Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 1070-packet.md (5 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-438-yms438-pkt-1070-packet-md
-
[2]National Archives, Special List 44: List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947 (NARA, 1978), 'Ships by Signal Number Designation' T-Y section, typeset ship-number PDF [other_primary]
- Locator
- SL44 typeset ship-number PDF p. 121: 'YMS-438 10/26/1944 6/30/1945'
- Finding type
- historical_record
- Finding
- Special List 44 inventories US Navy deck logs for YMS-438 covering 10/26/1944 through 6/30/1945. The 10/26/1944 start matches the NavSource commissioning date (26 October 1944) exactly, independently corroborating it over the uboat.net 'Commissioned 25 Oct 1944' variant. The 6/30/1945 end is the standard SL44 inventory cutoff shared by most WWII hulls in this accession - it is not evidence that service ended then (she served to January 1947).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1945 (log coverage); inventory published 1978
- Population
- YMS-438 crew, 1944-1945 (log coverage period)
- Limitations
- This is an inventory entry, not the logs themselves: it establishes that logbooks exist (RG 24-era custody, NARA) but not their contents - stations, operations, personnel, or any aboard conditions are unread here. YMS-438 does not appear on NARA's digitized deck-log index (archives.gov navy-online page searched 2026-10-04 - only ~19 numbered YMS hulls are listed), so the logs are an undigitized archival lead only. Entry verified programmatically on p. 121 of the typeset ship-number PDF (pdftotext extraction): 'YMS-438 10/26/1944 6/30/1945'.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-01
-
[3]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-438 page (build/disposal chronology compiled from Navy Register data; post-Navy merchant registration chain; spec block) [other_primary]
- Locator
- YMS-438 chronology block, specifications block, Lynn Ann call-sign header, photo caption
- Finding type
- vessel_history
- Finding
- YMS-1 Class Auxiliary Motor Minesweeper (call sign Nan-Charlie-Dog-Queen): laid down 1 November 1943 by Robert Jacobs, Inc., City Island, NY; launched 7 July 1944; completed 25 October 1944; commissioned USS YMS-438, 26 October 1944 under the command of LTJG Philip C. Martin, USNR; decommissioned 1 January 1947; struck from the Naval Register 5 March 1947; transferred to the War Shipping Administration 27 May 1947. Post-Navy merchant chain: registered 1948 to Merton P. Soma of Mount Vernon, WA as the fishing boat Lynn Ann out of Seattle; registered 1949 to Trawler Lynn-Ann, Inc. of Anacortes, WA out of Bellingham; acquired 1954 by Beaufort By-Products of Beaufort, NC; registered 1956 by the Carteret Menhaden Co., Inc. of Beaufort as the fishing boat Lynn Ann; out of documentation in 1978; fate unknown. Spec block: displacement 270 t. (260 t. 1948); length 136' (127.1' 1948); beam 24' 6"; draft 8' (11.8' 1948); speed 15 kts.; complement 32 (12 in 1948); armament one 3"/50 dual purpose 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. Page states: 'There is no DANFS History currently available for YMS-438.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1978
- Population
- Robert Jacob construction trades (1943-44); YMS-438 crew (1944-47); merchant crews (1948-78)
- Limitations
- NavSource is a compiled secondary archive of official data, not the underlying registers; the builder name here ('Robert Jacobs, Inc.') conflicts with the yard-specialist spelling 'Robert Jacob, Inc.' used by shipbuildinghistory, uboat.net, and NavSource's own class-index photo caption (see gaps). Contains no asbestos information. Wartime stations between commissioning and the November 1945 Kobe window are not listed - operational service detail is undocumented in located sources except the official awards-manual eligibility listing (ev-04).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-02
-
[4]NHHC Photograph NH 79715 - 'USS YMS-438. In San Francisco Bay, 1945-1946. Courtesy of D.M. McPherson, 1974.' (Naval History and Heritage Command official photo catalog) [other_primary]
- Locator
- NHHC NH 79715 catalog entry (title, caption, credit lines)
- Finding type
- vessel_history
- Finding
- The official NHHC photographic record catalogs image NH 79715 of this hull 'In San Francisco Bay, 1945-1946' - placing the ship in San Francisco Bay during 1945-46, consistent with a Pacific transit between East Coast completion (October 1944) and the documented Kobe (Honshu) minesweeping window (28 Nov 1945 - 2 Mar 1946, ev-04). The same image appears on the NavSource page captioned 'c. 1945, San Francisco Bay, Passing under the Golden Gate bridge' (credited there to Robert Hurst).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-1946 (caption window)
- Population
- YMS-438 crew during Pacific transit window
- Limitations
- A cataloged photograph establishes presence in San Francisco Bay on an unstated date within 1945-46, not a station assignment or transit record - the '1945-1946' caption window brackets but does not date a passage. No asbestos content. NavSource and NHHC credit different donors for the image (Robert Hurst vs D.M. McPherson, 1974).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-03
-
[5]Department of the Navy, Navy and Marine Corps Awards Manual, NAVPERS 15,790 (Rev. 1953), Part IV 'List of Ships and Units eligible for Engagement Stars,' (A) United States Ships (HyperWar/ibiblio transcription); Part III operation list on Awards-IV-2-16.html [other_primary]
- Locator
- Awards Manual Part IV, (A) United States Ships, YMS block, printed p. ~140-141: 'YMS 438: 28 Nov 45 - 2 Mar 46, P207-9'; Part III P207 operations table: 'Kobe (Honshu Area) 28Nov45-9Mar46 P207-9'
- Finding type
- vessel_history
- Finding
- The official Navy awards manual lists this hull by name: 'YMS 438: 28 Nov 45 - 2 Mar 46, P207-9' - eligibility for an engagement star under operation P207-9, which the manual's Part III authorized-operations list defines as 'Kobe (Honshu Area) 28Nov45-9Mar46' within 'Minesweeping Operations Pacific.' This is an official ship-specific operational record: the ship performed post-surrender minesweeping service in the Kobe (Honshu) area from 28 November 1945 to 2 March 1946. Neighboring hulls in the same listing show distinct operation assignments (e.g., YMS 436: 20 Dec 45-2 Mar 46 P207-9; YMS 439: P207-10/P207-18), so the listing is hull-resolved, not a squadron-level carryover.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-1946 (eligibility window); manual published 1953
- Population
- YMS-438 crew during Kobe-area minesweeping (Nov 1945 - Mar 1946)
- Limitations
- Establishes official engagement-star eligibility for the named Kobe operation window - presence and participation in post-surrender minesweeping in that area - but not day-by-day stations or tasks within it. Eligibility windows are award determinations, not continuous presence proofs; the ship's actual in-area days are not broken out. No asbestos content. HyperWar/ibiblio is a faithful transcription mirror of the published Navy manual; the underlying document is NAVPERS 15,790 (Rev. 1953).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-04
-
[6]uboat.net Allied Warships, USS YMS-438 (YMS-438) page - build/disposal data table [other_primary]
- Locator
- uboat.net ship/9857 data table (Ordered/Laid down/Launched/Commissioned/History rows)
- Finding type
- vessel_history
- Finding
- uboat.net tabulates for this hull: built by Robert Jacob Inc. (City Island, New York); ordered 15 September 1943; laid down 1 November 1943; launched 7 July 1944; commissioned 25 October 1944; stricken 5 March 1947; sold 27 May 1947 - corroborating the NavSource chronology on all shared milestones except the one-day commissioning-date variant (25 vs 26 October; SL44's 10/26/1944 log start supports the NavSource date) and the 'sold' vs 'transferred to the War Shipping Administration' wording for the 27 May 1947 disposal.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1947
- Population
- Robert Jacob construction trades (1943-44); crew (1944-47)
- Limitations
- Secondary compilation; the 'ordered 15 Sep 1943' date rests on this source alone (not verified against a contract record - see gaps). 'Sold 27 May 1947' vs NavSource 'transferred to the War Shipping Administration 27 May 1947' is a wording, not date, distinction - WSA was the federal disposal agent. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-05
-
[7]shipbuildinghistory.com (Tim Colton), Robert Jacob Shipyard table, City Island NY - hull list [other_primary]
- Locator
- Robert Jacob Shipyard hull table, YMS-438 row and neighboring YMS rows
- Finding type
- vessel_history
- Finding
- The Robert Jacob Shipyard (City Island, NY) construction table lists 'YMS-438 | US Navy | minesweeper | 25 Oct 1944 | sold 1947' - the delivery/completion date matching NavSource's 'Completed 25 October 1944' and the disposal window matching 'sold 1947'. Same-yard sisters in the table include YMS-439 (delivered 18 Nov 1944, 'sold 1947 as La Ciencia, still afloat in Seattle WA'), YMS-440 (29 Dec 1944, sold 1947), YMS-441 (20 Feb 1945, reclassified 1947 as Pelican AMS-32), and the earlier PCS-1394/YMS-447 and PCS-1395/YMS-448 (both to the USSR 1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1944 (construction); 1947 (disposal)
- Population
- Robert Jacob Shipyard construction trades (1943-44)
- Limitations
- Yard-list record: documents the builder contract output (delivery date, disposal year), not construction materials or any asbestos content. The builder name is spelled 'Robert Jacob' here and at uboat.net vs 'Robert Jacobs' on the NavSource hull page (see gaps).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-06
-
[8]NavSource Online, Auxiliary Motor Minesweeper (YMS) index page - class description [other_primary]
- Locator
- YMS index class-description paragraphs; Robert Jacob yard photo caption
- Finding type
- vessel_history
- Finding
- The YMS type was a wood-hulled, diesel-powered inshore minesweeper designed by Henry B. Nevins, Inc. (YMS-1 laid down 4 March 1941 at City Island, NY); 561 were built at 35 yacht yards - 12 East Coast, 19 West Coast, 4 Great Lakes - with 481 completed. YMS-135 through YMS-445 (plus 480-481) were the single-stack variant, which includes YMS-438. Surviving YMSs still in naval service were reclassified AMS and given names in 1947; YMS-438, decommissioned 1 January 1947 and struck 5 March 1947, was not among them and received no AMS designation or name. The index page itself carries a July 1944 photograph of this hull's builder - 'the Robert Jacob Shipyard, City Island, NY' - showing YMS craft under construction.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1969
- Population
- YMS-class crews and builders, 1941-1969 (class context)
- Limitations
- Class-level design context only: establishes wood hull and diesel propulsion (no boilers, no steam piping - the dominant asbestos-lagging pathway of steam ships is absent by design), but documents no asbestos or insulation material content for the class or this hull. Does not establish presence or absence of residual asbestos components (gaskets, wiring, brake linings).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-07
-
[9]Era inference built on: NavSource YMS index class description (wood hull, diesel plant); GAO HRD-80-2 program documentation (ev-09); NavSource/uboat.net/shipbuildinghistory build records (Robert Jacob Inc., City Island, 1943-44) [other_primary]
- Locator
- NavSource YMS index class description; GAO HRD-80-2; NavSource 11/19438.htm; uboat.net ship/9857; shipbuildinghistory jacob page
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel yard minesweeper built 1943-44 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a small diesel craft of this type were diesel-exhaust lagging, machinery gaskets, valve packing, electrical insulation, and winch/windlass brake linings in confined below-deck spaces. As a diesel vessel she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply, and the wooden hull means no hull-insulation pathway of steel combatants; residual exposure pathways are machinery-space and maintenance-disturbance.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1943-1978
- Population
- Robert Jacob construction trades (1943-44); crew (1944-47); maintenance crews through merchant career (1948-78)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, construction specification, or work package located for YMS-438. 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-438-08
-
[10]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2
- 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 (1943-44), service era (1944-47), and disposal (1947).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1979
- Population
- Navy shipyard workers and ships' crews; 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 cited; the report's ship-level scope is program-wide).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-09
-
[11]Batch-9079 search ledger (this record): NARA Special List 44 + digitized-log index; NavSource (hull page + class index); NHHC photograph catalog; NAVPERS 15,790 awards manual (HyperWar); NHHC/DANFS; Naval Vessel Register; uboat.net; shipbuildinghistory yard coverage; NHHC Pacific Fleet organization roster; Wikipedia; CourtListener opinion and docket search [other_primary]
- Locator
- search_ledger rows sl-uss-yms-438-01 through sl-uss-yms-438-17
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or environmental assessment naming USS YMS-438 was found in the public sources searched; no DANFS entry exists (NavSource states none; NHHC DANFS URLs return 404); no NVR detail page exists (vessel stricken 1947, outside NVR coverage; SHIPDETAILS URL bounces to the NVR root); the deck logs themselves are undigitized; and the hull is absent from the 1 May 1945 Pacific Fleet organization roster (YMS 430-437 and YMS 440+ are listed - she had not yet joined the Pacific Fleet by that date). CourtListener: one of four base queries completed - 'USS YMS-438' opinion returned 2 hits, both non-qualifying name collisions (United States v. Standard Oil Co., S.D.N.Y. 1948, the YMS-12 collision admiralty case; Tyrone Berry v. State, Tex. App. 2015, an OCR-garbled criminal appeal with no vessel connection); the remaining three base queries stayed fleet-paced across ~60 min of spaced retries and are open gaps, not negative results (sl-15 through sl-17).
- 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 - WWII-era diesel auxiliaries still carried asbestos in some components (gaskets, electrical insulation, brake linings); it establishes only that nothing ship-specific is published. The litigation repository search is a genuine open gap (fleet-paced, not run). The hull left federal documentation in 1978 with no material or environmental survey in located records.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-438-10