Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
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[1]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. 123: 'YMS-87 8/15/1942 12/31/1942 see YMS-86, 1942'; 'YMS-87 8/15/1942 12/31/1942'; 'YMS-87 1/1/1943 6/30/1945'
- Finding type
- historical_record
- Finding
- Special List 44 inventories US Navy deck logs for YMS-87 in three entries: '8/15/1942 12/31/1942 see YMS-86, 1942' (a cross-reference - that segment also appears in YMS-86's 1942 logbook), '8/15/1942 12/31/1942', and '1/1/1943 6/30/1945'. Combined coverage runs from her completion date (15 August 1942) through 30 June 1945 - essentially her entire wartime career, ending about nine and a half months before she was struck (17 April 1946).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-1945 (log coverage); inventory published 1978
- Population
- YMS-87 crew, 1942-1945 (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-87 does not appear on NARA's digitized deck-log index (archives.gov navy-online page searched 2026-10-05), so the logs are an undigitized archival lead only. Log coverage ending 6/30/1945 leaves July 1945 through the April 1946 striking uninventoried in this list. Entries verified programmatically on p. 123 of the typeset ship-number PDF (pdftotext extraction).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-87-01
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[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-87 page (build/disposition chronology compiled from Navy Register data; DANFS transcription box; commanding-officer listing; 1948 merchant-registry block) [other_primary]
- Locator
- YMS-87 chronology block, specifications block (1942 and 1948 columns), commanding-officer table, DANFS transcription box
- Finding type
- vessel_history
- Finding
- YMS-1 Class Auxiliary Motor Minesweeper (call sign Nan-Uncle-Nan-Yoke): laid down 18 July 1941 by the Al Larson Boat Shop, Terminal Island, CA; launched 31 March 1942; completed 15 August 1942; struck from the Naval Register 17 April 1946; transferred to the War Shipping Administration in September 1947; registered in 1948 to Russell B. Eyerly of Salem, OR as the towboat Leeruss; fate unknown. Spec block: displacement 270 t. (251 t. in 1948); length 136' (126' in 1948); beam 24' 6" (25' in 1948); draft 8' (11.3' in 1948); speed 15 kts.; complement 32 (four 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. Commanding officer LTJG G. J. Hessick, USNR (1945). Page carries a short 'Dictionary of American Naval Fighting Ships' transcription: 'Built at Al Larson Boat Shop, Terminal Island, Long Beach, CA. Keel laid 18 July 1941; Launched 31 March 1942; Completed 15 August 1942. Struck from Naval Vessel Register 17 April 1946.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-1948
- Population
- Al Larson Boat Shop construction trades (1941-42); YMS-87 crew (1942-46)
- Limitations
- NavSource is a compiled secondary archive of official data, not the underlying registers; the quoted DANFS text is a transcription (no live or archived NHHC DANFS page for this hull was located). Spec-block displacement conflicts with the NavSource class index and the shipbuildinghistory yard table (270 t. vs 320 t. - see gaps). Contains no asbestos information. Operational stations are not listed - service detail between completion and the 1 May 1945 roster is undocumented in located sources.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-87-02
-
[3]NHHC, 'United States Pacific Fleet Organization, 1 May 1945' (official CINCPOA fleet organization roster, Navy Department Library Online Reading Room) - live NHHC page returns 404 as of 2026-10-05; cited via Wayback Machine capture of 2025-12-08 (archived), with content verified against the live HyperWar transcription at ibiblio.org/hyperwar/USN/OOB/PacFleet/Org-450501/ [other_primary]
- Locator
- Pacific Fleet Organization 1 May 1945, Mine Squadron TWENTY YMS block: 'YMS 87 | 96 | Lt. (jg) G. J. Hessick (USNR)' (HyperWar transcription p. --134-- region; identical row verified in the archived NHHC capture)
- Finding type
- vessel_history
- Finding
- The official 1 May 1945 Pacific Fleet organization roster lists 'YMS 87' under Mine Squadron TWENTY (Capt. R. A. Larkin), within the forces of Commander Minecraft, Pacific Fleet (Rear Admiral A. Sharp), with commanding officer 'Lt. (jg) G. J. Hessick (USNR)' - matching the NavSource commanding-officer listing. The hull carries '96' in the roster's division column (Mine Division 96; the same column carries 11, 14, 94, and 96 on other YMS rows in the squadron block). This is the only operational-status documentation located for the period between completion (15 Aug 1942) and the end of log coverage (30 Jun 1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1945-05-01 (roster date)
- Population
- YMS-87 crew under Lt. (jg) Hessick; Mine Squadron 20 minecraft population (1 May 1945)
- Limitations
- Establishes fleet assignment and commanding officer on the roster date, not stations or operations - where in the Pacific she was based or sweeping on 1 May 1945 is not stated. The division-column convention is read from the document's own structure (numbered mine-division markers); the roster does not spell out a legend for it. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-87-03
-
[4]uboat.net Allied Warships, USS YMS-87 (YMS-87) page - build/disposal data table [other_primary]
- Locator
- uboat.net ship/9507 data table and History line
- Finding type
- vessel_history
- Finding
- Minesweeper of the YMS class: built by Al Larson Boat Shop Inc. (Terminal Island, California); ordered 1 April 1941; laid down 18 July 1941; launched 31 March 1942; commissioned 15 August 1942; history line 'Stricken on 17 April 1946.' No commands listed.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-1946
- Population
- YMS-87 crew (1942-46)
- Limitations
- uboat.net is a compiled secondary database, not a primary registry; its data corroborates NavSource and the SL44 log-coverage start on all shared milestones. The 'ordered 1 April 1941' date rests on this source alone - not verified against a contract record (see gaps). 'Commissioned 15 Aug 1942' vs NavSource's 'Completed 15 August 1942' is a wording variant on the same date. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-87-04
-
[5]shipbuildinghistory.com (Tim Colton), Al Larson Boat Shop yard table, Terminal Island CA - builder hull list [other_primary]
- Locator
- Al Larson Boat Shop yard table, YMS-87 row (O.N. 254281)
- Finding type
- historical_record
- Finding
- The builder's hull table lists 'YMS 87' for the U.S. Navy, type Minesweeper, 320 tons, 136 ft., built/delivered 15-Aug-42, under U.S. official number O.N. 254281, disposition 'Sold as f/v Lee Russ, later Jane M, NLD' - corroborating the NavSource merchant trail (towboat Leeruss, 1948, Russell B. Eyerly, Salem OR) and extending it: later fishing-vessel name Jane M, then no longer documented.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-1948+
- Population
- Al Larson Boat Shop construction trades (1941-42); postwar merchant crews of Leeruss / Jane M
- Limitations
- shipbuildinghistory is a compiled secondary yard table, not a primary register; the official number and merchant-name trail (Lee Russ / Jane M / NLD) rest on this compilation and are not verified against USCG merchant-vessel documentation (see gaps). Displacement shown as 320 t., conflicting with the NavSource hull-page figure of 270 t. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-87-05
-
[6]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. (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-1 through YMS-134 were the two-stack variant, which includes YMS-87. Surviving YMSs still in naval service were reclassified AMS and named in 1947 - YMS-87, already struck (17 April 1946), was not among them and received no AMS designation or name.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1941-1969
- Population
- YMS-class crews and builders, 1941-1969 (class context)
- Limitations
- Class-level design and loss 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-87-06
-
[7]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 construction (1941-42) and entire service era (1942-46).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- 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. Product page cited; the report's ship-level scope is program-wide.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-87-07
-
[8]National Archives, 'Asbestos - Records Relating to Health and Safety Issues for U.S. Navy Personnel' guided topic (Navy records research guide) [other_primary]
- Locator
- NARA guided topic 'Asbestos' page, Navy records section (RG 19 Entry P 11 General Information Books, minesweeper/minelayer coverage)
- Finding type
- regulatory
- Finding
- NARA's asbestos research guide identifies Navy record series relevant to shipboard asbestos - including Bureau of Ships 'General Information Books' for vessel types (RG 19, Entry P 11), which cover minesweepers, plus ship specifications and engineering drawings - as the archival route to any design-level material documentation for a hull of this class.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-05
- Study period
- 2026-10-05 (accessed)
- Limitations
- A research-path pointer only: the guide documents that such record series exist at NARA, not that a General Information Book or specification for YMS-87 itself was located or read - no such hull-level document was pulled this session. No asbestos finding for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-87-08
-
[9]Era inference built on: NavSource YMS index class description (wood hull, diesel plant, two-stack subgroup); GAO HRD-80-2 program documentation (ev-07); NavSource/uboat.net build records (Al Larson Boat Shop, 1941-42) [other_primary]
- Locator
- NavSource YMS index class description; GAO HRD-80-2; NavSource 11/19087.htm; uboat.net ship/9507; shipbuildinghistory larson.htm
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel yard minesweeper built 1941-42 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
- 2026-10-05
- Study period
- 1941-1948+
- Population
- Al Larson Boat Shop construction trades (1941-42); crew (1942-46); postwar merchant crews of Leeruss / Jane M
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, construction specification, or work package located for YMS-87. 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-87-09
-
[10]Batch-9170 search ledger (this record): NARA Special List 44 + digitized-log index; NavSource (hull page + class index); NHHC/DANFS; Naval Vessel Register; CINCPOA Pacific Fleet organization roster (archived NHHC + HyperWar mirror); uboat.net; shipbuildinghistory Al Larson yard table; Atlas shipyards.json; Wikipedia; NavalCoverMuseum; CourtListener opinion and docket search [other_primary]
- Locator
- search_ledger rows sl-uss-yms-87-01 through sl-uss-yms-87-16
- 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-87 was found in the public sources searched; no live or archived NHHC DANFS page exists for this hull (NavSource carries the short printed-entry transcription; danfs/y/yms-87.html returns 404 and has no Wayback capture); no NVR detail page exists (vessel stricken 1946, outside NVR coverage; SHIPDETAILS URL bounces to the NVR root); the deck logs themselves are undigitized. CourtListener: 'USS YMS-87' opinion returned 3 results, all Texas state appellate opinions matching on OCR-garbled text (name collisions, not the vessel); 'USS YMS-87' docket returned count 1588 - loose token matches on 'USS' inside unrelated dockets (MDL-875 master asbestos docket appears in the page but contains no YMS-87 mention; every result reviewed is a collision); 'YMS-87' opinion returned count 121, all noise collisions (no literal 'YMS-87' text in any result); the asbestos-qualified variant '"YMS-87" asbestos' opinion returned count 0 - confirming no asbestos opinion names the hull. The 'YMS-87' docket base query and its asbestos-qualified docket variant stayed fleet-paced across ~70 minutes of spaced retries - logged blocked, an open gap, not a negative result (search_ledger).
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 2026-10-05
- 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 hull passed to merchant service in 1947-48 and is no longer documented; whether she ever received a material or environmental survey is unknown.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-87-10