USS YMS-309

Evidence

15 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-15).

1. [1]research packet 1050-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-309-yms309-pkt-1050-packet-md

2. [2]NavSource Online, Mine Warfare Vessel Photo Archive, YMS-309 - construction timeline, specifications, disposition (verified live 2026-10-04) [other_primary]

   Locator

   YMS-309 page header block, construction/disposition narrative, call-sign line, specifications block

   Finding type

   vessel_history

   Finding

   NavSource's live YMS-309 hull page identifies this vessel as a YMS-1-class auxiliary motor minesweeper: laid down 5 April 1943 by Henry B. Nevins, Inc., City Island, NY; launched 17 August 1943; completed 13 September 1943; 'Commissioned USS YMS-309 in February 1944 under the command of LT Edward J. Burke, USNR'; assigned to the Caribbean Sea Frontier (arrival given as 12 November 1944); decommissioned 16 May 1946 at Seattle, WA; struck from the Naval Register 5 June 1946; transferred to the War Shipping Administration January 1947; acquired 1962 by Russell N. Olson of Seattle for use as a fishing boat named Grain of Sand; out of documentation 1984; fate unknown. Call sign Nan-Peter-Queen-Queen. Specifications: 270 t., 136' length, 24'6" beam, 8' draft, 15 kts., complement 32, one 3"/50 dual-purpose mount, two 20mm mounts, two depth-charge projectors; two 880-bhp General Motors 8-268A diesel engines, Snow and Knobstedt single-reduction gear, two shafts. The page also carries the crew-submitted narrative 'Participated in the invasion of Okinawa. Swept mines on both the western and eastern side of Okinawa. After the war was ordered to Sasebo, Japan, in November 1945, to sweep for new type acoustic mines. Late November 1945 ordered to Inland Sea where she swept mines at Hiroshima channels and the naval harbor of Kure. Returned to Pearl Harbor in late December 1945.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-1984

   Population

   Nevins construction trades (1943); YMS-309 crew (1943-46); War Shipping Administration custodians; merchant owner/crew

   Limitations

   NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track Navy records, and its builder/milestone data here is corroborated by BuShips, uboat.net, and shipbuilding-history lists. The Okinawa narrative is crew-submitted (uboat.net carries the identical text sourced to 'Personal communication') and is contradicted by official records - see ev-06. 'Arrived 12 November 1944' conflicts with NARA war-diary associations placing the hull at NOB Trinidad from December 1943; the date likely reflects a within-frontier reassignment to the Aruba-Curacao sector (diary associations begin November 1944). The 'returned to Pearl Harbor late December 1945' line conflicts with the NAVPERS Kure-Hiroshima credit of 4-20 February 1946. Post-Navy registration as Grain of Sand rests on this page alone. No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-309-yms309-01

3. [3]National Archives, Special List #44, by Ship Numbers, PDF entry for YMS-309 [other_primary]

   Locator

   PDF page 118 of 137: row 'YMS-309 9/14/1943 3/31/1946' (verified against the live PDF, page-118 extraction, 910,106 bytes)

   Finding type

   historical_record

   Finding

   The National Archives Special List 44, by Ship Numbers, lists a YMS-309 deck-log coverage row: 14 September 1943 - 31 March 1946. The entry is an archival inventory of log coverage held by NARA; it does not assert commissioning or decommissioning dates, and the logs themselves were not retrieved or read.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-09-14 to 1946-03-31

   Population

   YMS-309 crew and Navy operational activity during the indexed log period

   Limitations

   This is a finding aid, not the deck-log text. The logs were not retrieved or read, and the index entry contains no asbestos, insulation, exposure, or individual-service finding. Per NARA's own asbestos research guide, deck logs provide no direct evidence of asbestos.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-309-yms309-02

4. [4]U.S. Bureau of Ships, Ships' Data, U.S. Naval Vessels, Vol. III: Auxiliary, District Craft and Unclassified Vessels, NAVSHIPS 250-012 (15 April 1945), Motor Mine Sweepers (YMS) allocation table [other_primary]

   Locator

   YMS allocation table, printed p. 540 (PDF p. 559): row 'YMS309 ... 136 0 ... 24 6 ... 1,000 ... do.' inside the Henry B. Nevins, Inc. builder block beginning at YMS-308 (verified against the live shipscribe.com PDF, 38,520,486 bytes)

   Finding type

   historical_record

   Finding

   The Bureau of Ships' official Ships' Data, U.S. Naval Vessels, Vol. III (NAVSHIPS 250-012, 15 April 1945) lists YMS-309 in its Motor Mine Sweepers (YMS) allocation table: official length 136 ft 0 in, breadth 24 ft 6 in, 1,000 shaft horsepower, diesel-reduction drive - built by Henry B. Nevins, Inc., appearing in the table's ditto-marked Nevins builder block (YMS-308 through YMS-312).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1945-04-15 (publication); 1943 (construction)

   Population

   Nevins construction trades (1943); YMS-309 crew

   Limitations

   Official BuShips reference data confirming builder, dimensions, and shaft horsepower for this hull; the table gives no material-content or insulation information and names no asbestos product. The shipscribe.com scan is a facsimile of the official publication (Stanford University Libraries copy digitized via the Google Books program).

   Atlas source

   true

   Evidence ID

   ev-uss-yms-309-yms309-03

5. [5]Department of the Navy, Navy and Marine Corps Awards Manual, NAVPERS 15,790 (Rev. 1953), Part IV eligible engagement stars and Part III operation-code table (verbatim HyperWar transcription) [other_primary]

   Locator

   Part IV ship list, 'YMS 309' entry; Part III code table 'Kure-Hiroshima (Honshu Area) 27 Oct 45 - 26 Feb 46 P207-10' (verified against live HTML table cells 2026-10-04)

   Finding type

   vessel_history

   Finding

   The Department of the Navy's Navy and Marine Corps Awards Manual (NAVPERS 15,790, Rev. 1953), Part IV 'List of Ships and Units Eligible for Engagement Stars,' credits YMS-309 with exactly one engagement-star entry: 'YMS 309: 4 Feb 46 - 20 Feb 46 P207-10.' The manual's Part III operation table defines P207-10 as Kure-Hiroshima (Honshu Area) minesweeping, operation window 27 October 1945 - 26 February 1946, Asiatic-Pacific area. This documents post-surrender mine-clearance participation in the Kure-Hiroshima area of the Inland Sea in February 1946. The manual lists no Okinawa-operation (P34-series) or other combat-operation star for this hull.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1946-02-04 to 1946-02-20

   Population

   YMS-309 crew during the credited February 1946 Kure-Hiroshima window

   Limitations

   Official awards-manual transcription hosted on HyperWar (ibiblio.org), a reputable mirror; the manual documents campaign participation eligibility, not day-to-day positions or any material/exposure condition. The absence of a P34-series Okinawa star is a fact about the manual's credit list for this hull - combined with the 1 May 1945 fleet-organization absence (ev-05) it leaves the secondary Okinawa claim unsupported (see ev-06). No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-309-yms309-04

6. [6]United States Pacific Fleet Organization, 1 May 1945 (NHHC publication; HyperWar transcription, ibiblio.org) [nhhc_danfs]

   Locator

   Minecraft/YMS rosters throughout document; no YMS-309 entry anywhere (~170 YMS hulls enumerated)

   Finding type

   vessel_history

   Finding

   The official United States Pacific Fleet Organization document dated 1 May 1945 (HyperWar transcription of the NHHC publication) does not list YMS-309 anywhere in its order of battle, while enumerating approximately 170 other YMS hulls under the minecraft sections (including adjacent-numbered hulls). The hull's absence from the enumerated Pacific roster is documented; the document does not state where the ship was assigned on that date.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1945-05-01

   Population

   YMS-309 crew (assignment context, May 1945)

   Limitations

   Absence from an enumerated fleet-organization roster is a fact about the document, not proof of the ship's location or status on that date - vessels under non-Pacific commands (including the Caribbean Sea Frontier, where NARA war-diary associations place this hull through mid-1945) would not appear. No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-309-yms309-05

7. [7]Cross-source discrepancy: NavSource 11/19309 and uboat.net ship/9729 (Okinawa narrative, 'Personal communication' source) vs NAVPERS 15,790 engagement-star list, U.S. Pacific Fleet Organization 1 May 1945, and NARA catalog war-diary associations [other_primary]

   Locator

   uboat.net ship/9729 'Notable events' block with 'Sources: 1. Personal communication'; NAVPERS Part IV 'YMS 309' entry; HyperWar PacFleet OOB; NARA catalog 'YMS-309' file-unit associations

   Finding type

   historical_record

   Finding

   CORRECTION: the secondary compilations carry an Okinawa-invasion claim for this hull - NavSource: 'Participated in the invasion of Okinawa. Swept mines on both the western and eastern side of Okinawa'; uboat.net carries the identical narrative with its source listed as 'Personal communication.' Official records searched do not corroborate it and several conflict with it: NAVPERS 15,790 credits this hull no Okinawa-operation (P34-series) engagement star - its sole credit is post-surrender P207-10 Kure-Hiroshima minesweeping in February 1946 (ev-04); the hull is absent from the 1 May 1945 Pacific Fleet organization (ev-05); and NARA catalog full-text associations place YMS-309 in Caribbean Sea Frontier commands through at least August 1945 (COMALLFOR Aruba-Curacao diaries through May 1945; NOB Trinidad Sector Group 04.6 diaries including 8/1-31/45; see ev-07). The Okinawa participation claim is unverified and contradicted; the post-surrender Japan minesweeping portion of the same narrative is corroborated by the official engagement-star credit.

   Verification

   partial

   Role

   correction

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1945

   Population

   YMS-309 crew (1945)

   Limitations

   Corrects a circulating service-history claim, not a material claim. The war-diary associations are full-text index matches - the individual pages naming YMS-309 were not read, so a brief 1945 Caribbean-to-Pacific transfer cannot be excluded outright; however, absence of any P34-series engagement credit in the official awards manual means the Okinawa-invasion claim rests solely on an unattributed personal-communication narrative and is not carried as fact in this record. No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-309-yms309-06

8. [8]National Archives Catalog: muster-roll file unit NAID 193031522 (RG 24, Roll 9099, 142 images online); war-diary and muster-roll full-text associations across RG 38 WWII War Diaries and RG 24 (search 'YMS-309', 153 file-unit results) [other_primary]

   Locator

   NARA catalog file unit NAID 193031522; full-text associations incl. NAIDs 78307100, 135983866, 136014090, 78276164, 78711985, 140030303, 77493143, 77585060, 140087758, 77667319, 190188103 (all catalog pages verified live 2026-10-04 via rendered search)

   Finding type

   historical_record

   Finding

   The National Archives catalogs a digitized RG 24 muster-roll file unit for this hull, 'YMS-309, 9/14/43-5/17/46' (NAID 193031522, Container Roll 9099, Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities, 142 images online) - wartime Navy service is documented from the day after completion through the day after decommissioning. The catalog's full-text index additionally associates the hull name with a coherent operational record: COM NY Group Eastern Sea Frontier (Sep-Oct 1943); NOB Key West (Oct-Nov 1943); NOB Guantanamo Bay and CINCLANT (Nov 1943); NOB Trinidad / Trinidad Sector Group 04.6-04.7 (Dec 1943 - Aug 1945); COMALLFOR Aruba-Curacao sector (Nov 1944 - May 1945); COMCARIBSEAFRON monthly diaries (1943-45); COM 11 (Sep-Oct 1945); COM 14 (Nov 1945); COM Administrative Command, Minecraft, Pacific Fleet (Nov-Dec 1945); COM Task Group 52.16 (Nov 30 1945 - Feb 28 1946); COMSERVDIV 104 (Jan 1946); and the RG 24 muster rolls of Commander, Sub Division 103, Boat Pool, Kure, Japan (6 Feb - 1 Mar 1946). This places the hull in Caribbean service 1943 - mid-1945, a Pacific transfer in late 1945, and post-surrender Japanese minesweeping - consistent with the NAVPERS engagement-star credit and inconsistent with a spring-1945 Okinawa deployment.

   Verification

   partial

   Role

   archival_lead

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-1946

   Population

   YMS-309 crew during NY/ESF shakedown (1943), Trinidad and Aruba-Curacao sectors (1943-45), Pacific transit and Japan minesweeping (1945-46)

   Limitations

   The muster-roll unit is verified (142 digitized images online; individual pages not transcribed or read - personnel records, no asbestos content per the NARA asbestos guide). The war-diary associations rest on the catalog's OCR full-text index; the individual diary pages naming YMS-309 were not read, so the context of each mention (assignment, transit, movement report) is unverified and the reconstructed itinerary is a documented lead, not a verified day-by-day record. NavSource's 'arrived Caribbean Sea Frontier 12 November 1944' conflicts with Trinidad diary associations from December 1943; the date plausibly reflects the within-frontier move to the Aruba-Curacao sector (its diary associations begin November 1944). No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-309-yms309-07

9. [9]National Archives Catalog: file unit 'YMS-309' NAID 175667551 (RG 19, Microfilm of Ship Engineering Drawings); file unit 'YMS-309' NAID 2762326 (RG 38, Material Inspection Reports and Related Documentation, Container 168) [other_primary]

   Locator

   NAID 175667551 and NAID 2762326 catalog pages (both 'Not Yet Available Online'; verified live 2026-10-04)

   Finding type

   historical_record

   Finding

   The NARA catalog holds two additional file units titled for this hull, both undigitized: 'YMS-309' (NAID 175667551), RG 19 Records of the Bureau of Ships, series Microfilm of Ship Engineering Drawings (compiled 1945-1955), Architectural and Engineering Drawings, unrestricted; and 'YMS-309' (NAID 2762326), RG 38 Records of the Office of the Chief of Naval Operations, series Material Inspection Reports and Related Documentation (compiled 1940-1978), Container 168, textual records, unrestricted. These are hull-level BuShips engineering drawings and CNO material-inspection documentation for YMS-309 - precisely the record classes NARA's asbestos research guide identifies as the pathway for hull-level material determination.

   Verification

   verified

   Role

   archival_lead

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-1955 (coverage of parent series)

   Population

   Nevins construction trades; YMS-309 crew; Board of Inspection and Survey / material-inspection personnel

   Limitations

   Cataloged existence only - neither unit is digitized and none of its contents were read; the engineering drawings and material-inspection records may or may not contain insulation/material schedules for this hull. Their existence is the strongest located lead toward hull-level material documentation; citing them does not establish asbestos aboard.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-309-yms309-08

10. [10]Library of Virginia, World War II Separation Notices: Navy - NAVPERS-553 Notice of Separation for Hyland T. Bonnewell, GM2c, serial 659 16 05 (FromThePage transcription, LVA Making History collection) [other_primary]

    Locator

    FromThePage work 1140040_008_115_001, transcribed 'Service Vessels and Stations' field (verified live via firecrawl 2026-10-04)

    Finding type

    historical_record

    Finding

    A primary personnel record places a named crew member aboard this hull: the Library of Virginia's World War II Separation Notices (Navy) collection holds the NAVPERS-553 Notice of Separation for Hyland Thomas Bonnewell, GM2c (Gunner's Mate 2nd Class, V6 USNR), serial 659 16 05. His 'Service Vessels and Stations' field reads: 'INSHORE PATROL, 5th N.D. NOB, NORVA.; AA TRNG AND TEST CENT., DAN NECK., VA.; USS YMS 309; USN PSC, SHELTON, VA.' He was separated honorably at USN PSC Shelton, VA on 6 October 1945. The assignment chain (5th Naval District inshore patrol, then the hull) is consistent with the East Coast-to-Caribbean operating footprint documented in the war-diary associations.

    Verification

    verified

    Role

    context

    Documentation level

    ship_specific

    Accessed

    2026-10-04

    Study period

    circa 1944-1945

    Population

    GM2c Hyland T. Bonnewell; YMS-309 crew (~1944-45)

    Limitations

    Vessel-history fact only: establishes one named individual served aboard circa 1944-45. NOT an exposure record - no asbestos claim for Bonnewell or any individual. Transcription by LVA volunteers; the underlying NAVPERS-553 form is the archival original.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-309-yms309-09

11. [11]Era inference built on: NavSource and BuShips specifications (2 x GM 8-268A diesels, reduction gear, 2 shafts, wooden hull); GAO HRD-80-2 era finding (ev-12); OSHA outfitting guidance (ev-11); NARA asbestos research guide archival pathway (ev-13) [other_primary]

    Locator

    NavSource specifications block; BuShips allocation table; OSHA out-fitting page; GAO product page; archives.gov guided-topic page

    Finding type

    asbestos_application

    Finding

    A diesel-driven wooden minesweeper completed in September 1943 at a commercial yacht yard sits inside the Navy's documented asbestos-use era; era-standard applications aboard a diesel yard craft of this period were engine exhaust and muffler lagging, compressed-asbestos sheet gaskets, valve and machinery packing, electrical insulation, brake linings, and insulation board in machinery and accommodation spaces. As a diesel vessel she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply; the wooden hull reduces but does not eliminate the era application set (machinery, exhaust, joiner/insulation, electrical).

    Verification

    inferred

    Role

    supporting

    Documentation level

    class_or_era

    Accessed

    2026-10-04

    Study period

    1943-1984

    Population

    Nevins construction trades (1943); crew (1943-46); any yard/base trades during availabilities; unknown post-Navy handlers (1947+)

    Limitations

    Class/era inference only - no hull-specific insulation survey, material list, work package, or plan was located for YMS-309. 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-309-yms309-10

12. [12]Occupational Safety and Health Administration, Shipbuilding and Ship Repair: Process - Outfitting [other_primary]

    Locator

    Outfitting page, asbestos paragraph under Description (verified live 2026-10-04 via firecrawl; automated reader returned HTTP 403)

    Finding type

    asbestos_application

    Finding

    OSHA's shipbuilding and ship-repair guidance for outfitting states that asbestos was used in two operations: '(1) insulating piping and exhaust manifolds; and, (2) fire-proofing (combined with other linings) for living and working areas,' and that severe exposures occur during repair when insulation is removed. This is relevant early-1940s shipbuilding context for a 1943 Navy minesweeper built at a commercial yacht yard.

    Verification

    verified

    Role

    context

    Documentation level

    class_or_era

    Accessed

    2026-10-04

    Study period

    1943-1947 (applicable build/service era)

    Population

    Shipbuilding outfitting and repair trades (era context)

    Limitations

    General shipyard guidance, not a YMS-309 record. It does not establish that any listed product was installed aboard this wooden-hulled minesweeper, does not establish quantity or condition, and does not establish an individual's exposure or causation.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-309-yms309-11

13. [13]U.S. Government Accountability Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979) [gao]

    Locator

    GAO product page HRD-80-2 (live page returned HTTP 403 to automated fetch; content verified via Wayback capture 2025-04-02, web.archive.org/web/20250402135701; 26-page full report PDF not retrieved)

    Finding type

    gov_survey

    Finding

    GAO's 1979 review of Navy efforts to protect workers from asbestos exposure documents that the Navy used asbestos insulation aboard ships, that its 1975 policy was to remove and replace with nonasbestos materials only insulation that was damaged or had to be removed for necessary repairs, and that the policy was modified in 1979 to include selectively replacing asbestos insulation in high-maintenance areas - spanning this hull's entire construction and service era.

    Verification

    verified

    Role

    context

    Documentation level

    class_or_era

    Accessed

    2026-10-04

    Study period

    1943-1979

    Population

    Navy shipyard workers and Navy vessels covered by the 1979 review

    Limitations

    Program-level Navy evidence, not a YMS-309 record. It supports era context only and does not prove installation, location, condition, disturbance, quantity, exposure, or causation aboard this hull. The full report PDF was not retrieved in this session; the finding asserts only the official product-page summary content.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-309-yms309-12

14. [14]National Archives, Researching Asbestos aboard US Naval Vessel up through 1961 [other_primary]

    Locator

    archives.gov guided-topic page: RG 19 correspondence/hull-filing instructions, Entry P 11 minesweeper general-information books, 'Other Records and their usefulness' deck-log/muster-roll paragraph (verified live 2026-10-04)

    Finding type

    regulatory

    Finding

    NARA's official research guide 'Researching Asbestos aboard US Naval Vessel up through 1961' identifies RG 19 Bureau of Ships records - general/confidential/secret correspondence filed by hull designation (this hull: 'YMS309'; class: 'YMS1 Class'; type correspondence as last resort), Ship/General Information Books including Entry P 11 Minesweeper and Minelayer General Information Books (1940-1962), shipbuilding-yard QM correspondence files, specification files, and engineering drawings - as the archival pathways for researching asbestos aboard U.S. Navy vessels. The guide states that Navy deck logs and muster rolls (RG 24) 'do not provide any information on the use of or presence of asbestos in Navy ships or ship components and therefore provide no direct evidence of asbestos.' These records are the appropriate next archival leads for YMS-309; of them, the cataloged hull-titled engineering-drawings (NAID 175667551) and material-inspection (NAID 2762326) file units located this session are the most direct, and neither is digitized.

    Verification

    verified

    Role

    archival_lead

    Documentation level

    context_only

    Accessed

    2026-10-04

    Study period

    1940-1962 (guide scope)

    Population

    U.S. Navy vessel material records, 1940-1962

    Limitations

    This row documents a research path, not the existence of asbestos aboard YMS-309. The guide does not substitute for retrieving the hull/class specifications, drawings, or correspondence, and it expressly prevents treating the Special List 44 deck-log entry or the muster rolls as asbestos evidence.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-309-yms309-13

15. [15]Batch-8936 source review: NavSource YMS-309; NARA Special List 44; BuShips Ships' Data Vol. III; NAVPERS 15,790; uboat.net; U.S. Pacific Fleet Organization 1 May 1945; NARA catalog (193031522, 175667551, 2762326, war-diary associations); LVA/FromThePage separation notice; NARA asbestos research guide; OSHA outfitting; GAO HRD-80-2; shipbuilding-history Nevins yard list; CourtListener (blocked) [other_primary]

    Locator

    Search ledger rows sl-uss-yms-309-yms309-01 through -15

    Finding type

    historical_record

    Finding

    No qualifying ship-specific asbestos record was located in the public sources searched for YMS-309: the NavSource hull page, NARA Special List 44, BuShips Ships' Data allocation table, NAVPERS 15,790 engagement-star list, uboat.net record, 1 May 1945 Pacific Fleet organization, NARA catalog file units (muster rolls, engineering drawings, material-inspection reports, war-diary associations), Library of Virginia separation notice, NARA asbestos research guide, OSHA outfitting guidance, and GAO Navy-wide review provide no YMS-309 asbestos survey, abatement contract, hazmat disclosure, material schedule, product identification, or adjudicated exposure finding. Ship-specific asbestos status is therefore unknown. CourtListener could not be queried this session (fleet-wide pacing budget spent) - logged as blocked in the search ledger, not as a negative result.

    Verification

    verified

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-10-04

    Study period

    2026-10-04

    Limitations

    A failure to locate a public record does not prove absence of asbestos aboard the hull - and the litigation repository search is a genuine open gap (pacing-blocked, not run). Undigitized RG 19 minesweeper general-information books, specification files, the hull-titled engineering drawings (NAID 175667551) and material-inspection reports (NAID 2762326), and the indexed 1943-46 deck logs remain open leads. This negative finding does not establish or defeat any exposure claim or legal eligibility.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-309-yms309-14