Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
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[1]research packet 1074-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-56-yms56-pkt-1074-packet-md
-
[2]National Archives, Special List #44 - List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947, ship-number ordering [other_primary]
- Locator
- Special List #44, ship-number PDF, YMS-56 row (search result text and table entry)
- Finding type
- historical_record
- Finding
- NARA's ship-number inventory lists deck logs for YMS-56 covering 3/20/1942 through 11/30/1945.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-03-20 to 1945-11-30
- Population
- YMS-56 officers and crew maintaining deck logs
- Limitations
- Inventory listing only: it establishes that deck logs are held and gives their coverage dates, not the logs' contents and not commissioning, decommissioning, or continuous service dates. The dated record supports the canonical identity of YMS-56 but does not document asbestos or exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-56-yms56-01
-
[3]National Archives, Navy Deck Logs Available in the National Archives Catalog [other_primary]
- Locator
- NARA page introduction and guidance for deck logs not on the online list
- Finding type
- historical_record
- Finding
- NARA explains that Navy deck logs form chronological accounts of events aboard ships and that the published online list contains only completely digitized holdings; it directs researchers to Archives II for logs not available in the catalog.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-05
- Study period
- Record-series context
- Population
- Navy deck-log records and researchers
- Limitations
- This page describes the record series and digitization status; it does not describe YMS-56's service or materials. No digitized YMS-56 log pages were reviewed.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-56-yms56-02
-
[4]NavSource Online, Auxiliary Motor Minesweeper (YMS) / British Motor Minesweeper index [other_primary]
- Locator
- YMS index introduction, class specifications, and YMS-56 entry
- Finding type
- vessel_history
- Finding
- The YMS class index describes a wood-hulled auxiliary motor minesweeper type, gives a class complement of 33, one 3-inch/50 mount and two 20-mm mounts, designed speed of 12 knots, and General Motors 8-268A diesel engines with two shafts; it lists YMS-56 among the class hulls.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1941-1945 class context
- Population
- YMS-class construction and operating personnel
- Limitations
- Class-index context, not a hull-specific specification or asbestos finding. NavSource is a photographic-history compilation and does not establish YMS-56's individual builder, dates, machinery condition, or installed materials.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-56-yms56-03
-
[5]Batch 9136 source review and search ledger [other_primary]
- Locator
- Search ledger sl-uss-yms-56-yms56-01 through sl-uss-yms-56-yms56-07
- Finding type
- asbestos_application
- Finding
- No ship-specific asbestos documentation was located for YMS-56 in the official-source review: no hull survey, abatement contract, hazmat disclosure, material specification, or other direct record identifying asbestos aboard this hull.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 2026-10-05 research cutoff
- Population
- YMS-56 construction, maintenance, and crew populations
- Limitations
- A negative search result does not prove absence of asbestos; relevant deck logs and other Navy technical records may be undigitized or unlocated. Class/era asbestos use cannot be upgraded to a YMS-56 finding. CourtListener research was incomplete because the fleet limiter stopped the helper after its first attempted base query.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-56-yms56-04
-
[6]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct. 18, 1979), used for Navy-wide era context; paired with the NavSource YMS class index for the diesel/wooden-hull context [gao]
- Locator
- GAO HRD-80-2 product-page description of Navy asbestos use; NavSource YMS index class construction and propulsion description
- Finding type
- asbestos_application
- Finding
- A wooden diesel YMS hull built and operated during WWII belongs to an era in which Navy ships commonly used insulation, gaskets, packing, and electrical materials that may have included asbestos; for this small diesel class, the plausible context is machinery/exhaust insulation and gaskets or packing rather than a steam boiler/turbine plant.
- Verification
- inferred
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1941-1945
- Population
- WWII-era YMS construction and machinery personnel
- Limitations
- Era/class inference only. The cited YMS index does not say that any listed material was asbestos or that it was installed aboard YMS-56; no quantity, manufacturer, location, disturbance event, or remaining material is established.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-56-yms56-05