Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
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[1]research packet 902-packet.md (2 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: PHANTOM
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Evidence ID
- uss-sc-527-sc527-pkt-902-packet-md
-
[2]NavSource Online, Submarine Chaser Photo Archive, SC-527 (live URL verified 2026-10-03); page reproduces a U.S. Coast Guard official-history extract from Transports and Escorts, vol. 1, p. 172 [other_primary]
- Locator
- SC-527 timeline at lines 15-24; history addendum at lines 56-64; live page checked 2026-10-03
- Finding type
- vessel_history
- Finding
- SC-527 is documented as a wooden SC-497-class submarine chaser. The archival page gives keel laid 9 September 1941 at Mathis Yacht Building Co., Camden, New Jersey; launched 21 January 1942; commissioned as PC-527 on 11 May 1942; reclassified SC-527 in April 1943; decommissioned 15 February 1946 at Samar; struck 26 February 1946; transferred to the Foreign Liquidation Commission 25 May 1947; sold in the Philippines in 1948; fate unknown.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Mathis construction workforce; U.S. Navy/Coast Guard operating crew; postwar disposal population unknown
- Limitations
- Ship-specific historical record only; it does not document asbestos, material content, exposure, abatement, or litigation. NHHC's accessible SC-501–600 index gives a 4 September 1941 keel date and 28 May 1942 commission date, so the conflicting milestones are not silently harmonized. The NavSource page is an archival compilation, not a current NVR record.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-527-sc527-01
-
[3]NavSource SC-527 specification block and official-history extract (live URL verified 2026-10-03) [other_primary]
- Locator
- Specifications at lines 25-34; official-history sections at lines 68-88
- Finding type
- historical_record
- Finding
- The page reports 148 tons displacement, 110 feet 10 inches length, 17 feet beam, 6 feet 6 inches draft, 15.6 knots, complement 28, one 40 mm mount, two .50-caliber machine guns, two depth-charge projector Y guns, two depth-charge tracks, and two 880-bhp General Motors 8-268A diesel engines with Snow and Knobstedt single-reduction gear and two shafts. The reproduced Coast Guard history records Greenland Patrol, convoy escort, ice breaking, hospital transport, anti-submarine patrol, local escort, a July 1943 collision with USS Falcon, and later transfer to the Pacific/7th Fleet in late 1944-45.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Coast Guard operating crew and Navy/yard repair personnel, 1942-1946
- Limitations
- Ship-specific specifications and service narrative only; no asbestos content, exposure measurement, work package, or present-condition finding. The page states that no further World War II activity reports were available after August 1944 for the reproduced Coast Guard history, so later movements are carried only as separately reported archival milestones.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-527-sc527-02
-
[4]U.S. General Accounting Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979; government product page located in live indexed search results) [gao]
- Locator
- GAO HRD-80-2 Highlights and indexed report text; direct PDF access gap
- Finding type
- asbestos_application
- Finding
- GAO's Navy program review describes shipboard asbestos applications at the program level, including thermal insulation for machinery, equipment, and piping as the major application, plus piping-system gaskets and packing, electrical components, deck tile, and equipment brakes. SC-527's 1941-42 construction and 1942-46 Navy service fall within the historical Navy shipbuilding period addressed by this 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 SC-527 and does not establish that any listed product was installed aboard this hull, its quantity or condition, individual exposure, causation, or legal eligibility. The full PDF returned HTTP 403 on direct fetch; the government product-page summary and indexed report text were used, and the access limitation is recorded.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-527-sc527-03
-
[5]Naval History and Heritage Command, DANFS index SC-501–SC-600, SC-527 entry (indexed page located; direct URL returned 404/502 during live verification) [other_primary]
- Locator
- NHHC DANFS SC-527 indexed entry; direct fetch returned 404/502 on 2026-10-03
- Finding type
- historical_record
- Finding
- The NHHC indexed entry identifies SC-527 as built at Mathis Yacht Building Co., with keel laid 4 September 1941, launched 21 January 1942, commissioned 28 May 1942, and transferred to the Foreign Liquidation Commission 25 May 1947. These dates conflict with the live NavSource page's 9 September 1941 keel date and 11 May 1942 commission date; both source statements are preserved and the discrepancy remains unresolved.
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1947
- Population
- Navy historical-record users; construction and operating populations
- Limitations
- The NHHC page was not live-retrievable at research time, so this is an access/correction record based on the indexed result, not a fully live-verified citation. It does not document asbestos or exposure. No date was selected as a silent reconciliation of the discrepancy.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-527-sc527-04
-
[6]Batch-7902 source sweep and required authenticated CourtListener helper searches; see search_ledger [other_primary]
- Locator
- search_ledger rows sl-uss-sc-527-sc527-01 through -06
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement contract, hazmat disclosure, material specification, or verified asbestos litigation record naming USS SC-527 was located in the sources reviewed. The four required CourtListener base searches were invoked through the authenticated helper, but the fleet limiter reported that its paced request budget was temporarily spent before usable result payloads could be obtained; litigation status is therefore blocked, not a negative result. No asbestos-qualified variants were run because base-query overflow was not established.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard or absence of litigation. The CourtListener helper was the only litigation access path used; no anonymous, raw, or v3 API request was made. One duplicate first-query process was terminated after the limiter reported the stand-down condition; no result payload was used.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-527-sc527-05