Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]research packet 1061-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-38-yms38-pkt-1061-packet-md
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[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-38 - build/milestone timeline, specifications, commanding-officer list, NARA-captioned photography; states 'There is no DANFS history available for YMS-38' [other_primary]
- Locator
- NavSource 11/19038.htm header block, specifications block, photo captions, commanding-officer table
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 2 May 1941 by Robert Jacob Inc., City Island, NY; launched 24 January 1942; completed 3 April 1942; call sign November-Bravo-Tango-India; transferred to the Soviet Union 19 July 1945 and reclassified T-593; assigned to the (Soviet) Pacific Fleet 30 July 1945; placed out of service 1 September 1955 and scrapped. Specifications: 270 t; 136'; beam 24'6"; draft 8'; 15 kts; complement 32; armament one 3"/50 dual-purpose mount, two 20mm mounts, two depth-charge projectors; propulsion two General Motors 8-268A diesels, Snow and Knobstedt reduction gear, two shafts. Photo captions (NARA 80-G-6577, 80-G-6583, 80-G-6591, 80-G-6609) place her at the Navy Mine School, Yorktown, VA, circa May 1942, documenting her Oropesa sweeping gear. Commanding officers listed: LT C. H. Thompson, Jr., USNR (1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1955
- Population
- Robert Jacob construction trades (1941-42); USN crew (1942-45); Soviet crew (1945-55)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates track official sources here (Russell NHC; NARA file unit) but 'Completed' vs 'Commissioned' wording for 3 April 1942 varies across sources (see gaps). Contains no asbestos content. No hazmat or material record for the 1955 Soviet scrapping was located.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-38-yms38-01
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[3]Russell, Richard A., Project HULA: Secret Soviet-American Cooperation in the War Against Japan (Naval Historical Center, Department of the Navy, Washington, 1997; U.S. Navy in the Modern World series no. 4; ISBN 0-945274-35-1) - official NHC monograph based on U.S. and Russian archival records, incl. transfer/disposition table pp. 39-40 [other_primary]
- Locator
- Project HULA monograph, transfer/disposition table pp. 39-40; program narrative pp. 12-33
- Finding type
- vessel_history
- Finding
- The monograph's transfer table names this hull: 'YMS38' -> 'T-593', transfer date 19 July (1945), disposition '1955-scrapped'. Program context: Project Hula transferred U.S. Navy vessels to the Soviet Pacific Fleet at Cold Bay, Alaska, after training Soviet crews there (some 12,000 trained; 149 ships delivered of 180 planned, including 36 wooden-hulled motor minesweepers of the YMS type); transferred YMSs performed 'a variety of combat, auxiliary, and scientific tasks' under Soviet colors and 'all were decommissioned by the mid-1950s.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-1955
- Population
- USN crew to July 1945; Soviet crew from transfer; Navy Detachment 3294 personnel at Cold Bay
- Limitations
- Authoritative on the transfer and Soviet designation (draws on Soviet archival sources unavailable during the Cold War) but does not state whether T-593 itself saw combat in August 1945 - Russian secondary sources claim Sea of Japan communications/base-defense service that month (unverified here; see gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-38-yms38-02
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[4]NARA Catalog file unit NAID 193216476, 'YMS-38, 4/7/42-7/18/45' - Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities (series NAID 594996), RG 24 Records of the Bureau of Naval Personnel; microfilm roll 8003; 300 digitized pages (Ancestry partnership scans); scanned pages read directly this session [other_primary]
- Locator
- NAID 193216476, digital objects 0002 (muster roll, Key West, June 1942), 0150 (report of changes, May 1943), 0250 (report of changes, Miami, May 1944), 0294 (recapitulation, quarter ending 1 Jul 1945), 0296 (report of changes, July 1945), roll 8003
- Finding type
- historical_record
- Finding
- The hull's own personnel records cover her entire U.S. career, 7 April 1942 - 18 July 1945. Scanned pages document: quarterly muster roll ending 30 June 1942 forwarded 1 July 1942 from Key West, Florida (CO Lt. E. E. Haase, USNR; XO Lt.(jg) Howard L. Rich Jr., USNR); May 1943 Report of Changes operating with Receiving Station Key West (CO Lt.(jg) E. A. McVey Jr., USNR); May 1944 Report of Changes dated on sailing from Miami, Florida (CO Lt.(jg) R. L. Garibaldi, USNR); July 1945 Report of Changes (received 2 August 1945) transferring the crew off on 2, 5, and 18 July 1945 to 'Commanding Officer, Navy 3294 FFT' - Navy Detachment 3294, the Project Hula unit - via 'R/S PSNY Bremerton, Washington. FURAS ComWesSeaFron'; quarterly recapitulation ending 1 July 1945: 22 brought forward, 15 gained, 37 total aboard during the quarter, 8 lost, 29 carried forward.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1945
- Population
- USN enlisted crew (~29-37 aboard, per quarterly recapitulation); Robert Jacob builders (pre-roll); Soviet crew post-19 July 1945
- Limitations
- Personnel/muster documentation - not a materials or asbestos record. Pages were sampled (opening, mid-war, and closing frames), not exhaustively read; the full 300-page reel may hold further operational detail. Coverage dates are muster-roll coverage, consistent with (and corroborating) the NARA Special List 44 logbook inventory entry cited in batch QA; the catalog places this file unit in the muster-rolls series, not the deck-logs series.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-38-yms38-03
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[5]Era inference built on: NavSource specifications block for this hull (wooden-hulled YMS-1 class; two GM 8-268A diesels, no steam plant); YMS-1-class published characteristics (270 t, 136', complement 32); GAO HRD-80-2 Navy asbestos-era documentation (see ev-05) [other_primary]
- Locator
- NavSource 11/19038.htm specifications; YMS-1 class published characteristics; GAO HRD-80-2 (ev-05)
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel motor minesweeper completed April 1942 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a small diesel combatant of this type and period were diesel exhaust lagging, machinery gaskets and valve packing, electrical insulation, and friction materials (winch/windlass and sweep-gear brake linings). As a diesel-driven wooden hull she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply, narrowing the plausible asbestos footprint relative to steam ships of the era.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1955
- Population
- Robert Jacob construction trades (1941-42); USN crew (1942-45); Soviet crew and scrappers (1945-55)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for YMS-38. 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-38-yms38-04
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[6]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 construction (1941-42) and U.S. service era (1942-45).
- 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. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403, re-confirmed 2026-10-04) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-38-yms38-05
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[7]Designation cross-check: Russell NHC Project Hula table pp. 39-40 (YMS-38 -> T-593); NavSource YMS-38 page (T-593); shipbuildinghistory.njscuba.net YMS index (T-593); vs. navalmarinearchive.com 'Robert Jacob Consolidated' yard table ('To the USSR 1945 as T-581, scrapped 1956') [other_primary]
- Locator
- Project HULA pp. 39-40; NavSource 11/19038.htm; navalmarinearchive.com/sbh/shipyards/yachtsmall/jacob.html row 'YMS 38'
- Finding type
- historical_record
- Finding
- CORRECTION (batch QA correction 2026-09-29 confirmed): a secondary shipyard table (navalmarinearchive.com, Robert Jacob yard list) attributes Soviet designation 'T-581' to this hull. The authoritative assignment is T-593: Russell's NHC monograph transfer table - built from U.S. and Soviet archival records - lists 'YMS38 -> T-593', and NavSource and shipbuildinghistory's own YMS index agree. T-581 is the outlier.
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-1956 (designation/disposition window)
- Limitations
- Corrects a circulating designation error, not a material claim. Disposition also differs across the same lineage ('scrapped 1956' in the yard table vs Russell/NavSource 1955 out of service and scrapped). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-38-yms38-06
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[8]Batch-9014 search ledger (this record): NavSource; NARA Catalog NAID 193216476 (300 scanned pages read in part); Russell NHC monograph; uboat.net; shipbuildinghistory + navalmarinearchive; Special List 44 (ACPL scanned edition); CourtListener (partial - see sl-07/08); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-38-yms38-01 through -15
- 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-38 (or Soviet T-593) was found in the public sources searched. CourtListener type=o 'USS YMS-38' returned 4 hits, all non-qualifying: United States v. Standard Oil Co. of New Jersey, 81 F. Supp. 183 (S.D.N.Y. 1948) concerns a 16 December 1942 collision involving sister sweeper YMS-12 - a different hull, and a collision/war-risk-insurance matter, not asbestos; the remaining hits are Texas appellate cases matching on unrelated docket strings. CourtListener type=r 'USS YMS-38' returned 2180 loosely-matched dockets; the top-20 reviewed contain no reference to YMS-38 or this hull. Secondary sweeps surfaced only law-firm marketing listicles - excluded sources.
- 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. Litigation search was partially completed this session - fleet-wide CourtListener pacing allowed 2 of 4 base queries through (name opinion + name docket); hull-number opinion and docket queries logged as blocked in search_ledger, not as negative results. Soviet-side disposal/materials records are outside accessible sources. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-38-yms38-07