Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
-
[1]research packet 1050-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-310-yms310-pkt-1050-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-310 page - construction timeline, specifications, commanding officer, disposal [other_primary]
- Locator
- NavSource 11/19310.htm header block, specifications block, and commanding-officer table
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 17 April 1943 by Henry B. Nevins, Inc., City Island, NY; launched 11 September 1943; completed 1 October 1943; struck from the Naval Register 5 June 1946; transferred to the State Department, Foreign Liquidation Commission in April 1947; fate unknown. Specifications: displacement 270 t.; length 136'; beam 24'6"; draft 8'; speed 15 kts.; complement 32; armament one 3"/50 dual-purpose mount, two 20mm mounts, two depth-charge projectors; propulsion two 880-bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Call sign Nan-Peter-Oboe-William. Commanding officer listed: LT G. B. Motheral, USNR (1945). Page notes no photograph of YMS-310 is available and that no DANFS history exists for this hull. The timeline shows no post-war renaming or AMS reclassification - consistent with the June 1946 stricken date, which predates the 18 February 1947 program that named surviving YMS hulls.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1947
- Population
- Nevins yard construction trades (1943); wartime crew, complement 32 (1943-45); post-war caretaker/disposal personnel (1945-47)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestones generally track NVR/DANFS-era records but are not independently sourced on this page. 'Completed' (1 Oct 1943) is corroborated as the commissioning date by uboat.net but no separate commissioning citation exists; no formal out-of-commission date is documented. Contains no asbestos or material content. The April 1947 Foreign Liquidation Commission transfer destination is not documented - 'fate unknown' is the extent of the record.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-310-01
-
[3]Naval History and Heritage Command, 'United States Pacific Fleet Organization, 1 May 1945' (hosted transcription of the wartime CinCPac administrative organization document) [other_primary]
- Locator
- Minecraft, Pacific Fleet - Mine Squadron Twenty section, YMS roster, p.135 of the transcribed document ('96 | YMS 310 | Lt. G. B. Motheral (USNR)')
- Finding type
- vessel_history
- Finding
- An official Navy organization document places this hull on active Pacific Fleet service as of 1 May 1945: 'YMS 310' appears in the minecraft roster under MINECRAFT, PACIFIC FLEET (R. Adm. A. Sharp), within the MINE SQUADRON TWENTY (Capt. R. A. Larkin) section, commanded by Lt. G. B. Motheral (USNR). This matches the NavSource commanding-officer entry for 1945 and confirms the hull was operating in the U.S. Pacific Fleet minecraft establishment late in the war.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945
- Population
- YMS-310 crew under LT Motheral (as of May 1945)
- Limitations
- Documents assignment and commanding officer as of 1 May 1945 only; the document's left-column numerals (a '96' precedes this row) are location/remark codes whose key is not included in the published transcription, so no specific operating area can be asserted from this source. Establishes fleet service, not what work, locations, or conditions applied. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-310-02
-
[4]ShipbuildingHistory.com (Tim Colton compilation, njscuba mirror), 'Yard Minesweepers (YMS/BYMS)' construction roster; corroborated by uboat.net Allied Warships entry for USS YMS-310 (ship/9730.html) [other_primary]
- Locator
- shipbuildinghistory.njscuba.net YMS roster table, YMS-308 through YMS-312 rows; uboat.net/allies/warships/ship/9730.html data table
- Finding type
- vessel_history
- Finding
- Independent secondary corroboration of the milestones: the yard-minesweeper construction roster lists 'YMS-310 - Henry B. Nevins, City Island NY - 136 ft, 320 t - completed 1 Oct 1943 - struck 1946'; uboat.net adds 'Ordered 1 Jan 1943' and lists the 1 Oct 1943 date as commissioning. The same roster documents sister hulls renamed and reclassified in 1947 (YMS-311 to Robin (AMS-53); YMS-312 to Grackle (AMS-13)) while YMS-310 received no name or redesignation - consistent with her having been stricken 5 June 1946 and held for disposal before the February 1947 naming program.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1947
- Population
- Nevins yard construction trades (1943); wartime crew (1943-45)
- Limitations
- Both are secondary compilations; values agree with NavSource but are not independent primary citations. 'Ordered 1 Jan 1943' (uboat.net) is uncorroborated elsewhere. Displacement shown as 320 t vs NavSource's 270 t - class-spec variance, see gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-310-03
-
[5]National Archives, Special List #44 'List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947' (by ship number); Record Group 24, Entry 118 (NAID 581208) inventory [other_primary]
- Locator
- Special List #44 by ship number, PDF page 118, YMS-310 row; inventory is of RG 24 Entry 118 (NAID 581208)
- Finding type
- historical_record
- Finding
- NARA inventories deck logs for YMS-310 covering 2 October 1943 through 31 October 1945 - the day after completion through the end of the wartime log series. The entry reads 'YMS-310 | 10/2/1943 | 10/31/1945' on page 118 of the ship-number ordering (verified directly in the PDF this session). These logs are held in RG 24 Entry 118 but are NOT among the hulls digitized in the National Archives Catalog (YMS-310 is absent from NARA's 'Navy Deck Logs Available Online' ship list, checked 2026-10-04); they are the primary untapped source for this hull's operating areas, drills, casualties, and any material work.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1945
- Population
- YMS-310 crew (Oct 1943-Oct 1945) - the log period covers her entire documented commissioned life
- Limitations
- An inventory entry establishes that the logs exist in NARA custody and their date span - not their contents. Log coverage ends 31 October 1945; logs for November 1945-April 1947 (through the FLC transfer) are not inventoried in Special List 44 and their whereabouts are undocumented. No asbestos content until the logs are examined.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-310-04
-
[6]Era inference built on: NavSource specification block for this hull (2 x GM 8-268A diesels, 880 bhp, single-reduction gear, twin screw; wooden-hulled YMS-1 class); DANFS spec block for sister YMS-170 (NHHC); NavSource YMS index class description (wooden-hulled type built at 35 U.S. yacht yards); GAO HRD-80-2 Navy asbestos-era documentation (ev-06) [other_primary]
- Locator
- NavSource 11/19310.htm specifications; NHHC DANFS Bunting II (YMS-170) spec block; NavSource 11/19idx.htm class description
- Finding type
- asbestos_application
- Finding
- A diesel-powered wooden motor minesweeper built in 1943 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a diesel minecraft of this type and period were machinery and diesel-exhaust lagging, gaskets, valve and machinery packing, electrical insulation, and insulation board/joiner bulkhead materials in accommodation spaces. As a diesel vessel she carried no steam plant - the boiler and steam-line lagging pathway of steam vessels does not apply, but the small-ship confined-space dynamic (an 8-foot-draft, 136-foot wooden hull with a compact engine room) applies.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1943-1947
- Population
- Nevins construction trades (1943); engine-room and deck crew (1943-45); any yard/base trades at wartime availabilities; disposal/scrapping workforce after April 1947
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or deck-log evidence located for YMS-310. Names era-standard applications, not confirmed installed materials; no quantity and no manufacturer attribution for this hull. Wooden-hull construction reduces but does not eliminate asbestos applications (the diesel plant, gaskets, and electrical/joiner materials remain candidate pathways).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-310-05
-
[7]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (full text blocked, HTTP 403)
- Finding type
- gov_survey
- Finding
- GAO documented that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s - spanning this hull's entire construction (1943) and service era (1943-47).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1979
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. Full text not retrieved - gao.gov blocks automated fetch (HTTP 403, confirmed 2026-10-04); content via product-page description, consistent with prior batches.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-310-06
-
[8]Batch-8938 search ledger (this record): NavSource hull page and YMS class index; NHHC Pacific Fleet organization document; NARA Special List 44 PDF and digitized-logs list; uboat.net and shipbuildinghistory corroborations; NVR probe; NavalCoverMuseum and Naval Marine Archive checks; secondary web sweep; CourtListener (see ledger status) [other_primary]
- Locator
- search_ledger rows sl-uss-yms-310-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming USS YMS-310 was found in the public sources searched (see search_ledger). No DANFS entry exists for this hull and no NVR entry exists (disposed 1946-47, outside NVR coverage). A secondary web sweep surfaced no asbestos-litigation naming of this hull; the only 'asbestos aboard YMS' material is law-firm marketing content asserting asbestos across hull lists without primary sourcing - excluded by source policy. A contemporaneous 1945 Ursinus College newspaper item lists a crew member's address as 'USS - YMS 310, care of the Fleet Post Office, San Francisco' (search snippet only; full PDF is Cloudflare-gated) - consistent with Pacific service but unverified, retained as a lead only.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - the undocumented post-October-1945 period and the unexamined deck logs are genuine open leads. Does not establish that asbestos is or is not present; does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-310-07