Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
-
[1]research packet 966-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (hull/name pairing confirmed).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-465-pkt-966-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-465 (ex-PCS-1433) - designation timeline, specifications, Soviet service, disposal (verified live 2026-10-04) [other_primary]
- Locator
- NavSource 11/19465.htm header designation line, chronology block, specifications block
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: 'Laid down 21 June 1943 as a Patrol Craft Sweeper, PCS-1433 by the Gibbs Gas Engine Co., Jacksonville, FL. Reclassified as an Auxiliary Motor Minesweeper, YMS-465, 27 September 1943. Launched 4 January 1944. Completed 17 June 1944. Transferred to the Soviet Union 8 May 1945 and reclassified T-187. Assigned to the Black Sea Fleet 4 August 1945. Placed out of service 7 April 1956 and laid up. Scrapped 28 January 1958.' 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 and two depth charge projectors; propulsion two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Call sign NQYT (Nan-Queen-Yoke-Tare). Page states 'There is no DANFS History currently available for YMS-465' and carries no photograph of the hull.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1958
- Population
- Gibbs construction trades (1943-44); U.S. Navy crew (1944-45); Soviet Navy crew (1945-58)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry; milestone dates generally track official records and here agree with the Russian-language record (sewar.ru) on every shared date. 'Transferred ... and reclassified T-187' compresses two events - the T-187 number was already assigned 25 October 1944, before the 8 May 1945 Soviet-crew acceptance (see ev-02). 'Scrapped' wording differs from the Russian record's 'struck for transfer to surplus-property department' - see ev-05 note. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-01
-
[3]sewar.ru (Soviet WWII weapons encyclopedia, citing Berezhnoi 'Korabli i suda VMF SSSR 1928-45' and Skorokhod), T-187 class-YMS page - Soviet-service record for ex-YMS-465 (verified live 2026-10-04) [other_primary]
- Locator
- sewar.ru tralschiki page 1391, T-187 chronology paragraph
- Finding type
- vessel_history
- Finding
- Soviet-side record for this hull (translated): 'Type YMS. T-187 (until 25.10.1944 YMS-465). Laid down 21.06.1943 (Jacksonville, USA), launched 4.01.1944, entered service 17.06.1944. 8.05.1945 accepted by a Soviet crew against lend-lease deliveries; 21.07.1945 arrived at Sevastopol and 4.08.1945 joined the ChF (Black Sea Fleet). 7.04.1956 withdrawn from the combat fleet and mothballed; 28.01.1958 removed from the Navy list for transfer to the surplus-property department.' The T-187 designation was thus reserved/assigned 25 October 1944, before the transfer itself - same pre-transfer assignment pattern as sister transfers (T-182/ex-YMS-457 on 19.10.1944).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1958
- Population
- Soviet Navy crew, Black Sea Fleet (1945-58)
- Limitations
- Russian-language secondary compilation citing the standard references (Berezhnoi 1988, Skorokhod 2003) - the strongest Soviet-service detail available but not a primary document. Every shared date agrees with NavSource. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-02
-
[4]uboat.net Allied Warships of WWII, USS YMS-465 (YMS-465) - order, construction, commissioning, transfer dates (verified live 2026-10-04) [other_primary]
- Locator
- uboat.net ship 9882 data block
- Finding type
- vessel_history
- Finding
- uboat.net data block for this hull: Navy - US Navy; type - minesweeper, class YMS; built by Gibbs Gas Engine Co. (Jacksonville, Florida, U.S.A.); ordered 16 November 1942; laid down 21 June 1943; launched 4 January 1944; commissioned 17 June 1944; end service 8 May 1945; history - 'Transferred to the USSR on 8 May 1945'; former name PCS-1433. No commanding officers listed; no wartime events filed for this hull.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1945
- Population
- U.S. Navy crew (1944-45)
- Limitations
- Volunteer secondary database; the 'ordered 16 Nov 1942' (the PCS-1376-class order date, shared by sister hulls) and 'commissioned' wording are its unique contributions - other sources record 'completed' rather than a formal commissioning. Unlike sister YMS-457 (31 Mar vs 31 May conflict), its 8 May 1945 transfer date agrees with both NavSource and the Russian record. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-03
-
[5]Shipbuilding History, Gibbs Gas Engine / Aerojet-General / Jacksonville Shipyards yard output table - YMS-465 delivery row and yard history (verified live 2026-10-04) [other_primary]
- Locator
- shipbuildinghistory.com Gibbs page, yard-history paragraph and 'PC 1432-1440' contract row + YMS 464-472 delivery rows
- Finding type
- vessel_history
- Finding
- Yard output table, Gibbs Gas Engine Works, Jacksonville FL (founded 1911 per this source - Metro Jacksonville says 1908; prolific builder of gas engines and small wooden and steel vessels in both World Wars; renamed Gibbs Corporation after WWII; sold to Aerojet-General Shipyards 1964, Fruehauf 1969, Terex 1989; yards closed 1992; site at the east end of Prudential Drive, Southbank riverfront). Contract row: 'PC 1432-1440 | US Navy | Sub Chaser | 245d | 136 | Completed as YMS 464-472 (see below)' - a nine-hull contract block completed as minesweepers. YMS-465 row: 'US Navy | Minesweeper | 320d | 136 | 17-Jun-44 | To the USSR 1945 as T-191, scrapped 1954.' Sister rows document the Gibbs sequence: YMS-464 (13-Jun-44), YMS-466 (4-Jul-44), YMS-467 (4-Aug-44, sold 1947 as Colbur), YMS-468 (31-Aug-44, to Turkey 1947 as Kusadasi M-514), YMS-469 (22-Sep-44, to USSR), YMS-470 (14-Oct-44, later Swan AMS-37/MSC(O)-37), YMS-471 (27-Oct-44, later Verdin AMS-38/MSC(O)-38), YMS-472 (10-Nov-44, lost 1945).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1944
- Population
- Gibbs construction trades (1943-44)
- Limitations
- Secondary yard-list compilation; confirms Gibbs construction and the 17-Jun-44 delivery/completion date - but its Soviet tail for this hull ('T-191, scrapped 1954') is wrong on both elements: T-191 was ex-YMS-456 (per the Russian-language record and the Black Sea T-187..T-192 roster) and this hull was struck 28 January 1958, not scrapped 1954 (see ev-02, ev-05). Same family of errors previously documented for its Greenport sisters' table. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-04
-
[6]Correction cross-check: NavSource 11/19465 (T-187) and PCS index /arkiv/12/01idx ('PCS-1433 ex-PC-1433 Reclassified YMS-465'); sewar.ru T-187 page (ex-YMS-465, Black Sea Fleet); kchf.ru Black Sea Fleet minesweeper list (T-187 Type YMS 1943-1958 within the T-187..T-192 six-hull group); forums.airbase.ru fleet-list post (T-187..T-192 = ex-YMS-465, 464, 453, 455, 456, 466, on Soviet lists from 25.10.44, ChF from 4.08.45); alerozin.narod.ru crossing account; shipbuildinghistory Gibbs row ('T-191, scrapped 1954'); Wikipedia Project Hula YMS transfer list (T-521..T-611 - cross-check only) [other_primary]
- Locator
- sewar.ru page 1391 (T-187); kchf.ru/eng/ship/minewarfare Black Sea list; forums.airbase.ru t65721 fleet-list post; NavSource /arkiv/12/01idx.htm PCS-1433 row; en.wikipedia.org/wiki/Project_Hula (cross-check)
- Finding type
- historical_record
- Finding
- CORRECTIONS carried: (1) Designation chain is PC-1433 (contract, NavSource index 'ex-PC-1433'; shipbuildinghistory contract row 'PC 1432-1440') -> PCS-1433 (laid down 21 June 1943) -> YMS-465 (reclassified 27 September 1943, before launch and completion) - she never served as PC-1433 or PCS-1433. (2) Soviet number is T-187, not the 'T-191' printed by shipbuildinghistory - T-191 was ex-YMS-456, a different hull that joined the Black Sea Fleet in the same division. The airbase fleet-list roster maps the twelve direct-transfer YMS hulls positionally: Baltic Fleet group T-181..T-186 = ex-YMS-447, -457, -460, -462, -448, -469 (on Soviet lists from 19.10.44, flags raised 10.04.45, ChF/Baltic from 28.06.45); Black Sea Fleet group T-187..T-192 = ex-YMS-465, -464, -453, -455, -456, -466 (on Soviet lists from 25.10.44, ChF from 4.08.45) - T-187=ex-YMS-465 is independently confirmed by the sewar.ru page title. (3) Disposal is 28 January 1958 (strike for transfer to surplus-property department), not shipbuildinghistory's 'scrapped 1954'. (4) This was NOT a Project Hula transfer: Hula was the Cold Bay, Alaska program whose YMS transfers ran 17 May-3 September 1945 as T-521 through T-611; T-187 is absent from that list - she was one of six YMS (T-187..T-192) sent to the Black Sea Fleet under a separate direct lend-lease allocation via the Atlantic and Mediterranean.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1958
- Limitations
- Corrects two circulating attribution errors and pins the designation chain and transfer program; rests on the Berezhnoi-lineage Russian sources plus the airbase fleet roster - consistent across NavSource, sewar.ru, and kchf.ru. The T-187 number's pre-transfer assignment date (25.10.1944) rests on the Russian-language record. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-05
-
[7]A. Rozin, 'Soviet Navy in the Mediterranean 1945-57' (alerozin.narod.ru Russian-language naval-history compilation) - T-187..T-192 division crossing account (verified live 2026-10-04) [other_primary]
- Locator
- alerozin.narod.ru MedSovietNavy45-57.htm, June-July 1945 lend-lease YMS passage paragraph
- Finding type
- historical_record
- Finding
- Crossing narrative for the six-YMS Black Sea division that included this hull (translated): 'In June-July 1945, six YMS-type base minesweepers received under lend-lease, Soviet numbers T-187 through T-192, made the passage from the USA through the Mediterranean to the Black Sea Fleet. In early May 1945 our sailors accepted six minesweepers from the Americans; on 10 June the Soviet naval flag was raised on the last minesweeper and on 11 June the minesweeper division began the passage to Sevastopol from the USA.' Division commander Captain 3rd Rank G.T. Karun; chief of staff Senior Lieutenant A.N. Motrokhov; minesweeper COs included G.N. Bibikov, Zhukov, Malyavko, Lopatko, Khomyakov. Route: departed New York 11 June 1945; storm damage to one boat three days out (written 'TShch-197' in the source - outside the T-187..T-192 range, likely a misprint) -> St. John's, Newfoundland (8 days in dock) -> Falmouth, England (4 days) -> Gibraltar (crews tasked to observe air defenses, radar, coastal batteries) -> Valletta, Malta (fuel and provisions) -> Sevastopol 21 July 1945 (Turkish authorities refused an Istanbul call).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945
- Population
- Soviet Navy crews of the six-hull division incl. this hull (May-July 1945)
- Limitations
- Russian-language secondary compilation (personal history site, Berezhnoi-lineage data) - not a primary document; it is the only located narrative of this division's Atlantic-Mediterranean crossing. It does not say which of the six hulls carried which Soviet number during the crossing, and its 'TShch-197' storm-damage label cannot be reconciled with the T-187..T-192 range - treated as a misprint, not evidence of a seventh boat. The month gap between Soviet-crew acceptance (8 May) and flag-raising/departure (10-11 June) is unexplained. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-06
-
[8]HyperWar/ibiblio transcription of NHHC 'Ships of the U.S. Navy, 1940-1945', minecraft section - YMS class description, class specification block, and hull index listing YMS-465 (verified live 2026-10-04) [other_primary]
- Locator
- ibiblio HyperWar ships-dm.html, 'YMS -- Motor Minesweepers' section (class narrative, spec block, hull table row 'YMS-465')
- Finding type
- historical_record
- Finding
- NHHC-derived minecraft index lists this hull ('YMS-465', 1942-5 group) and documents the class: 'The wood-hulled YMS proved to be one of the U.S. Navy's more durable and versatile types through a quarter-century of service...' Class spec block: displacement 320 tons (full); length 136'; beam 24'6"; draft 6'1"; speed 13 knots; armament 1 3"/50, 2 20mm, 2 depth charge tracks + 2 extensions, 2 depth charge projectors; complement 4 officers, 29 crew; diesel engines, twin screws, 500 h.p. Class note: the only significant variation was appearance - YMS-1 through 134 had two stacks, YMS-135 through 445, 480, and 481 had one, while YMS-446 through 479 had none (this hull is in the stack-less group, consistent with its PCS-derived design).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1969
- Population
- class-level
- Limitations
- Class-level specification block (320t full-load, 13-knot, 500-hp, 33-man complement) differs from the NavSource hull-page block (270t, 15 kts, 2x880bhp, 32) - both are carried, variance logged in gaps; neither is a hull survey. The index confirms the hull's existence and class assignment only - no per-hull history. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-07
-
[9]kchf.ru, Black Sea Fleet ship list (minewarfare section) - T-187 entry (verified live 2026-10-04) [other_primary]
- Locator
- kchf.ru/eng/ship/minewarfare, Black Sea Fleet minesweeper table, rows T-187 through T-192
- Finding type
- vessel_history
- Finding
- The Black Sea Fleet (ChF) official-history ship list carries the six lend-lease YMS hulls consecutively: 'T-187 | Type YMS | 1943-1958', 'T-188 | Type YMS | 1943-1958', 'T-189 (SBR-123) | 1943-1959', 'T-190 (SBR-124) | 1943-1958', 'T-191 | 1943-1958', 'T-192 (SBR-180) | 1943-1959'. T-187's 1943-1958 service span corroborates the Russian record's 28 January 1958 strike for this hull.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1958
- Population
- Soviet Navy crew, Black Sea Fleet (1945-58)
- Limitations
- Fleet-list corroboration only - a roster row, not a per-hull service record; it does not itself map T-187 to ex-YMS-465 (the mapping comes from sewar.ru and the airbase fleet roster). Service-span endpoints 1943 (laid-down year) and 1958 agree with sewar.ru. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-08
-
[10]Era inference built on: NavSource specifications (2 x GM 8-268A diesels, single reduction gear, twin shafts); NHHC-derived class description (wood-hulled YMS type); shipbuildinghistory yard history (Gibbs built both wooden and steel small vessels; the YMS hulls were wooden-hulled per the class description); GAO HRD-80-2 (see ev-10) [other_primary]
- Locator
- NavSource specifications block; NHHC-derived class narrative; GAO HRD-80-2 program context
- Finding type
- asbestos_application
- Finding
- A wood-hulled diesel minesweeper completed June 1944 sits inside the Navy's documented asbestos-use era; era-standard asbestos applications aboard a small diesel craft of this type and period were diesel exhaust lagging, gaskets, valve packing, and electrical insulation - with no steam plant, the boiler/turbine lagging pathway of steam vessels does not apply, and her wood hull carries a materially lighter outfit than steel steam-driven hulls. Asbestos aboard this hull is a reasonable era-consistent inference only.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1943-1958
- Population
- Gibbs construction trades (1943-44); U.S. Navy crew (1944-45); Soviet Navy crew (1945-58); Soviet disposal workers (1956-58)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for YMS-465. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull. Soviet-service-era refits/additions are undocumented.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-09
-
[11]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (full text blocked, HTTP 403)
- 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 U.S. construction and service period (1943-45).
- 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 - and a wooden-hulled 270-ton diesel sweeper had materially less asbestos-relevant plant than the steam combatants that dominate the GAO record. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403, confirmed this session per standing defect) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-10
-
[12]Batch-8351 search ledger (this record): NavSource hull page + YMS/PCS indexes; sewar.ru T-187; uboat.net; shipbuildinghistory Gibbs table; alerozin.narod.ru crossing account; kchf.ru Black Sea list; HyperWar/NHHC minecraft index; war-book.ru and airbase fleet rosters; NHHC/DANFS site search; NVR; NARA deck-log index; CourtListener (status in ledger); secondary web asbestos sweep; Metro Jacksonville Gibbs history; shipyards.json yard check [other_primary]
- Locator
- search_ledger rows sl-uss-yms-465-01 through sl-uss-yms-465-19
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming YMS-465 (PCS-1433 / PC-1433 / T-187) was found in the public sources searched (see search_ledger). CourtListener: all four prescribed base queries ran this session through the authenticated helper - 'USS YMS-465' opinion (1 hit, name collision), 'USS YMS-465' docket (573 tokenized hits, top-20 all unrelated), 'YMS-465' opinion (49 hits, top-20 all unrelated), 'YMS-465' docket (4,089 tokenized hits, top-20 all unrelated) - every sampled hit is a name collision, none names the vessel. A 'YMS-465 asbestos' web sweep surfaced no qualifying hit - not even the law-firm marketing listicles that typically cover Navy hulls (zero results returned).
- 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 - era inference remains plausible. Deck logs (Jun 1944-May 1945 U.S. service), BuShips construction records, and Soviet-era documentation are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-11
-
[13]National Archives, 'Navy Deck Logs Available in the National Archives Catalog' (digitized-log index) - YMS-465 absent; RG 24 deck logs undigitized; BuShips construction and Soviet-era records as further leads [other_primary]
- Locator
- NARA digitized deck-log index (live URL verified 2026-10-04); YMS-465 not listed
- Finding type
- historical_record
- Finding
- YMS-465 does not appear on NARA's published list of digitized Navy deck logs (the YMS hulls listed are only the later bird-named AMS/MSC(O) conversions). Archival leads not yet developed: (1) RG 24 deck logs for this hull's ~10.7 months of U.S. Navy service (17 Jun 1944 - 8 May 1945) - the only U.S.-service window and entirely undocumented in located sources; (2) Bureau of Ships contract/reclassification records for the PC-1432..1440 -> YMS-464..472 conversion block and the 27 September 1943 PCS->YMS reclassification order; (3) Soviet archival record of the New York acceptance, the flag-raising (10 Jun 1945), and Black Sea Fleet service (ChF records) - would document the transfer division organizationally.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1945 (log period)
- Population
- U.S. Navy crew (1944-45)
- Limitations
- Leads only - none of these record groups was retrieved this session; RG 24 P118-era deck logs are not publicly digitized. Their existence is inferred from standard record-keeping practice, not verified against a catalog entry. Deck logs would document operations, not necessarily materials content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-465-12