Evidence
5 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-5).
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[1]research packet 1043-packet.md (3 sources cited) [museum_official]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (thin sourcing
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Limitations
- qualifier: VERIFIED (thin sourcing
- Evidence ID
- uss-yms-250-yms250-pkt-1043-packet-md
-
[2]National Archives, Special List #44, by Ship Numbers [other_primary]
- Locator
- PDF page 117 (printed page 116), YMS-250 row
- Finding type
- historical_record
- Finding
- NARA's index lists YMS-250 with U.S. Navy deck logs covering 1943-07-30 through 1945-06-30. These dates describe the listed log coverage only; they are not asserted as commissioning, decommissioning, or continuous service dates.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-07-30 to 1945-06-30 (deck-log coverage only)
- Limitations
- This archival index establishes the existence and stated date range of deck-log records for YMS-250. It does not itself provide the logs' contents, establish asbestos aboard, establish exposure, or establish the vessel's commissioning or decommissioning dates.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-250-yms250-01
-
[3]NavSource Online, Mine Warfare Vessel Photo Archive, YMS-250 individual page [other_primary]
- Locator
- Individual YMS-250 page, introductory history and specifications block
- Finding type
- vessel_history
- Finding
- The individual NavSource page identifies YMS-250 as a YMS-1 class auxiliary motor minesweeper, corroborating the hull identity. It displays no DANFS history for this hull.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Limitations
- NavSource is an individual-hull secondary history and photo archive, not an official Navy history. It is used here only for the identity corroboration specified in the batch scope; it makes no statement about asbestos or exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-250-yms250-02
-
[4]Batch 8887 research log and source checks (see search_ledger) [other_primary]
- Locator
- Search ledger rows sl-uss-yms-250-yms250-01 through sl-uss-yms-250-yms250-05
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement record, asbestos product record, or asbestos exposure finding for YMS-250 was located in the sources reviewed. The asbestos status is unknown; no ship-specific asbestos exposure is established.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- Research current to 2026-10-04
- Limitations
- A search result gap is not proof that asbestos was absent. The sources reviewed do not establish whether asbestos-containing material was installed, remains aboard, or caused exposure. CourtListener results remain incomplete where the authenticated helper was throttled; see gaps and search_ledger.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-250-yms250-03
-
[5]Batch 8887 primary-source search log (see search_ledger) [other_primary]
- Locator
- Search ledger row sl-uss-yms-250-yms250-03
- Finding type
- vessel_history
- Finding
- No primary-source hull history or documented designation alias beyond the NARA deck-log index was located in the sources reviewed.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- Research current to 2026-10-04
- Limitations
- This is a bounded search result and does not establish that no additional primary record or designation exists. The NARA deck-log index does identify YMS-250 for the stated log coverage; NavSource provides secondary identity corroboration only.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-250-yms250-04