Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
-
[1]research packet 1069-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERDICT: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-428-yms428-pkt-1069-packet-md
-
[2]National Archives, Special List 44: List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947 (NARA), 'by Ship Numbers' volume - YMS-428 entry [other_primary]
- Locator
- sl-44-ship-number.pdf p. 121: 'YMS-428 | 1/24/1945 | 5/16/1945' (verified via pdftotext extraction); landing page https://www.archives.gov/research/military/logbooks/special-list-44-named
- Finding type
- historical_record
- Finding
- Special List 44 inventories US Navy deck logs for YMS-428 covering 1/24/1945 through 5/16/1945 - a span matching her entire U.S. Navy career (completed/commissioned 24 January 1945; transferred to the Soviet Union 17 May 1945 at Cold Bay). The log window ends the day before the documented transfer date, consistent with log closure at transfer.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945 (log coverage); inventory published 1978
- Population
- YMS-428 crew, January-May 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, or any aboard conditions are unread here. YMS-428 does not appear on NARA's digitized deck-log index (archives.gov navy-online page searched 2026-10-04), so the logs are an undigitized archival lead only. The dates are log coverage, not asserted commissioning/decommissioning dates.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-428-01
-
[3]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-428 page (build/transfer/Soviet-service chronology compiled from Navy Register and Soviet-disposition data) [other_primary]
- Locator
- YMS-428 chronology block and specifications block
- Finding type
- vessel_history
- Finding
- YMS-1 Class Auxiliary Motor Minesweeper: laid down 10 February 1944 by Mojean and Erickson, Tacoma, WA; launched 5 June 1944; completed 24 January 1945; transferred to the Soviet Union 17 May 1945 and reclassified T-525; assigned to the (Soviet) Pacific Fleet 5 June 1945; participated in the Kuril (Japan) landing operation 18 August - 1 September 1945; awarded the Order of the Red Banner 14 September 1945; placed out of service 15 April 1955 and laid up; scrapped 11 July 1956. Specifications: displacement 270 t.; length 136'; beam 24'6"; draft 8'; speed 15 kts.; complement 32; armament one 3"/50 dual purpose mount, two 20mm mounts, two depth charge projectors; propulsion two 880-bhp General Motors 8-268A diesels, Snow and Knobstedt single reduction gear, two shafts. Page states: 'There is no DANFS History currently available for YMS-428.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1956
- Population
- YMS-428 U.S. crew (Jan-May 1945); Soviet crew of T-525 (1945-1955)
- Limitations
- NavSource is a compiled secondary archive of official data, not the underlying registers; Soviet-side operational details (Kurils operation, Red Banner award) rest on NavSource's Soviet-disposition sourcing and are not independently verified against Soviet records. No U.S. commissioning line, decommissioning date, or U.S. Navy Register strike date is listed. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-428-02
-
[4]Richard A. Russell, 'Project Hula: Secret Soviet-American Cooperation in the War Against Japan' (Naval Historical Center, Washington DC, 1997; ISBN 0-945274-35-1), Appendix: U.S. Navy Combatant Ships Transferred [to the Soviet Navy], May-September 1945 - generalstaff.org transcription of the official Navy history publication [other_primary]
- Locator
- Appendix 'U.S. Navy Combatant Ships Transferred ... May-September 1945', YMS 428 row; program totals in main text (149 ships, 31 YMS)
- Finding type
- vessel_history
- Finding
- The official Naval Historical Center account of Project Hula documents this hull's transfer in its appendix of ships transferred to the Soviet Navy at Cold Bay: 'YMS 428 | T-525 | 17 May | 1956-stricken.' The book documents that Navy Detachment 3294 trained Soviet crews and transferred 149 ships at Cold Bay, Territory of Alaska, between May and September 1945 - including 31 auxiliary motor minesweepers (YMS). The 17 May 1945 date matches the day after this hull's deck-log coverage ends (5/16/1945, per SL44).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945 (transfer); disposition tracked to 1956
- Population
- YMS-428 U.S. crew and Soviet receiving crew at Cold Bay, May 1945
- Limitations
- The appendix documents transfer date, Soviet designation, and Soviet-side stricken year - it does not give a U.S. Navy Register strike date or decommissioning detail for this hull. The cited edition is a transcription of the Naval Historical Center publication hosted on generalstaff.org (a third-party mirror), not the NHC's own site; the page serves content to browser-class fetchers but returns HTTP 403 to curl - text verified live via firecrawl extraction 2026-10-04. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-428-03
-
[5]NavSource Online, Auxiliary Motor Minesweeper (YMS) index page - class description [other_primary]
- Locator
- YMS index class-description paragraphs
- Finding type
- vessel_history
- Finding
- The YMS type was a wood-hulled, diesel-powered inshore minesweeper designed by Henry B. Nevins, Inc.; 561 were built at 35 yacht yards (not major shipyards) - 12 East Coast, 19 West Coast, 4 Great Lakes. YMS-135 through YMS-445 (plus 480-481) were the single-stack variant, which includes YMS-428. Surviving YMSs still in U.S. naval service were reclassified AMS and named in 1947 - YMS-428, transferred to the USSR in May 1945, was not among them and received no AMS designation or name.
- 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-428-04
-
[6]shipbuildinghistory.com (Tim Colton), Mojean & Ericson yard table, Tacoma WA [other_primary]
- Locator
- Mojean & Ericson yard table, YMS 428 row
- Finding type
- historical_record
- Finding
- The builder's hull table lists YMS 428 as type 'Minesweeper,' 278d tons, 136 ft, delivered 24-Jan-45, disposition 'To the USSR 1945 as T-525' - confirming builder, delivery, and the Soviet transfer. The yard (Mojean & Ericson, founded 1925 by William Mojean and Olaf Ericson, closed at the end of WWII, on East D Street at the inland end of the Thea Foss Waterway, Tacoma) also built YMS 222-225, PCS 1455-1456 (PCS 1456 completed as YMS 479), YMS 426, 427, and 429 for the Navy.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1945
- Population
- Mojean & Ericson construction trades, 1944-1945
- Limitations
- Compiler's table, not the underlying contract or registry; consistent with NavSource and the Russell appendix on delivery and transfer. The firm name is spelled 'Ericson' here and 'Erickson' on NavSource (see gaps). Contains no asbestos information; establishes builder, delivery date, and disposition only.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-428-05
-
[7]uboat.net Allied Warships, USS YMS-428 (YMS-428) data block [other_primary]
- Locator
- YMS-428 data block, ship 9847
- Finding type
- vessel_history
- Finding
- uboat.net carries this hull as: built by Mojean and Ericson Shipbuilding Corp. (Tacoma, Washington); ordered 21 July 1943; laid down 10 February 1944; launched 5 June 1944; commissioned 24 January 1945; end of service 17 May 1945; 'Transferred to the USSR on 17 May 1945.' No commanding officers are listed.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1945
- Limitations
- Secondary compiled database. Its 'commissioned 24 January 1945' is the completion date NavSource lists without a commissioning label - the distinction between completion and commissioning for this hull is unarbitrated (no DANFS entry; see gaps). Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-428-06
-
[8]Batch-9068 search ledger (this record): NARA Special List 44 + digitized-log index; NavSource (hull page + class index); NHHC/DANFS; Naval Vessel Register; shipbuildinghistory yard table; uboat.net; Russell 'Project Hula' (NHC 1997) transfer appendix; CourtListener opinion and docket search [other_primary]
- Locator
- search_ledger rows sl-uss-yms-428-01 through sl-uss-yms-428-13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located in the public sources searched: no DANFS entry exists (NavSource states none), no NVR detail page exists (SHIPDETAILS URL redirects to the NVR portal - vessel left U.S. custody 1945, outside NVR coverage), and no asbestos survey/abatement/hazmat record exists for the hull. CAVEAT: CourtListener could not be queried this session - all four base queries were deferred by the fleet pacing budget (shared ~58/hr limiter saturated by concurrent sessions; retried at intervals over ~25 minutes without success) and are logged as pending, NOT as a negative result. Secondary web sweeps surfaced no qualifying case.
- 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 in the sources searched. The litigation repository search is a genuine open gap (paced, not run). The hull was scrapped in Soviet hands in 1956, so no U.S.-side disposal documentation exists.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-428-07