Evidence
12 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-12).
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[1]research packet 1062-packet.md (3 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-386-yms386-pkt-1062-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-386 (11/19386.htm) - construction timeline, specifications, disposal, DANFS absence [other_primary]
- Locator
- NavSource 11/19386.htm timeline block and specifications block
- Finding type
- vessel_history
- Finding
- Timeline for this hull: laid down 6 October 1942 by the Colberg Boat Work, Stockton, CA; launched 23 March 1943; completed 23 July 1943; transferred to the State Department, Foreign Liquidation Commission 27 May 1946 and sold; struck from the Naval Register 3 July 1946; 'Fate unknown.' Specifications: displacement 270 t., length 136', beam 24'6", draft 8', speed 15 kts., complement 32; armament one 3"/50 dual purpose gun 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. NavSource notes: 'There is no DANFS history available for YMS-386.' Call sign: Nan - Fox - Uncle - Love.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1946
- Population
- Colberg construction trades (1942-43); crew (1943-46)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates generally track NVR/DANFS-era records but carry no primary citation. 'Completed' is NavSource's term for the 23 July 1943 in-service event; secondary sources (uboat.net, Wikipedia) say 'commissioned' the same date, and NARA deck-log coverage begins 7/23/1943. No asbestos content. No image of this hull is held.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-01
-
[3]National Archives, Special List #44 (List of Logbooks of US Navy Ships, Stations, and Miscellaneous Units, 1801-1947), ship-number edition, PDF page 120 [other_primary]
- Locator
- sl-44-ship-number.pdf, PDF page 120, 'YMS-386 7/23/1943 6/30/1945' (verified by direct PDF text extraction 2026-10-04)
- Finding type
- historical_record
- Finding
- NARA inventories U.S. Navy deck logs for YMS-386 covering 7/23/1943 through 6/30/1945 - the full span from her 23 July 1943 in-service date through mid-1945. Logbooks of this era sit in Records of the Bureau of Naval Personnel, RG 24, Entry 118 (NAID 581208); logs for this hull are not among the digitized deck logs published in the National Archives Catalog.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-07-23 to 1945-06-30 (coverage window)
- Population
- Crew (1943-45 coverage window)
- Limitations
- Inventory coverage only - establishes that logs exist at NARA, not their contents, and not where the ship operated. The listed coverage ends 6/30/1945, three months before her documented Okinawa/Japan minesweeping service; location and status of July 1945-May 1946 logs for this hull is unverified (likely the post-1941 deck-log series at Archives II, College Park - NHHC notes unclassified 1941-1983 deck logs sit with NARA's Modern Military Branch). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-02
-
[4]Nevada Appeal (Carson City, NV), Ken Beaton column 'One of 16,000,000 stories,' 10 November 2016 - veteran Jack Wolfe service profile with journal extracts of GM1 Clifford M. Medley [reputable_press]
- Locator
- Nevada Appeal 2016-11-10 column, YMS-386 passages (Okinawa at surrender; Kobe/Nagoya/Yokohama sweep assignment; Medley journal 10/4/1945 Buckner Bay to Unton Ko)
- Finding type
- vessel_history
- Finding
- Veteran-account station detail for this hull: crewman Jack Wolfe was assigned to 'a wooden mine sweeper, YMS-386 (Yard Mine Sweeper)' in the Pacific. Per the account: when Japan surrendered on 15 August 1945 'YMS-386 was in an Okinawa harbor'; she was then 'assigned to clear mines from the Japanese harbors of Kobe, Nagoya and Yokohama.' Gunners Mate 1st Class Clifford M. Medley served aboard June-December 1945; his journal records YMS-386 sailing 4 October 1945 from Buckner Bay, Okinawa around southern Okinawa to Unton Ko on northern Okinawa, with Wolfe at the helm into Typhoon Louise's waves - 'YMS-386 and three other ships survived Louise.'
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1945 (account window)
- Population
- Jack Wolfe (crew); GM1 Clifford M. Medley (crew, Jun-Dec 1945); YMS-386 crew 1945
- Limitations
- Single-source veteran/memoir journalism, not an official record - crew recollections and a quoted personal journal, unverified against the ship's deck log. The journal's claim that 'nine ships were lost at sea, no survivors' overstates the official record (CINCPAC: 12 ships sunk, 222 grounded, 36 dead and 47 missing) and is not carried as fact. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-03
-
[5]NHHC, 'Pacific Typhoon October 1945 - Okinawa' - extract from Commander in Chief, Pacific Fleet and Pacific Ocean Areas report on the Surrender and Occupation of Japan (Typhoon 'Louise', 9 October 1945), including Appendix III ship-damage list [nhhc_danfs]
- Locator
- CINCPAC report extract, 'Typhoon Louise - The 9 October 1945 Storm at Okinawa' narrative and Appendix III table (YMS entries)
- Finding type
- historical_record
- Finding
- Official CINCPAC documentation of the 9 October 1945 storm at Okinawa that the veteran account places this hull in: the center passed Buckner Bay about 1600 with steady 100-knot winds and gusts to 120; 12 ships were sunk, 222 grounded, and 32 damaged beyond ships'-company repair; 36 dead, 47 missing, roughly 100 seriously injured. Appendix III's hull-by-hull damage list does NOT include YMS-386 - consistent with the veteran account that she survived the storm underway off northern Okinawa. Her Colberg block-mates YMS-383 ('Grounded - Sunk, strike from register') and YMS-384 ('Sunk') appear; Colberg-built YMS-99 was refloated.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-10-09
- Population
- All hands afloat and ashore at Okinawa 9 Oct 1945 (fleet context)
- Limitations
- Documents the storm event officially; the hull's survival is corroborated only by absence from the damage list plus the veteran account - absence from a damage list is not proof of no damage. YMS-386's precise position on 9 October 1945 rests on the Medley journal (ev-03), not this document. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-04
-
[6]NHHC, 'United States Pacific Fleet Organization, 1 May 1945' (minecraft roster checked) + NHHC 'Allied Ships present in Tokyo Bay' (CINCPAC Serial 0395, 11 February 1946 - surrender-day YMS list checked) [nhhc_danfs]
- Locator
- PacFlt 1 May 1945 org doc, MINECRAFT PACIFIC FLEET YMS tables (checked YMS 1-590, no 386); Tokyo Bay page, 'Motor Mine Sweeper (YMS)' list (YMS-177/-268/-276/-343/-362/-371/-390/-415/-426/-441/-461/-467)
- Finding type
- historical_record
- Finding
- Official rosters checked, hull not listed: YMS-386 does not appear in the 1 May 1945 Pacific Fleet minecraft roster, though Colberg block-mates YMS-383, 387, 388, 389 and 390 do (with named USNR lieutenants); nor does she appear among the 12 YMS motor minesweepers on the CINCPAC list of Allied ships present in Tokyo Bay for the 2 September 1945 surrender. Her wartime assignment chain between July 1943 commissioning and the August 1945 Okinawa presence is therefore undocumented in located official sources.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-05-01; 1945-09-02
- Limitations
- Absence from two rosters is a documentation negative, not a service negative - the 1 May 1945 roster may exclude local-defense or in-transit craft, and Tokyo Bay absence is consistent with an Okinawa station. It does not establish where she was before August 1945. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-05
-
[7]Commander FIFTH Fleet Action Report - The Occupation of JAPAN, 15 August 1945 to 8 November 1945 (A16-3(2p), Serial 0664, 8 November 1945; declassified E.O. 13526, NDC NARA 31 Dec 2012; Fold3 scan via mansell.com) [other_primary]
- Locator
- Part V damage record (report p.16: YMS typhoon losses); Part VI Section K 'Minesweeping' paragraphs 1-13
- Finding type
- historical_record
- Finding
- Official narrative of the post-surrender minesweeping campaign the veteran account assigns this hull to: Commander Minecraft, Pacific was directed to sweep occupation ports on completion-date schedules - Kagoshima 2 Sep, Sasebo 22 Sep, Wakayama 25 Sep, Nagoya (ISE WAN) planned 2 Oct but delayed by the 9 Oct typhoon and U.S. magnetic-mine discoveries, opened 25 Oct; after 20 September the Fifth Fleet assumed all-Japan responsibility and added Kure-Hiroshima, KOBE-OSAKA, Fukuoka, Van Dieman/Colnett/Vincenne Straits. Part V 'Record of Damage to Fifth Fleet Ships' lists YMS-383 sunk at Okinawa 10/9 and other YMS hulls damaged - YMS-386 is not named anywhere in the 111-page report.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-04
- Study period
- 1945-08-15 to 1945-11-08
- Population
- Minecraft Pacific crews, Fifth Fleet area (Aug-Nov 1945)
- Limitations
- The report documents the operation, not this hull - no page names YMS-386 (the only '386' in OCR is YTB-386, harbor tug Washakie). It corroborates that Kobe-Osaka and Nagoya-area sweeps were conducted under Commander Minecraft, Pacific in Oct-Nov 1945; it does not confirm this hull swept them - that rests on the veteran account (ev-03). Yokohama-area sweeps fell under Third Fleet/North Pacific responsibilities, outside this report's direct scope. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-06
-
[8]shipbuildinghistory.com, Colberg Boat Works Stockton CA yard table (T. Colton compilation) - delivery list and yard history [other_primary]
- Locator
- Colberg Boat Works yard table, YMS 383-388 rows; yard-history paragraph
- Finding type
- vessel_history
- Finding
- Yard-level production context naming this hull: Colberg Boat Works, 848 West Fremont Street, Stockton CA - started 1896 by brothers Wilton, Jack and Gordon Colberg, survived into the 1990s. The yard's wartime table lists YMS 95/97/99 then the YMS 383-388 contract block: YMS 383 (delivered 24-Feb-43, foundered 1945), YMS 384 (9-Apr-43, grounded and destroyed 1945), YMS 385 (30-Apr-43, mined and lost 1944), YMS 386 (23-Jul-43, struck 1946), YMS 387 (17-Aug-43, sold 1946), YMS 388 (24-Sep-43, sold 1947) - six 278-ton/136-ft Navy minesweepers, alongside ARS salvage ships, ATR tugs, PCS subchasers, and YP patrol craft; postwar the yard built three MSO ocean minesweepers (Dynamic/Engage/Embattle, 1954).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947 (yard table window)
- Population
- Colberg construction trades (wartime)
- Limitations
- Specialized secondary compilation (shipyard production tables), not a primary registry - dates track NavSource where they overlap. 'Delivery' date for YMS-386 equals the NavSource 'Completed' date. Contains no asbestos or materials content; yard-site contamination is covered separately (ev-10).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-07
-
[9]Era inference built on: NavSource YMS-386 spec block (2 x GM 8-268A diesels, 270t wooden-hulled motor minesweeper); shipbuildinghistory yard table (278t/136ft); GAO HRD-80-2 Navy asbestos-era documentation (ev-09) [other_primary]
- Locator
- NavSource specifications block; shipbuildinghistory Colberg table; GAO HRD-80-2 program context
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel-powered motor minesweeper built 1942-43 sits inside the Navy's documented asbestos-use era; era-standard applications aboard small diesel combatants of this type were exhaust lagging around the engine and muffler runs, machinery insulation, gaskets, valve packing, and electrical insulation in the confined machinery spaces. The wooden hull was specified for non-magnetic sweeping; the diesel plant means no boilers or steam turbines and therefore no boiler/turbine lagging pathway of steam vessels.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1942-1946
- Population
- Colberg construction trades (1942-43); crew (1943-46); any yard trades at wartime availabilities
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or builder's spec sheet located for YMS-386. Names era-standard applications, not confirmed installed materials; wooden-hull construction reduced but did not eliminate asbestos demand (machinery, electrical, and gasket/packing applications remain era-plausible). No quantity, no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-08
-
[10]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 (1942-43) and service era (1943-46).
- 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.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-09
-
[11]EPA CERCLA site profile, COLBERG BOAT WORKS (EPA ID CAN000906010, 848 W Fremont St / 401 N Stockton St, Stockton CA; Not on NPL, Other Cleanup Activity: State-Lead Cleanup) + California DTSC Community Update, Removal Action Workplan for northern 2-acre portion (April 2016) [other_primary]
- Locator
- EPA Superfund site profile CAN000906010 (site info tab, verified live); DTSC Community Update 'Removal Action Workplan Available for Public Review - Northern 2-Acre Portion of Colberg Boat Works' (April-May 2016)
- Finding type
- environmental_record
- Finding
- Government environmental record for this hull's builder site: the former Colberg Boat Works yard is a CERCLA cleanup site under California state lead. The DTSC 2016 Removal Action Workplan for the northern 2-acre portion identifies arsenic in shallow soil as the sole chemical of potential concern (~94 cubic yards above the 20 mg/kg cleanup goal), with a 1,000-gallon gasoline UST removed in 1988 and case-closed in 2003; asbestos is not identified as a site COPC in that document.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-04
- Study period
- 1988-2016 (environmental record window)
- Population
- Site neighbors; cleanup workers (contemporary)
- Limitations
- Yard-site environmental record, not a hull or workforce record - says nothing about asbestos use aboard vessels built there, and covers only the northern parcel's soil program. The state-lead site is not on the NPL; whether other parcels or media carry asbestos findings is unverified (building-material asbestos at a pre-1990s boat yard would be unremarkable but is not documented here).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-10
-
[12]Batch-9021 search ledger (this record): NavSource; NARA Special List 44 PDF and digitized-log index; NHHC (typhoon report, 1 May 1945 fleet org, Tokyo Bay list); ComFifthFleet action report scan; Nevada Appeal; uboat.net; shipbuildinghistory; EPA/DTSC; NavalCoverMuseum; CourtListener (4 base queries via fleet helper) [other_primary]
- Locator
- search_ledger rows sl-uss-yms-386-yms386-01 through -14
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed case naming YMS-386 was found in the public sources searched (see search_ledger). CourtListener authenticated base queries returned zero opinions and zero dockets for "USS YMS-386" and "YMS-386" (2026-10-04). A web sweep for 'YMS-386 asbestos' surfaced no marketing-listicle page for this hull (only colliding hulls DD-386 Bagley and DE-386 Savage) - no banned-source assertions to exclude.
- 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 - era-consistent inference for a 1942-43 diesel wooden minesweeper still places gaskets, packing, exhaust lagging, and electrical insulation as plausible applications. Does not establish or defeat any claim of exposure or legal eligibility. Undigitized deck logs and any Colberg/Navy work packages remain open archival leads.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-386-yms386-11