Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]National Archives, Special List 44, List of Logbooks of the United States Navy, 1941-1945, by Ship Number (YMS-91 entry) [other_primary]
- Locator
- PDF entry YMS-91: 8/22/1942-6/30/1945
- Finding type
- vessel_history
- Finding
- NARA Special List 44, the index of U.S. Navy deck logs by ship number, lists YMS-91 with logbook coverage from 8/22/1942 through 6/30/1945 (RG 24 entry; textual holdings, not among the YMS deck logs digitized in the National Archives Catalog as of 2026-10-05). Log coverage is a records-inventory fact only and is not asserted as a commissioning or decommissioning date.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-1945
- Limitations
- A logbook index is a history locator, not a commissioning order or material record. It does not establish asbestos presence, products, quantity, individual exposure, causation, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-91-01
-
[2]NavSource Online, Mine Warfare Vessel Photo Archive, YMS-91 page [other_primary]
- Locator
- YMS-91 entry: construction/service timeline and specifications block
- Finding type
- vessel_history
- Finding
- NavSource Mine Warfare Vessel Photo Archive records YMS-91 as a YMS-1-class auxiliary motor minesweeper: laid down 18 October 1941 by the South Coast Co., Newport Beach, CA; launched 7 March 1942; completed and commissioned 21 August 1942 and assigned to Mine Division 60 of the Pacific Fleet; transferred to the War Shipping Administration March 1948; sold 1949 to Dr. William Ballard of Vancouver, BC and renamed Marabell; sold 1953 to the Royal Canadian Hydrographic Service; out of service 1969; subsequent British Columbia owners through Dane Developments Ltd. (2016). Specifications given: 270 t, 136 ft x 24 ft 6 in x 8 ft, 15 knots, complement 32, one 3-inch/50 and two 20 mm mounts with two depth-charge projectors, two GM 8-268A 880-bhp diesels on two shafts. NavSource notes no DANFS history exists for YMS-91.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-2016
- Limitations
- NavSource is the authoritative specialist naval-history archive, not a government primary source; no NHHC DANFS entry exists for this hull to corroborate. Dates carry a sale-date conflict (1946 per shipbuildinghistory vs 1948-49 per NavSource/owner site) documented in gaps. Contains no asbestos information and establishes no exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-91-02
-
[3]NARA RG 38, WWII War Diaries: USS YMS-91 monthly diaries, NAIDs 134070013 (Jan 1943, Roll A212), 134108576 (Feb 1943, Roll A255), 134129227 (Mar 1943, Roll A278), 78414812 (Feb-Mar 1944, Roll A943), 78522237 (Jun 1944, Roll A1051), 134369095 (Sep 1944, Roll A1179), 77596529 (Oct 1945, Roll A1989) [other_primary]
- Locator
- Diary pages read at scan level: 1/18-22/43 (Treasure Island, channel sweeps), 2/8-9/43 (Bethlehem Alameda drydock, San Rafael degaussing range), 3/4-5/43 (channel sweeps), 2/1-29/44 (TU 52.10.2, Kwajalein Flintlock sweeps, Eller Island mines, TG 57.7 reassignment, CO signature William A. Hurst), 6/1-24/44 (TU 57.7.2, Gea Pass sweeps, Bronze Star presentation, AFD-17 drydock, Eniwetok escort), 9/1-8/44 (TU 57.6.1, Makin/Majuro), 10/1-6/45 (Ise Wan Jig sweeps, MinRon 105)
- Finding type
- vessel_history
- Finding
- Digitized USS YMS-91 war diaries (NARA RG 38, WWII War Diaries series) document this hull's operations: January-March 1943 San Francisco Bay channel magnetic sweeping based at Treasure Island (with YMS-90/-122/-123), including a drydock period at Bethlehem Steel Co., Alameda, 8-9 February 1943 and San Rafael degaussing-range runs; February 1944 attached to Sweep Unit Two (TU 52.10.2, Lt. J. H. Pace in YMS-90; TG 52.10 Cmdr. F. F. Sima in USS Revenge AM-110; CTG 52 RAdm. R. K. Turner in USS Rocky Mount) — on 1 February 1944, with YMS-90/-383/-388, she swept Gea Pass, the anchorage area and channels of southern Kwajalein Atoll (moored, acoustic and magnetic sweeps) during Operation Flintlock, then ran anti-submarine patrols, a hydrographic survey of Ambo Channel, and mine destruction off Eller Island (six moored contact mines swept 13 February; single-ship re-sweep 14-15 February); detached to TG 57.7 16 February; June 1944 under TU 57.7.2 continued Gea Pass/anchorage sweeps and ASW patrols at Kwajalein — on 1 June 1944 RAdm. J. H. Hoover came aboard to present the Bronze Star Medal to the commanding officer (Lt.(jg) William A. Hurst, USNR, per the diary signature) for meritorious service during the attack and occupation of Kwajalein — then drydocked in USS AFD-17 (10-11 June), alongside USS Luzon (19 June), and escorted SS William C. Yeager to Eniwetok with SC-1270 (21-23 June); September 1944 escort/patrol/services with Task Unit 57.6.1 in the Gilbert Islands (Tarawa, Makin/Butaritari, Majuro), alongside USS Bushnell (AS-15) at Majuro; October 1945 post-surrender magnetic ('Jig' gear) minesweeping in Ise Wan, Honshu, under Fifth Fleet TF 52, Mine Squadron 105 (USS Planter ACM-2), from the Wakayama anchorage with YMS-140/-147/-360/-410/-427.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1943-1945
- Population
- YMS-91 crew (complement ~32)
- Limitations
- Primary ship-generated operational record. Documents duty stations, sweep types, one documented commercial-yard drydock (Bethlehem Steel, Alameda, 2/43) and one floating-dry-dock docking (USS AFD-17, Kwajalein, 6/44), but contains no asbestos, material, or insulation information. Presence at a wartime shipyard or drydock does not establish asbestos exposure aboard this hull. The February 1944 diary places this hull sweeping Kwajalein's channels during the Flintlock assault; the Bronze Star presented aboard 1 June 1944 for 'meritorious service during the attack and occupation of Kwajalein' is consistent with that documented service. Intermediate months not read; the digitized diary series spans at least 1/1943-10/1945 in the catalog.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-91-03
-
[4]MV Marabell official vessel site, History and Refit/Conversion pages (Dane Developments Ltd.) [other_primary]
- Locator
- mvmarabell.com/history/ and /refit-conversion/
- Finding type
- vessel_history
- Finding
- The vessel's official site (MV Marabell, operated by current owner Dane Developments Ltd.) records: transferred to the War Shipping Administration March 1948; sold to Dr. William Ballard of Vancouver and renamed Marabell; sold 1953 to the Royal Canadian Hydrographic Service; out of service 1969; acquired 1972 by Lacerte Holdings, 1979 Marabell Charters, 1982 Sealand of the Pacific, 2003 Oak Bay Marina (floating sport-fishing lodge at Langara Island, Haida Gwaii), and 2016 Dane Developments of Courtenay, BC, which performed years of extensive repairs and refit converting her to a private 12-guest motor yacht.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1948-2016+
- Limitations
- Owner-published history; corroborates NavSource's disposal chain. Makes no statement about asbestos, abatement, or material content of the refit. Builder rendered 'South East Coast Co.' on the site - a transcription variant of South Coast Co., Newport Beach. Refit scope is described qualitatively only; hazmat handling, if any, is undisclosed.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-91-04
-
[5]Friends of Hydrography (fohcan.org), Ships: Marabell - transcribed CHS service notes incl. 1958 R.B. Young letter [other_primary]
- Locator
- Marabell ship page: 1953-1965+ survey list and 1958 letter text
- Finding type
- vessel_history
- Finding
- Friends of Hydrography records C.G.S. Marabell in Canadian Hydrographic Service survey work on the British Columbia coast from 1953 (Johnstone Strait) through at least 1965, per a 1958 R.B. Young letter describing her as originally a U.S. minesweeper and private yacht, 136 ft, 316 tons, carrying hydrographers and two launches.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1953-1969
- Population
- Canadian Hydrographic Service crew and hydrographers (~30 personnel, 6 hydrographers per 1958 note)
- Limitations
- Heritage-site transcription of CHS internal notes; establishes survey-era identity and use only. No asbestos or material content. Tonnage (316 t) differs from NavSource's 270 t displacement - different measures, not resolved.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-91-05
-
[6]CourtListener authenticated API v4, four base queries plus sanctioned asbestos-qualified variants via fleet helper [court_record]
- Locator
- search_ledger rows sl-uss-yms-91-11 through -17; raw JSON retained in worktree (cl-yms91-*.json)
- Finding type
- litigation_documented
- Finding
- The prescribed authenticated CourtListener sweep ran four base queries via the fleet helper (2026-10-05): exact-name opinion 'USS YMS-91' (count 7), exact-name docket 'USS YMS-91' (count 1,959), hull-number opinion 'YMS-91' (count 178), hull-number docket 'YMS-91' (count 14,486). Every result on the returned pages is token-collision noise (the engine splits 'YMS-91'/'USS'/'91' into separate match terms across unrelated criminal, bankruptcy, and commercial matters); no result names or concerns the vessel. Three base queries overflowed the 20-result page, sanctioning asbestos-qualified subsets: '"YMS-91" asbestos' opinion returned count 0; '"USS YMS-91" asbestos' docket returned count 0; '"YMS-91" asbestos' docket returned count 0 after a 1200-second pacing wait.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 2026-10-05
- Limitations
- A search sweep is not evidence that litigation or asbestos exposure was absent; loose-token collisions dominate the base results and were individually inspected as returned. Establishes neither exposure, product identity, causation, nor legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-91-06
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[7]Batch-9175 search ledger (this record): NARA Special List 44 and RG-38 war diaries; NavSource; NHHC DANFS (no entry exists); NVR; mvmarabell.com; fohcan.org; shipbuildinghistory; nauticapedia.ca (bot-blocked); CourtListener authenticated sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-91-01 through -17
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, product list, or docketed case naming USS YMS-91 or Marabell was found in the public sources searched (see 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. The hull survives after a multi-year private refit whose material-handling scope is undisclosed; whether any era materials remain is unknown. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-91-07