Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
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[1]research packet 1043-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-yms-260-yms260-pkt-1043-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-260 (live page verified 2026-10-04) [other_primary]
- Locator
- NavSource 11/19260.htm: timeline and specifications blocks
- Finding type
- vessel_history
- Finding
- NavSource identifies this hull as YMS-260, a YMS-1-class auxiliary motor minesweeper; gives laid-down date 20 May 1942 at South Coast Co., Newport Beach, California; launched 6 September 1942; completed and commissioned as USS YMS-260 on 9 April 1943; transferred to the Soviet Union on 2 August 1945 and reclassified T-527; placed out of service 15 April 1955; and scrapped 11 July 1956. Its specification block lists 270 tons, 136 feet, 24 feet 6 inches beam, 8-foot draft, 15-knot speed, complement 32, and two General Motors 8-268A diesel engines on two shafts. The page states that no DANFS history is available for YMS-260.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1956
- Population
- South Coast construction workforce (1942); U.S. Navy crew (1943-1945); Soviet service and disposal personnel (1945-1956)
- Limitations
- NavSource is a volunteer photo-archive compilation rather than a Navy registry or archival finding aid. It establishes the page's reported timeline and specifications, but does not document asbestos, material condition, individual exposure, or legal eligibility; the transfer designation T-527 is not independently corroborated here by a hull-specific U.S. primary record.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-260-yms260-01
-
[3]National Archives, Special List #44, by Ship Numbers, PDF (live source verified 2026-10-04) [other_primary]
- Locator
- Special List #44, by Ship Numbers, YMS-260 entry: PDF p. 116 in current viewer text (batch brief: p. 117)
- Finding type
- historical_record
- Finding
- NARA's Special List #44 lists YMS-260 with Navy deck-log coverage from 9 April 1943 through 2 September 1945.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-04-09 to 1945-09-02
- Population
- YMS-260 crew and Navy activities represented in the deck logs
- Limitations
- This is an archival custody/index entry and establishes log coverage only; it does not by itself establish commissioning or decommissioning dates, operations on particular days, asbestos content, crew exposure, or legal eligibility. The PDF text rendering places the entry at PDF page 116; the batch brief identifies page 117, so both locator conventions are recorded.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-260-yms260-02
-
[4]National Archives, Researching Asbestos aboard US Naval Vessel up through 1961 (live source verified 2026-10-04) [other_primary]
- Locator
- NARA guided-topic page, archival-series discussion for ship-specific asbestos research
- Finding type
- regulatory
- Finding
- NARA's research guide identifies RG 19 Bureau of Ships correspondence, ship/general information books, specifications, engineering drawings, and related Navy records as the archival pathway for determining asbestos in Navy vessels built or operated through 1961.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-04
- Study period
- 1941-1961
- Population
- Navy ship construction and maintenance records, 1941-1961
- Limitations
- This is a research pathway, not a YMS-260 material record. The cited guide does not establish that asbestos was installed aboard this hull, remained aboard, was disturbed, or exposed any person. The identified RG 19 records were not examined in this batch.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-260-yms260-03
-
[5]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979) [gao]
- Locator
- GAO product page HRD-80-2; full page retrieval blocked HTTP 403
- Finding type
- gov_survey
- Finding
- The GAO product description states that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s, providing Navy-wide era context that includes YMS-260's 1942-1956 life span.
- Verification
- partial
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1979 review; historical Navy-use context through the early 1970s
- Population
- Navy ships and Navy workers covered by the program review
- Limitations
- Program-level context only, not a hull-specific finding. The GAO page returned HTTP 403 to direct retrieval on 2026-10-04; the product-page description was available through indexed search. It does not establish any material aboard YMS-260, quantity, remaining material, exposure, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-260-yms260-04
-
[6]Batch 8891 source review and litigation sweep ledger [other_primary]
- Locator
- search_ledger rows sl-uss-yms-260-yms260-01 through -08
- Finding type
- historical_record
- Finding
- No ship-specific asbestos record was located in the sources reviewed: no YMS-260 asbestos survey, abatement contract, hazmat disclosure, product identification, or primary record documenting asbestos aboard this hull was found. No matching hull or documented designation alias was located in the primary sources reviewed beyond the NARA YMS-260 entry; T-527 is retained as a NavSource-reported post-transfer designation, not as independently corroborated primary evidence.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04 research cutoff
- Limitations
- This is a negative search result, not proof that asbestos was absent. NARA's RG 19 pathway remains an open archival lead. CourtListener was not completed because the authenticated helper's first request was stopped by the fleet-wide pacing limiter; therefore this row does not assert that no qualifying litigation exists. No asbestos-qualified variants were run.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-260-yms260-05