 1942-44; French Navy personnel after transfer
- Limitations
- Ship-specific compilation rather than a Navy registry, technical survey, or DANFS narrative. NavSource states that no DANFS history is available for PC-557. The page contains no asbestos, materials, abatement, or exposure finding; complement and machinery details were not independently verified against an official Navy specification sheet.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-557-pc557-01
-
[3]National Archives, Special List #44, by Ship Numbers (ship logbook index PDF) [other_primary]
- Locator
- PDF, ship-number table, row 'PC-557 1/1/1943 10/25/1944'
- Finding type
- historical_record
- Finding
- NARA's ship-number logbook index lists PC-557 with coverage from 1 January 1943 through 25 October 1944, spanning the documented U.S. service period after commissioning and ending shortly before the reported decommissioning.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-01-01 to 1944-10-25
- Population
- PC-557 crew during indexed coverage
- Limitations
- The list is an index, not the deck-log content. It establishes an archival lead and coverage dates but does not identify materials, asbestos, exposure, crew identities, or the reason for the endpoint.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-557-pc557-02
-
[4]U.S. Naval Academy Nimitz Library, World War II Ship Action Reports, 1942-1945, MS 415 finding aid (live page verified 2026-10-03) [museum_official]
- Locator
- Contents List, Series 3: Ships M-Z; Box 16 Folder 46, PC-557 entry
- Finding type
- historical_record
- Finding
- The official finding aid lists 'U.S.S. PC-557 (Submarine Chaser), September 1943. Operation Avalanche (Allied Landings at Salerno)' in Box 16, Folder 46. The finding aid describes the collection as U.S. Navy ship action reports filed by individual vessels and states that access is unrestricted.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- September 1943
- Population
- PC-557 crew and ship-action record for September 1943
- Limitations
- This is a finding-aid description, not the report text. It establishes an action-report archival lead and a September 1943 Salerno association; it does not establish asbestos, materials, maintenance, or exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-557-pc557-03
-
[5]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979) [gao]
- Locator
- GAO HRD-80-2 product page; full-text access gap documented
- Finding type
- gov_survey
- Finding
- GAO's Navy program review documents Navy-wide asbestos use and identifies thermal insulation as the major shipboard use, covering the period relevant to this 1941-42-built, 1942-44 U.S.-service hull.
- Verification
- partial
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 report concerning Navy practices spanning the ship's service era
- Population
- Navy shipyard workers and crews, Navy-wide
- Limitations
- Program-level evidence only; it does not name PC-557, establish that asbestos was installed aboard this hull, identify a product or quantity, or establish exposure. Full text was not retrieved because gao.gov automated access returned HTTP 403; the product page and previously verified program description were used.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-557-pc557-04
-
[6]Era inference based on PC-557 ship-specific diesel specifications, PC-461-class/era context, and GAO HRD-80-2 [other_primary]
- Locator
- NavSource PC-557 propulsion block; GAO HRD-80-2 program-level asbestos context
- Finding type
- asbestos_application
- Finding
- A steel diesel submarine chaser built and operated in the Navy's documented asbestos-use era could have had era-standard thermal or exhaust insulation, gaskets, valve packing, electrical insulation, or compartment materials. The record makes no steam-plant or boiler/turbine-lagging claim because the cited hull specification is diesel-only.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1944
- Population
- Luders construction trades; U.S. Navy crew 1942-44
- Limitations
- Class/era inference only. No hull-specific survey, material list, work package, hazmat disclosure, abatement record, manufacturer attribution, or quantity was located. These possible applications must not be read as confirmed aboard PC-557.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-557-pc557-05
-
[7]Completed source sweep and incomplete CourtListener sweep recorded in this record's search ledger [other_primary]
- Locator
- search_ledger rows sl-uss-pc-557-pc557-01 through -09
- Finding type
- asbestos_application
- Finding
- No qualifying ship-specific asbestos survey, abatement record, hazmat disclosure, materials inventory, or verified asbestos-litigation record was located in the sources completed for PC-557. The four-query CourtListener sweep was not completed: the first authenticated base query reached the fleet pacing stand-down before returning a result, and the remaining three queries were not run.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03 research pass
- Limitations
- This is a documented search result, not proof that no record exists. CourtListener status is incomplete and must not be treated as a litigation negative. Deck logs, the September 1943 action report, Navy construction/repair files, French service records, and future authenticated litigation queries remain open leads.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-557-pc557-06