Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 1048-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-297-yms297-pkt-1048-packet-md
-
[2]NavSource Online, Mine Warfare Vessel Photo Archive, 'YMS-297' (live page verified by direct fetch, 2026-10-04). [other_primary]
- Locator
- YMS-297 page: history and specifications blocks
- Finding type
- vessel_history
- Finding
- NavSource's YMS-297 page identifies this hull as a YMS-1 class auxiliary motor minesweeper. It records laying down on 7 January 1943 by Tacoma Boat Building Co. at Tacoma, Washington; launching on 24 April 1943; completion on 20 September 1943; striking from the Naval Register on 8 October 1946; transfer to the War Shipping Administration in February 1948; and final fate as unknown. It lists 270 tons displacement, a 136-foot length, 24-foot 6-inch beam, 8-foot draft, 15-knot speed, complement 32, and two 880-bhp General Motors 8-268A diesel engines on two shafts.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1948
- Population
- Ship's company; NavSource lists complement 32
- Limitations
- NavSource is a live photo-archive compilation rather than a Navy commissioning record or complete service file. The page does not give a commissioning date, decommissioning date, service narrative, or asbestos information; the diesel specification does not establish the presence or absence of asbestos-containing components. No DANFS history is available on the page.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-297-yms297-01
-
[3]National Archives, Special List 44: List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, by Ship Numbers (live PDF verified 2026-10-04). [other_primary]
- Locator
- PDF p. 118; entry 'YMS-297 9/21/1943 6/30/1945'
- Finding type
- historical_record
- Finding
- National Archives Special List 44, the ship-number index to U.S. Navy deck logs in NARA custody, lists YMS-297 with log coverage from 21 September 1943 through 30 June 1945.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-09-21 to 1945-06-30
- Limitations
- This is a custody/coverage index, not the deck logs themselves. The indexed dates are not asserted as commissioning or decommissioning dates and do not identify asbestos, products, repair work, exposure, or causation. The logs were not examined for this record.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-297-yms297-02
-
[4]U.S. Government Accountability Office, HRD-80-2, Navy Efforts To Protect Workers From Asbestos Exposure (18 October 1979; live product page verified 2026-10-04). [gao]
- Locator
- Highlights; report scope and 1975/1979 replacement-policy summary
- Finding type
- asbestos_application
- Finding
- GAO reported in 1979 that it reviewed the Navy's efforts to protect workers from asbestos exposure at Long Beach and Norfolk Naval Shipyards, including the use of asbestos in Navy ships, removal costs, and policies for replacing damaged or repair-affected asbestos insulation with nonasbestos material.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1975-1979
- Population
- Navy shipyard workers and Navy ships discussed at program level
- Limitations
- Navy-wide and shipyard-program evidence, not a survey or material record for YMS-297. It does not establish that asbestos was installed, remained aboard, was disturbed, or exposed anyone on this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-297-yms297-03
-
[5]CourtListener authenticated-search helper diagnostic, batch 8922 (2026-10-04); see search_ledger. [other_primary]
- Locator
- search_ledger entries sl-uss-yms-297-yms297-04 through -07
- Finding type
- historical_record
- Finding
- The required authenticated CourtListener sweep was not completed. The first base query, exact-name opinion search for USS YMS-297 with limit 20, entered the fleet-wide pacing wait and was stopped; the exact-name docket and YMS-297 opinion/docket queries were not issued. No asbestos-qualified variants were run. This record therefore makes no negative litigation finding.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- A blocked or stopped search is an access gap, not evidence that no case exists. This row does not establish the presence or absence of asbestos litigation, exposure, causation, liability, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-297-yms297-04
-
[6]Batch-8922 bounded source search: NARA Special List 44, live NavSource YMS-297 page, GAO HRD-80-2, and CourtListener helper status (2026-10-04). [other_primary]
- Locator
- search_ledger entries sl-uss-yms-297-yms297-01 through -07
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement record, hazmat disclosure, product identification, or materials specification naming YMS-297 was located in the public sources retained for this record. NARA's unexamined deck logs remain the principal hull-specific archival lead.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- Research performed 2026-10-04
- Limitations
- This is a bounded negative search result, not proof that asbestos was absent aboard the hull. The deck logs were not examined, the CourtListener sweep is incomplete, and nonpublic records may contain relevant information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-297-yms297-05
-
[7]National Archives Navy logbook guidance and Special List 44; Records of the Bureau of Ships (RG 19). [other_primary]
- Locator
- NARA Navy logbook guidance; Special List 44 ship-number index; RG 19 archival lead
- Finding type
- historical_record
- Finding
- Archival leads for hull-level follow-up are the NARA Navy deck-log series indexed by Special List 44 and Bureau of Ships design, construction, and engineering records for the YMS-1 class and Tacoma Boat Building Co.; no such underlying hull file was retrieved in this batch.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-04
- Study period
- 1943-1945 records; construction records not dated here
- Limitations
- Record-path guidance only; no underlying deck log, construction file, work package, insulation drawing, or material survey was retrieved. Nothing in this row is an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-297-yms297-06