Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
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[1]research packet 1075-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-65-yms65-pkt-1075-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-65 - construction/disposal timeline, specifications, photo captions (verified live 2026-10-05) [other_primary]
- Locator
- NavSource 11/19065.htm header block, specifications block, and photo captions
- Finding type
- vessel_history
- Finding
- Documented for this hull: YMS-1 Class Auxiliary Motor Minesweeper, call sign Nan-Item-Dog-Oboe. Laid down 7 January 1942 by the Gibbs Gas Engine Co., Jacksonville, FL; launched 30 March 1942; completed 5 July 1942; struck from the Naval Register 10 June 1947; transferred to the War Shipping Administration in September 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 General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Photographic record: Library of Congress photo 8b03715r showing YMS-64 and YMS-65 under construction, c. April 1942; U.S. Navy photo NH 79686 showing YMS-65 in San Francisco Bay, 1945-1946. Page states 'There is no DANFS history available for YMS-65.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-1947
- Population
- Gibbs construction trades (1942); crew (1942-47); War Shipping Administration handlers (1947)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestones generally track official records but are unverified against the ship's own papers. 'Completed' rather than 'Commissioned' is the label carried; uboat.net records the same date as 'Commissioned.' No asbestos or material content. The NH 79686 photo caption dates her San Francisco Bay presence only to '1945-1946.'
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-01
-
[3]NARA Special List #44 - List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947 (ship-number index) - YMS-65 logbook holdings (verified live 2026-10-05) [other_primary]
- Locator
- Special List #44 by ship numbers, YMS block (YMS-65 entries); series context per archives.gov/research/military/logbooks/navy (RG 24 Entry 118, NAID 581208)
- Finding type
- historical_record
- Finding
- NARA inventories logbooks for YMS-65 in two date ranges: 8/15/1942-10/31/1943 and 1/1/1944-6/30/1945 (Special List #44, by ship numbers). These are the vessel's deck logs held in Record Group 24 (Bureau of Naval Personnel), Entry 118, at the National Archives at College Park. The coverage begins about six weeks after her 5 July 1942 completion and ends 30 June 1945 - one day before the Balikpapan landings in which she participated. A coverage gap exists for November-December 1943.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-08-15 to 1945-06-30 (holdings coverage; with Nov-Dec 1943 gap)
- Population
- Crew and any embarked personnel, Aug 1942 - Jun 1945 (periods covered)
- Limitations
- Archival lead only: the inventory proves NARA holds the physical logbooks - they are NOT digitized (YMS-65 does not appear on the NARA 'Navy Deck Logs Available in the National Archives Catalog' online list, which is dominated by postwar-era logs). Log coverage dates are not commissioning/decommissioning dates. Contents unexamined - whether the logs record overhauls, availabilities, or material conditions is unknown. The prompt's 8/15/1942-10/31/1943 range is the first of two holdings; the second (1/1/1944-6/30/1945) extends coverage through the Balikpapan operation eve.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-02
-
[4]uboat.net Allied Warships of WWII, USS YMS-65 (YMS-65) - warship record and transcription of the TG 78.2.9 minesweeping narrative for Operation Oboe II, Balikpapan (verified live 2026-10-05) [other_primary]
- Locator
- uboat.net ship page 9479: data table; 'Notable events' - Operation Oboe II, Part I (composition of forces; pre-landing phase narrative)
- Finding type
- vessel_history
- Finding
- Documented for this hull: ordered 1 April 1941; laid down 7 January 1942; launched 30 March 1942; commissioned 5 July 1942; stricken 10 June 1947. Operational record: YMS-65 (Lt. C.R. Silk, USNR) was a unit of the YMS task unit under Lt.Cdr. D.W. Blakeslee, USNR, within the Minesweeping Unit TG 78.2.9 (Lt.Cdr. T.R. Fonick, USNR) for Operation Oboe II - the Allied landings at Balikpapan, Borneo, 1 July 1945 ('Fox' day). The transcription's order of battle lists the YMS unit as 'TU 72.2.92' while the narrative text calls it 'TU 78.2.92' - under TG 78.2.9, 78.2.92 is the consistent reading. At 1300I/30 June 1945 YMS-65 and YMS-269 reported for duty with TU 78.2.9; at 0615/1 July the YMS commenced scheduled sweeping adjacent to the landing beach. Pre-landing sweeps cleared Allied influence mines and enemy moored contact mines in Balikpapan Bay over 'Fox'-20 to 'Fox' day.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1945-06-30 to 1945-07-01 (dates YMS-65 is named in the narrative; operation pre-landing phase ran 11 Jun - 1 Jul 1945)
- Population
- Crew under Lt. C.R. Silk, USNR, June-July 1945
- Limitations
- uboat.net is a private secondary compilation transcribing the official Balikpapan operation order/action report - strong for order of battle and chronology, but a transcription rather than the primary document (TG 78.2 action report itself not independently fetched). Ordered/commissioned labels differ from NavSource's 'Completed' wording. No asbestos content. The minesweeping narrative documents operations, not material conditions aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-03
-
[5]Shipbuilding History (T. Colton), 'Gibbs Gas Engine Works, Jacksonville FL' yard page - hull ledger row for YMS 65 and yard corporate history (verified live 2026-10-05) [other_primary]
- Locator
- Gibbs yard page: header history paragraph; hull table row 'YMS 65'
- Finding type
- vessel_history
- Finding
- The builder's yard ledger documents this hull: 'YMS 65, US Navy, Minesweeper, 278d GT, 136 ft, delivered 5-Jul-42, Struck 1947.' Yard context: Gibbs Gas Engine Works was founded 1911, a prolific builder of gas engines and small wooden and steel vessels in peacetime and both World Wars; renamed Gibbs Corporation after WWII, sold to Aerojet-General Shipyards Corp. in 1964, merged into Jacksonville Shipyards, sold to Fruehauf Corp. 1969; the yards closed for good in 1992 under Terex Corp. The Gibbs yard stood at the east end of Prudential Drive, Jacksonville.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942 (build); 1911-1992 (yard history)
- Population
- Gibbs construction trades (1942)
- Limitations
- Secondary compilation by a specialist shipbuilding historian - the yard ledger is a reconstruction, not a primary contract document; dates agree with NavSource and uboat.net. The post-1964 corporate lineage (Aerojet-General, Jacksonville Shipyards, Fruehauf, Terex) is yard history - no facility asbestos documentation for the 1942 build period is attached. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-04
-
[6]Navy and Marine Corps Awards Manual, NAVPERS 15,790 (Rev. 1953), Part II Unit Awards - Presidential Unit Citation list for Task Unit 78.2.9, Balikpapan (HyperWar transcription; verified live 2026-10-05) [other_primary]
- Locator
- Awards-II.html, Presidential Unit Citation table, 'Task Unit 78.2.9' row
- Finding type
- historical_record
- Finding
- BOUNDING FINDING: Task Unit 78.2.9 received the Presidential Unit Citation for the Balikpapan operation, 15 Jun-1 Jul 45 (Borneo, Netherlands East Indies). The NAVPERS 15,790 recipient list names 24 units: USS Sentry (AM-299), Scout (AM-296), Scuffle (AM-298), and YMS-9, -10, -39, -46, -47, -49, -50, -52, -53, -95, -196, -314, -315, -335, -336, -339, -364, -365, -366, -368, -392. YMS-65 is NOT on the recipient list even though her documented participation (reported for duty 1300I 30 June; swept on Fox day 1 July) falls inside the citation window - consistent with her late arrival relative to the unit's heaviest sweeping. YMS-65's Balikpapan presence is documented by the order-of-battle/action-report record (ev-03), but she is not a Presidential Unit Citation recipient for the operation.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1945-06-15 to 1945-07-01 (citation window)
- Limitations
- A correction/bounding row, not an exposure finding: prevents over-attribution of the Balikpapan record to a unit award she did not receive. The PUC list is transcribed from NAVPERS 15,790 via HyperWar (ibiblio.org), not fetched from a .mil source. NAVPERS 15,790 is known to contain ship-list errors (the manual's own change pages flag 400+ discrepancies for Leyte/Lingayen) - absence here is strong but not absolute proof; a NAVPERS engagement-star credit for P37-3 Balikpapan (25 Jun-15 Jul 45) is carried for the hull in secondary transcriptions but could not be verified in a primary transcription this session (see gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-09
-
[7]Library of Congress, FSA/OWI Collection - Office of War Information photo series by Howard R. Hollem at the Gibbs yard, Jacksonville FL, April 1942 (sibling item fsa.8b03724 verified in search-surfaced LoC metadata; item fsa.8b03715 captioned 'YMS-64 and YMS-65 under construction' per NavSource) [other_primary]
- Locator
- LoC FSA/OWI items fsa.8b03715 (per NavSource caption) and fsa.8b03724 (search-surfaced metadata); NavSource 11/19065.htm photo table
- Finding type
- historical_record
- Finding
- The Library of Congress FSA/OWI collection holds an April 1942 Office of War Information photo series shot inside the Gibbs Gas Engine Co. minesweeper yard at Jacksonville - exactly when YMS-65 was on the ways (launched 30 March 1942). NavSource captions LoC photo 8b03715r as 'YMS-64 and YMS-65 under construction' (c. April 1942). Sibling frame fsa.8b03724 is captioned: workers at 'an Eastern shipyard now turning out minesweepers for the Navy... Gibbs... Jacksonville, Duval County, Florida, 1942 Apr.' The series documents construction-era conditions at this hull's builder.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-04
- Population
- Gibbs yard workers, April 1942
- Limitations
- Archival lead only: loc.gov returns HTTP 403 (Cloudflare challenge) to automated fetches - item 8b03715 could not be verified live this session; its caption is transcribed from the NavSource page. Photographs establish construction presence, not materials. No asbestos content - any yard-materials documentation would require the contractor's own records.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-05
-
[8]Class/era documentation: NavSource YMS class index (wooden hull, 481 completed of 561 built at 35 yacht yards; verified live); USNI Proceedings, Hobart Hughes, 'Saga of a YMS,' Jan 1948 - class machinery fit, member-gated (existence and header verified via Wayback capture 2021-08-15; machinery excerpt via search index); Pacific War Online Encyclopedia YMS class page (2-shaft GM 8-268A, 880 shp, wooden vessel) [other_primary]
- Locator
- NavSource 11/19idx.htm YMS class overview; USNI Proceedings 'Saga of a YMS' machinery paragraph; pwencycl.kgbudge.com YMS class page
- Finding type
- asbestos_application
- Finding
- A wooden-hulled, all-diesel auxiliary motor minesweeper built in 1942 sits inside the Navy's documented asbestos-use era, but the exposure pathway for this craft type is narrow. The class machinery fit was two GM 8-268A main diesels, a diesel driving the magnetic-sweep generator, and two Hercules 30-kW diesel generator sets - no steam plant anywhere aboard. Era-standard asbestos applications on a diesel craft of this type and period were engine exhaust and muffler lagging, gaskets, valve packing, and electrical insulation; the wooden hull carried no sprayed steel-hull insulation, and with no steam plant aboard there was no boiler or steam-pipe lagging - the dominant insulation mass on steam-driven ships.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1942-1947
- Population
- Gibbs construction trades (1942); crew (1942-47, ~32); WSA disposition handlers (1947)
- Limitations
- Class/era inference only - no hull-specific insulation schedule, material list, or work package located for YMS-65. Names era-standard applications for a small diesel craft, not confirmed installed materials. No quantity. Wooden-hull construction means some standard steel-ship applications (thermal hull insulation) do not apply at all.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-06
-
[9]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 (1942) and service era (1942-47).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- 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 2026-10-05) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-07
-
[10]Batch-9146 search ledger (this record): NavSource; NARA Special List #44; uboat.net; shipbuildinghistory Gibbs yard ledger and YMS index; LoC FSA/OWI (blocked); NHHC DANFS/NVR (no entries); GAO product page; CourtListener; secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-65-yms65-01 through -11
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located for this hull: no asbestos survey, abatement contract, hazmat disclosure, or qualifying litigation naming USS YMS-65 (YMS-65) was found in the public sources searched. CourtListener was swept this session through the authenticated API helper - all four required base queries ('USS YMS-65' opinion, 'USS YMS-65' docket, 'YMS-65' opinion, 'YMS-65' docket; --limit 20) completed and returned count=0 (zero results), a finished sweep rather than a blocked one; no hits existed to classify. Secondary web sweeps surfaced no law-firm or marketing 'asbestos aboard' content and no case naming this hull. The only asbestos-relevant documentation located anywhere is era/program-level (GAO HRD-80-2; class machinery fit) - see ev-06 and ev-07.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 2026-10-05
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard. The physical deck logs at NARA College Park (two ranges, 1942-45) are undigitized and unexamined; yard build records and WSA disposal file are untraced leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-65-yms65-08