Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
-
[1]research packet 1045-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-275-yms275-pkt-1045-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-275 (11/19275) - construction timeline, specifications, casualty and disposal dates, commanding officers [other_primary]
- Locator
- NavSource 11/19275.htm header block, specifications block, commanding-officers table
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull (call sign Nan-Fox-Vice-Jig): laid down 6 November 1942 by the Bellingham Marine Railway and Boat Building Co., Bellingham, WA; launched 4 February 1943; completed 20 August 1943; damaged by a mine 25 February 1945 off Peleliu, Palaus Islands; 'sunk in typhoon Louise off Okinawa 9 October 1945'; hulk destroyed December 1945; struck from the Naval Register 3 January 1946. Spec block: displacement 270 t; length 136'; beam 23'4"; draft 8'7"; speed 14 kts; complement 60; armament one 3"/50 DP mount, two 20mm mounts, two depth-charge tracks, two depth-charge projectors; propulsion two 800 bhp General Motors 8-268A diesels, Snow and Knobstedt single reduction gear, two shafts. Commanding officers listed: LT J. P. Wilkowski, USNR (1945) and LTJG R. M. Dorsey, USNR (1945). Page states 'There is no DANFS History currently available for YMS-275.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1946
- Population
- Bellingham yard construction trades (1942-43); crew (1943-45)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates generally track official records and are corroborated here by NHHC and NARA rows, but spec figures (complement 60, 800 bhp engines) conflict with secondary class references (32, lower bhp) and no primary spec sheet was located. 'Sunk' summarizes the NHHC disposition 'grounded - beyond economical repair; strip, abandonment.' Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-275-01
-
[3]DANFS, Argonne II (AP-4) - Kossol Roads depth-charge explosion naming YMS-275 alongside (updated Robert J. Cressman, 18 May 2020; verified live) [nhhc_danfs]
- Locator
- DANFS Argonne (AP-4) service narrative, Kossol Roads paragraph
- Finding type
- vessel_history
- Finding
- DANFS's Argonne entry places this hull physically alongside the fleet repair flagship at Kossol Roads, Palaus: 'While anchored in berth 74, Kossol Roads, the ship again suffered damage at the hands of friendly ships. YMS-275 lay alongside to the port side, aft; YMS-38 and SC-702 to the port side, forward.' An LCVP fouled its ramp in SC-702's depth-charge rack and wrenched loose a 300-pound depth charge; the underwater explosion 'lifted Argonne bodily several inches' and jarred two more charges loose (which did not explode). Window: after Argonne's arrival at Kossol Passage 15 December 1944 and before her departure for Leyte 11 February 1945.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-12-15 to 1945-02-11
- Population
- YMS-275 crew; Argonne crew; SC-702, YMS-38 crews (Dec 1944 - Feb 1945)
- Limitations
- Ship-specific presence and incident documentation only: establishes YMS-275 moored alongside Argonne at Kossol Roads during the Dec 1944 - Feb 1945 window and present at a documented accidental depth-charge detonation; does not state whether YMS-275 itself sustained damage in that explosion. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-275-02
-
[4]Robert J. Cressman, The Official Chronology of the U.S. Navy in World War II - 1945 (NHHC-published official chronology; HyperWar/ibiblio verbatim transcription; verified live) [nhhc_danfs]
- Locator
- USN-Chron-1945.html, 25 February 1945 entry
- Finding type
- vessel_history
- Finding
- Official-chronology casualty entry under '25 February, Sun.': 'Motor minesweeper YMS-275 is damaged by mine off the Carolines, 07°20'N, 134°35'E.' The coordinates place the event in the Peleliu/Palau area, matching NavSource's 'damaged by a mine 25 February 1945 off Peleliu, Palaus Islands.'
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-02-25
- Population
- YMS-275 crew (Feb 1945)
- Limitations
- Ship-specific event documentation (date, cause, coordinates) but not a damage-assessment record - extent of damage, casualties, and repair disposition are not stated. Cited from the HyperWar/ibiblio verbatim transcription of the NHHC-published chronology; the transcription is the accessible form. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-275-03
-
[5]NHHC, United States Pacific Fleet Organization, 1 May 1945 - Minecraft, Pacific Fleet roster (Commander Minecraft R. Adm. A. Sharp; within Service Force, Pacific Fleet, V. Adm. W. W. Smith); verified live [other_primary]
- Locator
- PacFleet org page, Minecraft Pacific Fleet section, YMS block (transcribed p. 134-135 region)
- Finding type
- vessel_history
- Finding
- The official 1 May 1945 Pacific Fleet organization roster lists 'YMS 275' among the Minecraft, Pacific Fleet craft, with officers 'Lt. J. P. Wilkowski (USNR) (D)' and 'Lt. (jg) R. M. Dorsey (USNR) (R)' - matching NavSource's commanding-officer entries for 1945. Establishes the hull remained on the active fleet roster after its February mine damage and through the Okinawa campaign period.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-05-01
- Population
- YMS-275 crew (May 1945)
- Limitations
- Roster presence only - establishes administrative fleet assignment and officer names as of 1 May 1945; the (D)/(R) annotations' meaning is not stated on the page and is not interpreted here. The roster lists YMS hulls in a consolidated block; a specific mine division assignment for YMS-275 is not identified. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-275-04
-
[6]NHHC, 'Typhoons and Hurricanes: Pacific Typhoon at Okinawa, October 1945' - extract from Commander in Chief, Pacific Fleet and Pacific Ocean Areas report on the Surrender and Occupation of Japan, incl. Appendix III casualty table (verified live) [other_primary]
- Locator
- NHHC Pacific Typhoon October 1945 page, Appendix III casualty table, YMS 275 row
- Finding type
- vessel_history
- Finding
- The official CINCPOA report extract documents Typhoon 'Louise' striking Okinawa 9 October 1945 with 80-knot winds and 30-35 ft seas in the constricted Buckner Bay (Nakagusuku Wan): 12 ships and craft sunk, 222 grounded, 32 severely damaged; personnel casualties 36 killed, 47 missing, 100 seriously injured. Appendix III ('Typhoon Damage at Okinawa. Based Upon Progress Reports to 19 November') lists this hull verbatim: 'YMS 275 - Grounded - Beyond economical repair. Strip, abandonment.' ComServDiv 104 under Commodore T. J. Keliher was assigned salvage work; by 19 November 79 ships had been refloated and 132 were under repair.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-10-09 to 1945-11-19 (report basis); hulk destroyed Dec 1945
- Population
- YMS-275 crew (Oct-Dec 1945); ComServDiv 104 salvage crews
- Limitations
- Ship-specific official disposition: 'grounded - beyond economical repair; strip, abandonment' - NavSource's 'sunk in typhoon Louise' is the same event in summary form; the hulk was destroyed December 1945 and the hull struck 3 January 1946 (see ev-01). Establishes loss circumstances, not material content. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-275-05
-
[7]National Archives, Special List #44 - List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947 (ship-number ordering), p. 117 (PDF verified live) [other_primary]
- Locator
- sl-44-ship-number.pdf, p. 117, row 'YMS-275 8/20/1943 12/7/1945'
- Finding type
- historical_record
- Finding
- NARA Special List 44 records US Navy deck logs for YMS-275 covering 8/20/1943-12/7/1945 - coverage beginning at the hull's completion date and extending two months past the 9 October 1945 typhoon loss, consistent with administrative logging of the grounded/stripped hulk through its December 1945 destruction. The logs are paper-era holdings; YMS-275 does not appear in NARA's list of digitized deck logs.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-08-20 to 1945-12-07
- Population
- YMS-275 crew (1943-45)
- Limitations
- Archival lead only: establishes that deck logs exist and their date coverage - the log content itself (positions, casualties, work performed, material mentions) was not reviewed. The post-loss coverage endpoint (12/7/1945) is the catalog's stated range; what it physically documents (hulk log vs. final administrative entries) is unverified. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-275-06
-
[8]Era inference built on: NavSource spec block (diesel-powered YMS-1 class: 2 x GM 8-268A diesels, 2 shafts - no steam plant); wooden-hulled wartime construction of the Bellingham yard's Navy output (Port of Bellingham history; shipbuildinghistory.com yard table lists YMS-275, 278 t, 136 ft, delivered 20-Aug-43); GAO HRD-80-2 (see ev-08) [other_primary]
- Locator
- NavSource 11/19275.htm spec block; shipbuildinghistory.com Bellingham yard table; portofbellingham.com Squalicum Harbor history; GAO HRD-80-2
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel yard minesweeper built 1942-43 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, and electrical insulation 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
- 1942-1945
- Population
- Bellingham yard construction trades (1942-43); crew (1943-45); salvage/strip crews on the grounded hulk (Oct-Dec 1945)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, construction specification, or work package located for YMS-275. 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-275-07
-
[9]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 (1942-43) and service era (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. 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-275-08
-
[10]Batch-8905 search ledger (this record): NavSource hull page; NHHC Pacific Typhoon Appendix III; DANFS Argonne (AP-4); Cressman Official Chronology 1945 (HyperWar); NHHC PacFleet org 1 May 1945; NARA SL44 p.117; NARA digitized-logs list; NVR; CourtListener (blocked - fleet pacing); secondary litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-275-01 through sl-uss-yms-275-12
- 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-275 (YMS-275) was found in the public sources searched. CourtListener partial coverage: the 'YMS-275' opinion query ran (count 56 fuzzy-match results; all 20 returned hits reviewed - zero genuine 'YMS-275' mentions, every hit a tokenizer name-collision, none asbestos litigation); the docket query and the 'USS YMS-275' name variants were blocked by the fleet pacing limit at every attempt - logged as blocked in search_ledger, not as a negative result. Secondary web sweeps surfaced no qualifying case; the only 'asbestos' material is law-firm listicle content asserting asbestos aboard Navy minesweepers generically (mesotheliomahope, mesotheliomavets, mesothelioma.com and similar) without hull-specific primary sourcing - excluded by source policy.
- 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 - and the litigation repository search is partially open (opinion index queried with no qualifying hit; docket index and name variants blocked by fleet pacing). Deck logs (NARA RG 24, coverage 8/20/1943-12/7/1945), builder construction specs, and any salvage/strip records for the grounded hulk are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-275-09