Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 1064-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-398-yms398-pkt-1064-packet-md
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[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-398 - construction/milestones, specifications, commanding officer, crew photography (verified live via firecrawl) [other_primary]
- Locator
- NavSource 11/19398.htm header block, specifications block, commanding-officers list, photo captions
- Finding type
- vessel_history
- Finding
- Documented for this hull: YMS-1 class auxiliary motor minesweeper; laid down 16 June 1942 by Henry B. Nevins, Inc., City Island, NY; launched 4 January 1943; completed 13 March 1943; struck from the Naval Register 10 June 1947; transferred to the State Department Foreign Liquidation Commission 1 December 1947 and sold; 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 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Call sign Nan-George-Victor-Baker. Commanding officer LT W. A. Latta, USNR (1945). Page states 'There is no DANFS History currently available for YMS-398.' Photography places the hull at Olongapo Dock, Subic Bay, Philippines, 27-28 May 1946, followed by YMS-329, and includes NHHC photo NH 93219 and crew training images (USNTC Sampson NY, July 1944; Diesel Engineering School, Gulfport MS).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Population
- Nevins construction trades (1942-43); crew (1943-47); Foreign Liquidation Commission transfer handling (1947)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track NVR/DANFS conventions but no DANFS entry exists for this unnamed hull. Contains no asbestos content. 'Completed' vs 'commissioned' wording for 13 March 1943 is unresolved (see gaps); the 1947 strike/sale predates modern ACM-handling regulation and no material record for the FLC sale was located.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-398-01
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[3]Navy and Marine Corps Awards Manual NAVPERS 15,790 (Rev. 1953), Part IV - engagement-star credit list by vessel (HyperWar verbatim transcription at ibiblio.org) [other_primary]
- Locator
- Awards-IV-16.html, 'YMS 398:' entry; operation-name code tables same file (P31-1, P32-2, P34-1, P35, P41-1, P207 sub-codes)
- Finding type
- historical_record
- Finding
- The official Navy awards manual lists this hull for ten dated engagement-credit entries (per the manual's rules the five P207 minesweeping lines count collectively as a single star): Leyte landings 17 Oct - 29 Oct 1944 (P31-1); Lingayen Gulf landing 6 - 13 Jan 1945 (P32-2); Zambales-Subic Bay 29 - 31 Jan 1945 (P41-1); assault and occupation of Okinawa Gunto 25 Mar - 30 Jun 1945 (P34-1); 3d Fleet operations against Japan 5 - 31 Jul 1945 (P35); then post-surrender occupation minesweeping under 'Minesweeping Operations Pacific' (P207): Nagasaki (Kyushu-Korea area) 10 - 12 Sep 1945 (P207-12); Fukuoka 18 - 28 Oct 1945 and 16 Nov - 5 Dec 1945 (P207-18); Kobe (Honshu area) 22 Dec 1945 - 2 Mar 1946 (P207-9); Yangtze River Approaches 22 Feb - 2 Mar 1946 (P207-28). Operation names verified against the manual's own code tables.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-10-17 through 1946-03-02
- Population
- Crew of ~32 during each listed operation window
- Limitations
- Campaign-participation documentation only: establishes presence in the listed operation windows, not specific daily track or task assignments - deck logs are the next source for that. Contains no asbestos content. Manual is a 1953 official publication; the HyperWar transcription was verified verbatim against the operation-code tables on the same page.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-398-02
-
[4]National Archives, Special List 44 - List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, by ship number (PDF page 120, YMS section) [other_primary]
- Locator
- sl-44-ship-number.pdf, PDF page 120, row 'YMS-398 3/13/1943 4/30/1945'
- Finding type
- historical_record
- Finding
- NARA's deck-log index inventories YMS-398 logbooks covering 3/13/1943 - 4/30/1945: 'YMS-398 3/13/1943 4/30/1945'. The logs exist at the National Archives for the commissioning-through-April-1945 span and are the primary source for the hull's day-by-day wartime movements (Leyte, Lingayen, Okinawa windows covered by the awards-manual credits).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-03-13 through 1945-04-30
- Population
- Crew (1943-1945 logged span)
- Limitations
- A logbook index is a locator, not the records themselves: SL-44 lists the first accession only, so logs for May 1945 - 1947 (post-surrender occupation sweep through disposal) fall outside the indexed coverage though they exist in later accessions. Digitization status in the National Archives Catalog could not be verified this session (catalog is JS-rendered and unfetchable from this network). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-398-03
-
[5]Era inference built on: NavSource specifications (wooden YMS-1-class diesel minesweeper; two GM 8-268A diesels, two shafts); shipbuildinghistory YMS index (561 wooden-hulled minesweepers, 35 boatyards, 1942-45); GAO HRD-80-2 (see ev-uss-yms-398-05) [other_primary]
- Locator
- NavSource 11/19398.htm specifications block; shipbuildinghistory.njscuba.net/us-navy-small/ym/ class index
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel motor minesweeper built 1942-43 inside the Navy's documented asbestos-use era carried the era-standard small-craft applications: diesel engine exhaust lagging and manifold insulation, machinery-space thermal insulation, gaskets and valve packing, and electrical insulation in the confined hull volume. As a diesel craft she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Population
- Nevins construction trades (1942-43); crew (1943-47); any yard trades during availabilities
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or builder specification sheet located for YMS-398. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-398-04
-
[6]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2
- 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 (1942-43) 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 this session; content via product-page description (gao.gov automated-fetch block is a standing access gap - see search_ledger).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-398-05
-
[7]Batch-9034 search ledger (this record): NavSource (live); NAVPERS 15790 verbatim transcription; NARA Special List 44 PDF p.120; uboat.net registry; shipbuildinghistory Nevins and YMS tables; NVR (no entry - hull disposed 1947); NARA catalog digitization check (JS-rendered, unverifiable); secondary web litigation sweep; CourtListener authenticated four-query base sweep (completed - see ledger) [other_primary]
- Locator
- search_ledger rows sl-uss-yms-398-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, material list, work package, or verified litigation naming YMS-398 was found in the public sources searched. The authenticated CourtListener four-query base sweep completed: 'USS YMS-398' opinion count 0; 'YMS-398' opinion count 40 (both pages reviewed, all tokenizer noise); 'USS YMS-398' docket count 574 and 'YMS-398' docket count 3,121 (top-20 of each reviewed, all docket-number/tokenizer noise) - zero hits name the vessel. Secondary web sweeps surfaced only ship-registry compilations and a crewmember photo collection - no law-firm or other source asserting asbestos aboard this specific hull was located at all.
- 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. Deck logs (NARA), Nevins yard records (Mystic Seaport Museum collection), and any FLC sale file are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-398-06