Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
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[1]research packet 1057-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-352-yms352-pkt-1057-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-352 (11/19352) - construction timeline, specifications, disposal; states 'There is no DANFS History currently available for YMS-352' [other_primary]
- Locator
- NavSource 11/19352.htm header block, 'YMS-1 Class Auxiliary Motor Minesweeper' data block, specifications block, photo caption row
- Finding type
- vessel_history
- Finding
- Documented for this hull: YMS-1 Class Auxiliary Motor Minesweeper - laid down 12 January 1943 by the Gibbs Gas Engine Co., Jacksonville, FL; launched 14 May 1943; completed 21 October 1943; struck from the Naval Register 3 July 1946; 'Transferred to the War Shipping Administration 2 August 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 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. Call sign Nan-Queen-Uncle-William. NavSource states explicitly that no DANFS history exists for this hull. Page also captions NHHC photo NH 84983: the hull in San Francisco Bay, c. 1945 (courtesy Donald M. McPherson, 1976).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Population
- Gibbs construction trades (1942-43); crew (1943-46)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track Navy records but are not independently verified against NVR (disposed 1947, pre-NVR era). Contains no asbestos content. 'Completed' vs 'commissioned' wording differs from uboat.net for the same 21 Oct 1943 date. Page verified live 2026-10-04 (navsource.net - .org domain is dead).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-01
-
[3]uboat.net Allied Warships of WWII, USS YMS-352 (YMS-352), ship 9771 - builder, milestones, and the 26 January 1945 LST return convoy No. 3 event record [other_primary]
- Locator
- uboat.net ship page 9771 - data table and 'LST return convoy No.3' event narrative (26 Jan 1945)
- Finding type
- vessel_history
- Finding
- uboat.net record for this hull: built by Gibbs Gas Engine Co. (Jacksonville, Florida); ordered 13 April 1942; laid down 12 January 1943; launched 14 May 1943; commissioned 21 October 1943; stricken 3 July 1946; sold 2 August 1947. Event record places YMS-352, Lt. N.C. Tomson USNR commanding, in 'LST return convoy No. 3' departing Cawsand Bay (Plymouth) 26 January 1945 - ten LSTs (LST-1, -16, -72, -73, -309, -377, -378, -379, -522, -980), seven YMS (YMS-346, -348, -349, -351, -352, -356, -375), and Norwegian tanker Chr. Th. Boe, escorted initially by USS Gillette and USS Henry R. Kenyon with 'Force 26' destroyers. On 9 February all seven YMS fuelled from Chr. Th. Boe; the Norfolk section (all LSTs plus YMS-349 and YMS-375) parted company 17 February; the New York section arrived 18 February 1945.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Population
- crew under Lt. N.C. Tomson, USNR (Jan-Feb 1945)
- Limitations
- uboat.net is a respected secondary warship-history database (Guðmundur Helgason), not a primary registry - event detail is compiled from published war diaries/records, so convoy detail is secondary-verified only. Contains no asbestos content. Documents presence at Plymouth in January 1945 and return to the United States by 18 February 1945 - consistent with the E5 Normandy credit and the 1944-45 deck-log window.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-02
-
[4]Annex 'L' to Operation Plan No. 2-44, Serial 00144 - Communication Plan (ONCOWEST), 3 May 1944 (HyperWar transcription of the wartime NEPTUNE operation-plan annex) [other_primary]
- Locator
- OpPlan-2-44-L.html, section '4. Call Signs - Alphabetically - by Call Signs', Sheet 5 of the annex (call sign 4B6 = YMS 352)
- Finding type
- vessel_history
- Finding
- The Operation Neptune communication plan (Annex L to Op Plan 2-44, dated 3 May 1944) assigns call sign 4B6 to YMS 352 in the alphabetical-by-call-sign table - naming this hull in the invasion order of battle's communications assignments alongside the other Gibbs-built YMS hulls that returned to the United States together in January 1945 (YMS-346 1B7, YMS-348 1B6, YMS-349 2B6, YMS-350 3B3, YMS-351 3B9, YMS-356 5B4, YMS-375 7B5).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944 (plan dated 3 May 1944; operation June 1944)
- Population
- crew (June 1944 assault/clearance period)
- Limitations
- Ship-specific presence in the operation plan's call-sign table - corroborates the NAVPERS E5 Normandy participation credit but does not itself state which beach/force or which sweep assignment this hull drew (Annex L is a communications annex, not the task-organization annex). HyperWar is a transcription of the wartime document; transcription fidelity is high but the source document's Sheet 1-3 are missing per the HyperWar editor's note (the call-sign table itself, Sheet 5, is intact). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-03
-
[5]Navy and Marine Corps Awards Manual, NAVPERS 15,790 (Rev. 1953), WWII ship operation/engagement credits - YMS 352 entries (transcription at officialmilitaryribbons.com; underlying scan independently OCR-checked this session) [other_primary]
- Locator
- officialmilitaryribbons.com YMS 207-361 transcription, 'YMS 352:' block; NAVPERS 15,790 scan PDF p. 83 (verified via pdftoppm/tesseract OCR, 2026-10-04); code definitions on the same site's Asiatic-Pacific code page (P207 = Minesweeping Operations Pacific; P207-9 = Kobe, Honshu Area, 28 Nov 45 - 9 Mar 46)
- Finding type
- historical_record
- Finding
- NAVPERS 15,790 credits YMS 352 with two WWII operation entries: (1) E5 - Invasion of Normandy (including bombardment of Cherbourg), 6 Jun 44 - 25 Jun 44; (2) P207-9 - Kobe (Honshu Area), 28 Nov 45 - 2 Mar 46, under 'Minesweeping Operations Pacific' (one star for participation in one or more of the 23 Jun 45 - 2 Mar 46 post-surrender Japanese-waters sweeps; P207-9's listed window is 28 Nov 45 - 9 Mar 46). Transcription verified against the scanned NAVPERS page by direct OCR this session (49 MB image PDF, page 83 - the YMS-352 block appears between YMS 351 and YMS 353 entries with '6Jun 44-25 Jun 44..E5' and '28 Nov 45-2 Mar 46..P207-9').
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1946
- Population
- crew (Normandy window Jun 1944; Kobe window Nov 1945 - Mar 1946)
- Limitations
- Official award record but a manual, not an operational log: NAVPERS 15,790 (1953) is known to contain errors and omissions - a 1953 BuPers memo (HyperWar, 'Changes to Navy and Marine Corps Awards Manual - 1953') documented 414 apparent errors/omissions for Leyte/Lingayen alone and recommended a full manual check. The E5 window is a campaign window (6 Jun - 25 Jun 44), not proof of presence on every day in it. Post-surrender minesweeping was credited as operation participation even though performed after 2 Sep 1945. Kobe dates 28 Nov 45 - 2 Mar 46 fall within the P207-9 operation window (through 9 Mar 46). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-04
-
[6]NARA Special List 44 - List of Logbooks of US Navy Ships, Stations, and Miscellaneous Units, 1801-1947, ship-number edition (RG 24, Entry 118; NAID 581208) [other_primary]
- Locator
- sl-44-ship-number.pdf, PDF page 119 - 'YMS-352' row: 7/1/1944 - 6/30/1945 (verified via pdftotext -layout extraction this session); NARA 'Navy Deck Logs Available in the National Archives Catalog' page (absence of YMS-352 from the digitized list)
- Finding type
- historical_record
- Finding
- The National Archives inventories deck logs for YMS-352 covering 1 July 1944 through 30 June 1945 - the window spanning the Normandy clearance period, the remainder of European-theater service, the January-February 1945 return convoy, and the start of the post-return period. Logs are physical holdings in RG 24 Entry 118 (Logbooks of US Navy Ships and Stations); they are not among the digitized deck logs posted to the National Archives Catalog (YMS-352 is absent from NARA's online deck-log list).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-07-01 to 1945-06-30
- Population
- crew (1944-1945)
- Limitations
- Archival lead only: the inventory establishes that logs exist and their date span - it does not establish day-level positions, and the logs themselves are undigitized (College Park pull or reproduction order required). The window opens 1 July 1944 - after D-Day itself - so June 1944 positions are not covered by this holding's listed span. No asbestos content in the inventory.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-05
-
[7]U.S. Naval Institute Photo Archives, image 439546 - 'U.S. Navy Motor Minesweeper YMS-352, no date'; plus NHHC photo NH 84983 (San Francisco Bay, c. 1945) captioned via NavSource [other_primary]
- Locator
- photos.usni.org/content/439546jpg (verified live 2026-10-04); NavSource 11/19352.htm photo-caption row (NH 84983)
- Finding type
- historical_record
- Finding
- Two archival photographs document this hull: USNI Photo Archive item 439546 ('U.S. Navy Motor Minesweeper YMS-352, no date', Mildred M. Mario Photo Archive Room, USNI Headquarters, Annapolis) and NHHC photo NH 84983 showing the hull in San Francisco Bay circa 1945 (captioned on the NavSource page, credited to Donald M. McPherson, 1976). The San Francisco Bay dating is consistent with Pacific staging before the credited Kobe-area minesweeping deployment.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- circa 1943-1946
- Limitations
- Archival leads only: photographs establish the hull's appearance and (for NH 84983) a circa-1945 San Francisco Bay presence - they are not work, material, or condition records. USNI photo is undated. NH 84983 metadata is as captioned by NavSource; the NHHC online photo catalog is JS-rendered and was not independently fetched. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-06
-
[8]NavSource Auxiliary Motor Minesweeper (YMS) index - class description; Gibbs yard table at shipbuildinghistory.com (shipyards/small/gibbs.htm) hull list [other_primary]
- Locator
- navsource.net/archives/11/19idx.htm class narrative; shipbuildinghistory.com/shipyards/small/gibbs.htm 'Built by Gibbs Gas Engine Works' table, YMS 352 row
- Finding type
- vessel_history
- Finding
- Class context: the YMS type was a wooden-hulled auxiliary motor minesweeper - 561 built across 35 yacht and small-craft yards (12 East Coast, 19 West Coast, 4 Great Lakes); hulls YMS-135 through YMS-445 (plus 480-481) carried the single-stack configuration that includes YMS-352. Used for inshore sweeping in support of amphibious assaults; survivors were reclassified AMS and named in 1947 (too late for this hull, already stricken). The Gibbs Gas Engine Works yard list at shipbuildinghistory.com places YMS 352 in a US-Navy minesweeper block (YMS 346-357 delivered Aug-Dec 1943, 320d tons, 136 ft), delivery 21-Oct-43, disposition 'Sold 1947'.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1942-1946
- Population
- Gibbs yard workforce (1942-43)
- Limitations
- Class/era background and builder-table corroboration only. NavSource/shipbuildinghistory are volunteer/industry-compiled secondary sources; 561-built figure is the type total (481 completed YMS-numbered plus BYMS variants is the more conservative count in the same source's own text - count inconsistency noted in the source itself: '561 built' vs '481 ships of this type'). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-07
-
[9]National WWII Museum, Joshua Schick, 'The First Ships of Operation Neptune' (4 June 2021) - Neptune minesweeping-force context, with NHHC-captioned photography [museum_official]
- Locator
- nationalww2museum.org/war/articles/d-day-minesweepers (verified live 2026-10-04); guedryfamily.guedry.org/history/joseph_guidrey_usnr.html (YMS-378 Squadron Y memoir - secondary)
- Finding type
- historical_record
- Finding
- The Neptune plan relied on a force of over 300 minesweepers to clear 10 channels from England to France against moored contact mines and bottom mines (magnetic, acoustic, pressure, some with ship counters). YMS-type sweeps trailed LL magnetic gear - demagnetized sweeps towing two electric cables producing a pulsing field to detonate magnetic mines (NHHC-captioned photo in the article). Mine Squadron 7's assault-channel sweep off Utah began ~0630 on 5 June 1944; losses to mines included USS Osprey (AM-56) 5 June, USS Tide (AM-125) 7 June; by campaign's end over 800 mines were swept from the Bay of the Seine. The memoir record of YMS-378's CO (Lt. Joseph Guidrey, USNR, via guedryfamily.guedry.org/shipsproject.org) describes the Plymouth-based 11-YMS 'Squadron Y' of Assault Force U - sweep/buoy the assault channel from 10 miles out to 2 miles offshore, the fire-support channel, and transport areas.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1944-06
- Population
- Neptune minesweeping-force crews, June-July 1944
- Limitations
- Class/era context only: the article covers the minesweeping force and AM-type Mine Squadron 7 specifically; it does not name YMS-352. The Squadron Y memoir describes unit practice for a Plymouth-based YMS squadron but likewise does not name YMS-352 - no source located assigns this hull to a named squadron or beach. Minesweeper losses/sister-hull losses (e.g., YMS-350 mined off Utah 2 July 1944) are context, not events of this hull. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-08
-
[10]Era inference built on: NavSource specs (two GM 8-268A diesels, single reduction gear, wooden-hulled YMS-1 class); Gibbs yard table (minesweeper, 320d, 136 ft); GAO HRD-80-2 Navy asbestos program context [other_primary]
- Locator
- NavSource specifications block; shipbuildinghistory Gibbs table; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A 1943-built wooden-hulled diesel minesweeper sits inside the Navy's documented asbestos-use era; era-standard applications aboard a small diesel craft of this period were diesel exhaust lagging, gaskets, valve packing, electrical insulation, and machinery insulation in the confined hull volume. As a diesel-driven wooden craft she carried no boilers or steam plant - the boiler/turbine lagging pathway of larger combatants does not apply, and total asbestos material scope is reduced relative to steam vessels; the small confined-hull exposure dynamic applies where material was present.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Population
- Gibbs construction trades (1942-43); crew (1943-46); WSA/purchaser post-sale handlers (1947)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for YMS-352. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull. Wooden hull construction reduces (does not eliminate) expected asbestos scope.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-09
-
[11]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 (1943) 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 this session (gao.gov product-page description used; gao.gov's standing automated-fetch block documented in Batch 01/98 reports).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-10
-
[12]CourtListener API v4 authenticated search, type=o, query "USS YMS-352" (limit 20) - via fleet helper cl-auth-search.py [court_record]
- Locator
- cl-auth-search.py stdout JSON, 2026-10-04 - 2 results, both txctapp14
- Finding type
- litigation_documented
- Finding
- CourtListener opinion search "USS YMS-352" (type=o) returned 2 hits, both name collisions: In re Albert Ortiz (Tex. App.-Houston [14th Dist.], filed 2015-01-06, docket 14-14-00979-CV, cluster 4262174) and Tyrone Berry v. State (Tex. App.-Houston [14th Dist.], filed 2015-02-20, docket 14-13-00844-CR, cluster 4273021) - the query string matches OCR noise in the scanned opinion PDFs, not the vessel. No qualifying asbestos litigation naming this hull located in the opinion index. REMAINING BASE QUERIES PENDING: fleet pacing budget (shared ~58/hr) was repeatedly exhausted mid-session; exact-name docket and hull-number opinion/docket queries are logged as blocked in the search ledger - not negative results.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- Pleading/allegation stage at most for any hit - and both hits are non-vessel name collisions, so no litigation finding of any kind for this hull. Docket repository and hull-number queries unrun this session (fleet pacing); litigation status is partly open, not a clean negative.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-11
-
[13]Batch-8984 search ledger (this record): NavSource ship page + class index; uboat.net; HyperWar NEPTUNE OpPlan 2-44 Annex L; NAVPERS 15,790 transcription + direct OCR of scanned manual; NARA Special List 44 PDF (p.119); USNI photo archive; shipbuildinghistory Gibbs table; National WWII Museum; CourtListener (partially run, remainder blocked); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-352-yms352-01 through -13
- 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-352 was found in the public sources searched. DANFS does not exist for this hull (NavSource statement). CourtListener was only partially searched (1 of 4 mandated base queries completed; fleet pacing blocked the remainder) - logged as blocked, not a negative result. Secondary web sweeps surfaced no qualifying case and no law-firm listicle specifically naming this hull.
- 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 - and the litigation repository search is a genuine open gap (3 of 4 queries unrun, throttled). Deck logs (RG 24 Entry 118, 7/1/44-6/30/45), BuShips work packages, and any 1947 WSA sale-condition records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-352-yms352-12