Evidence
5 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-5).
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[1]research packet 1042-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (thin sourcing disclosed)
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Limitations
- qualifier: VERIFIED (thin sourcing disclosed)
- Evidence ID
- uss-yms-249-yms249-pkt-1042-packet-md
-
[2]National Archives, Special List 44, by Ship Numbers, Navy deck log entry for YMS-249 [other_primary]
- Locator
- PDF physical page 116, YMS-249 row (listed coverage 6/28/1943–6/30/1945)
- Finding type
- historical_record
- Finding
- NARA's Special List 44 lists Navy deck logs for YMS-249 covering 28 June 1943 through 30 June 1945. This is a record-coverage period only; it does not establish commissioning, decommissioning, or asbestos conditions aboard the vessel.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-06-28 to 1945-06-30 (log coverage)
- Population
- Navy deck-log archival record for YMS-249
- Limitations
- The NARA PDF's physical page 116 contains the YMS-249 entry (the task scope refers to page 117); page 117 begins later YMS entries. The list establishes log coverage, not vessel milestones, service details, or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-249-yms249-01
-
[3]NavSource Auxiliary Motor Minesweeper (YMS) index; individual YMS-249 history page linked from the index [other_primary]
- Locator
- YMS index, YMS-249 link; individual page URL https://www.navsource.net/archives/11/19249.htm was not accessible
- Finding type
- vessel_history
- Finding
- NavSource's live YMS index includes a link for YMS-249, corroborating the hull designation and its placement in the Auxiliary Motor Minesweeper photo archive.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- Not stated on the index
- Population
- YMS-249 hull identity
- Limitations
- The individual YMS-249 URL (https://www.navsource.net/archives/11/19249.htm) was not retrievable during this research (HTTP 406 to direct fetch; Firecrawl was quota-blocked; web cache miss). This row relies only on the accessible index and makes no claim about individual history details.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-249-yms249-02
-
[4]Naval History and Heritage Command photograph catalog, NH 84972, USS YMS-249 in San Francisco Bay, circa 1945 [other_primary]
- Locator
- NH 84972 catalog record title and caption
- Finding type
- historical_record
- Finding
- NHHC's catalog identifies photograph NH 84972 as USS YMS-249 in San Francisco Bay, circa 1945.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- Circa 1945 (photograph date)
- Population
- YMS-249
- Limitations
- The catalog caption supports hull identity and the approximate photographic date/location only; it does not document construction or service milestones, asbestos, or the vessel's current location.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-249-yms249-03
-
[5]Primary-source review and search ledger for USS YMS-249 / YMS-249 [other_primary]
- Locator
- See search_ledger entries sl-01 through sl-04 and gaps
- Finding type
- asbestos_application
- Finding
- No ship-specific asbestos documentation or primary-source designation alias was located in the reviewed material. Asbestos documentation for this hull remains unknown.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- Research through 2026-10-04
- Population
- YMS-249
- Limitations
- A negative research result, not proof of absence. Search coverage was limited: the individual NavSource page was inaccessible; Firecrawl was quota-blocked; and CourtListener work was stopped after the helper reported that the fleet-wide request budget was momentarily spent. No exposure conclusion is drawn from class, era, construction, or propulsion.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-249-yms249-04