Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
-
[1]research packet 1054-packet.md (3 sources cited) [museum_official]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-336-yms336-pkt-1054-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-336 - designation timeline and specifications (verified live via Firecrawl 2026-10-04) [other_primary]
- Locator
- NavSource 11/19336.htm header timeline and specifications block
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 27 October 1942 by the Seattle Ship Building and Dry Dock Co., Seattle, WA; launched 19 December 1942; completed 24 May 1943; struck from the Naval Register 19 June 1946; 'Transferred to the State Department, Foreign Liquidation Commission 21 October 1947 and sold'; fate listed as 'unknown.' Specifications: 270 t., 136' length, 24'6" beam, 8' draft, 15 kts, complement 32; armament one 3"/50 dual-purpose mount, two 20mm mounts, two depth-charge projectors; propulsion two 880-bhp GM 8-268A diesels, Snow and Knobstedt single-reduction gear, two shafts. Call sign Nan-Queen-How-Peter. No image of the hull is archived on the page. Page states: 'There is no DANFS history available for YMS-336.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947 (page coverage)
- Population
- Seattle Shipbuilding construction trades (1942-43); wartime crew (1943-46); post-sale civilian handlers (1947+)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track NVR/DANFS but no DANFS entry exists to cross-check against. Contains no asbestos content. 'Completed' and 'commissioned' are used interchangeably across sources for this class; the NARA deck-log coverage opening (5/24/1943) corroborates the date.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-336-01
-
[3]uboat.net Allied Warships database, USS YMS-336 (YMS-336) vessel record incl. transcribed Operation Oboe II (Balikpapan) action-report entries (verified live 2026-10-04) [other_primary]
- Locator
- uboat.net ship page 9756, data table + 'Operation Oboe II, Allied landings at Balikpapan' notable-event transcription
- Finding type
- vessel_history
- Finding
- Independent registry corroboration of this hull's milestones: built by Seattle Ship Building and Dry Dock Co. (Seattle, Washington); ordered 11 April 1942; laid down 27 October 1942; launched 19 December 1942; commissioned 24 May 1943; stricken 19 June 1946; sold 21 October 1947. Notable-event transcription for the Balikpapan operation (Operation Oboe II): 'A' echelon departed Morotai 11 June 1945 including USS YMS-336; minesweeping task unit TU 72.2.92 under Lt.Cdr. D.W. Blakeslee, USNR, with YMS-336 commanded by Lt.(jg) J.A. Reid, USNR; pre-'Fox'-day sweeps 20-24 June 1945 under repeated shore-battery fire (YMS-368 twice mine-damaged, YMS-10 and YMS-364 shell-hit, YMS-335 hit with 4 killed and 5 wounded; YMS-336 not individually noted as damaged); 'Fox' day landing 1 July 1945.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947; combat narrative June-July 1945
- Population
- Seattle Shipbuilding construction trades (1942-43); wartime crew (1943-46)
- Limitations
- uboat.net is a researcher-compiled secondary database - corroborates the NavSource timeline and supplies the order date plus a Balikpapan action-report transcription whose underlying report is not identified on the page; the transcription itself shows a unit-numbering variant (header 'TU 72.2.92' vs in-narrative 'TU 78.2.9'), carried as written - see gaps. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-336-02
-
[4]National Archives, Special List 44: List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947 (ship-number sequence, PDF p.119) - deck-log holdings inventory [other_primary]
- Locator
- sl-44-ship-number.pdf p.119, YMS block; cross-checked against archives.gov/research/military/logbooks/navy-online digitized list (hull absent)
- Finding type
- historical_record
- Finding
- NARA holds deck logs for YMS-336 covering 5/24/1943 - 10/31/1945 (Special List 44, verified in the published PDF, p.119: 'YMS-336 5/24/1943 10/31/1945'). Coverage begins at completion/commissioning and extends through the Manila Bay (Feb 1945) and Balikpapan (Jun-Jul 1945) operations into post-war occupation duty. The logs are held at the National Archives at College Park, MD (RG 24); they are NOT among the deck logs digitized in the National Archives Catalog - YMS-336 does not appear on NARA's published online deck-log list (checked 2026-10-04; only AMS-named ex-YMS hulls appear in the YMS range).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1945 (log coverage)
- Population
- Wartime crew (1943-45)
- Limitations
- Archival lead only - the logs are inventoried, not read. Deck logs record events, not material inventories; even when pulled they may contain no asbestos information. Post-October 1945 logs (through the June 1946 striking and 1947 disposal) are not in this inventory line - additional holdings may exist outside Special List 44's 1947 cutoff. The 10/31/1945 end date is later than the common 6/30/1945 collection artifact shared by ~20 other YMS hulls in the same inventory.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-336-03
-
[5]Karig, Harris & Manson, Battle Report: Victory in the Pacific (Rinehart, 1949) - Navy-sanctioned operational narrative compiled from action reports and participant interviews; Manila Bay minesweeping chapter (verified via Internet Archive full text 2026-10-04) [other_primary]
- Locator
- Battle Report: Victory in the Pacific, ch. 'The Rock Regained' - Mariveles/Corregidor minesweeping section, YMS roster (pp. ~233-236 in the 1949 edition)
- Finding type
- vessel_history
- Finding
- Ship-specific combat documentation: YMS-336 (Lt. (jg) James G. McElroy) is listed among the 15 YMS sweeps under Lt. Comdr. James R. Keefer ('the Minesweep King,' aboard Saunter) that cleared the Mariveles Bay / Corregidor minefields in Manila Bay 13-15 February 1945, ahead of the 15-16 February Bataan and Corregidor assaults under Rear Admirals Struble and Berkey. The narrative describes YMS working the flanking sweep zones under Corregidor's shore batteries; 110 contact mines surfaced in the 'Susie' channel in one day; YMS-48 was hit seven times by concealed shore guns and had to be sunk - the unit's only loss. YMS-336 is not recorded as damaged.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-02-13 to 1945-02-15
- Population
- Wartime crew (February 1945)
- Limitations
- Published 1949 operational history - Navy-sanctioned but a secondary narrative, not the raw action report; OCR text on archive.org shows character errors (names rendered 'McElroy' vs 'iicEIroy'-type variants possible elsewhere). Establishes unit membership and CO name at February 1945; does not establish the hull's movements day by day, casualties, or material condition. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-336-04
-
[6]U.S. Navy ships credited for the Navy Occupation Service Medal and China Service Medal (extended) - ship list transcribed from the Navy and Marine Corps Award Manual, NAVPERS 15,790 (1953) - row for YMS 336 (verified live 2026-10-04) [other_primary]
- Locator
- navy_occupation_china_service_Y.html, 'Y' ship table, YMS 336 row (5-cell row verified in page HTML)
- Finding type
- vessel_history
- Finding
- Secretary-of-the-Navy eligibility table credits YMS-336 with Navy Occupation Service, Asia clasp, 10 September - 12 October 1945, and China Service (extended) 13 October 1945 - 19 May 1946. Documented post-war service in Asiatic waters bridging the gap between the deck-log cutoff (31 Oct 1945) and the 19 June 1946 striking.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-09-10 to 1946-05-19
- Population
- Crew (Sep 1945 - May 1946)
- Limitations
- Secondary transcription of a primary Navy document (NAVPERS 15,790) on a commercial ribbon site - the underlying eligibility is a SecNav credit, but the page is not itself a government record; verification_status partial. Dates are eligibility windows for crew award credit, not a complete movement record; does not state where the hull was each day. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-336-05
-
[7]Montevallo (Ala.) Times, January 1946, 'Lt. John Reid Receives Discharge' - wartime service profile of YMS-336's commanding officer (verified via Internet Archive full text 2026-10-04) [reputable_press]
- Locator
- montevallotimes_1946_djvu.txt, item 'Lt. John Reid Receives Discharge' (Jan 1946 issue)
- Finding type
- vessel_history
- Finding
- Contemporary local-press documentation of the hull's post-war itinerary: the paper reports Lt. John A. Reid, USNR, discharged after 27 months' overseas duty including 'USS Y. M. S. 336, 12 months, commanding officer; Philippine minesweeping operations; Balikpapan, Borneo, pre-invasion sweep; Shanghai, Yangtze River sweep; Hoiphong [Haiphong], French Indo-China and Iankin [Tonkin] Gulf minesweeping.' Independently corroborates: the same J.A. Reid named her CO in the Balikpapan action-report transcription (uboat.net); Philippine minesweeping consistent with the Manila Bay operation (Battle Report); and China-coast/Indochina post-war sweeping consistent with the NAVPERS 15,790 China-service window (13 Oct 1945 - 19 May 1946).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1946 (service window); 1946 (publication)
- Population
- Wartime crew under Reid's command (c. Jan 1945 - Jan 1946)
- Limitations
- A veteran's own service summary as printed in his hometown paper - near-contemporary (January 1946) and unusually specific, but self-reported rather than a Navy record; OCR errors in the scan ('Hoiphong' for Haiphong, 'Iankin' for Tonkin) resolved against geography. A 12-month CO tenure ending ~Jan 1946 backdates Reid's assumption of command to ~Jan 1945, overlapping McElroy's documented Feb 1945 tenure - the CO transition date is undocumented (see gaps). Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-336-06
-
[8]Shipbuilding History (Tim Colton), Seattle Shipbuilding yard list + Naval Marine Archive YMS/BYMS builder table (navalmarinearchive.com/sbh/smallships/ym.html) - construction and disposition rows (both verified live 2026-10-04) [other_primary]
- Locator
- shipbuildinghistory.com/shipyards/small/seattle.htm YMS table row 'YMS 336'; navalmarinearchive.com/sbh/smallships/ym.html row 'YMS 336'
- Finding type
- vessel_history
- Finding
- Independent yard-level corroboration: Colton's Seattle Shipbuilding list carries 'YMS 336 | US Navy | Minesweeper | 278d | delivered 24-May-43 | Struck 1946'; the Naval Marine Archive table carries the identical builder and delivery date at 320 tons, 'Struck 1946.' The Seattle Shipbuilding block (YMS-334 through -341) shows the class's disposal pattern: -334 to Thailand 1947 as Bangkeo, -335 to the Philippines 1948, -339 to China 1948, -340 sold private 1947 - consistent with NavSource's FLC disposal of YMS-336 in October 1947.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Population
- Seattle Shipbuilding construction trades (1942-43)
- Limitations
- Researcher-compiled yard tables, not primary construction records - they corroborate builder and delivery date but stop at 'Struck 1946' (no post-Navy disposition recorded for this hull). Tonnage figures differ (278d vs 320 vs NavSource 270) - carried in gaps. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-336-07
-
[9]Era inference built on: NavSource specifications (wooden-hulled YMS-1 class, GM diesel plant); GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) - Navy asbestos-use era documentation [gao]
- Locator
- NavSource specs (270 t., GM 8-268A diesels); GAO product page HRD-80-2 highlights (full-text PDF blocked)
- Finding type
- asbestos_application
- Finding
- A diesel-powered wooden minesweeper built 1942-43 sits inside the Navy's documented asbestos era: GAO found the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s (1975 policy: remove/replace only damaged insulation; 1979 modification: selective replacement in high-maintenance areas). Era-standard applications aboard a small diesel vessel of this type and period were exhaust and stack lagging, machinery insulation, gaskets, valve packing, electrical insulation, and accommodation/galley fireproofing. She carried no steam plant - the boiler/steam-line lagging pathway of larger combatants does not apply, and her wooden hull carried no structural fireproofing of the steel-ship type.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1942-1946 (naval era)
- Population
- Seattle Shipbuilding construction trades (1942-43); crew (1943-46); post-sale buyers/handlers
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for YMS-336. Names era-standard applications, not confirmed installed materials. No quantity. GAO is program-level documentation drawn from Long Beach and Norfolk NSY fieldwork (product page live via Firecrawl; direct PDF fetch blocked, gao.gov HTTP 403 confirmed this session).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-336-08
-
[10]Batch-8966 search ledger (this record): NavSource (hull page + class index); uboat.net; NARA Special List 44 PDF + digitized deck-log list; NHHC DANFS (404); NVR (no detail page, pre-1987 disposal); NHHC Pacific Fleet organization 1 May 1945 (archived copy; hull absent); NAVPERS 15,790 transcription; Battle Report vol. V; Montevallo Times; shipbuildinghistory; navalmarinearchive; GAO HRD-80-2 (PDF blocked); CourtListener authenticated queries; VA BVA (unreachable); secondary web sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-336-01 through sl-uss-yms-336-18
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, VA decision, or docketed case naming this hull was found in the public sources searched (see search_ledger). CourtListener could not be fully queried this session - the authenticated helper returned a fleet-pacing stand-down; litigation status is open, not negative (see ledger and report).
- 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 - a wood-hulled diesel sweeper carried a smaller insulation footprint than steam combatants, but whatever era materials it once carried are undocumented. The hull's post-1947 civilian fate is unknown, so no post-Navy hazmat trail can exist in located records. 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-336-09