Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 1066-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-414-yms414-pkt-1066-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-414 page - build timeline, specifications, commanding officers, post-Navy merchant chain (verified live) [other_primary]
- Locator
- NavSource 11/19414.htm header timeline, specifications block, commanding-officer table
- Finding type
- vessel_history
- Finding
- Documented for this hull: YMS-1 class auxiliary motor minesweeper laid down 20 September 1943 by the Stadium Yacht Basin Inc., Cleveland, OH; launched 11 March 1944; completed 6 September 1944; commissioned USS YMS-414, 7 September 1944 (call sign Nan-Peter-Sugar-Able); decommissioned 1 December 1946; struck from the Naval Register 25 May 1947; transferred to the War Shipping Administration 14 November 1947; acquired 1963 by R. G. Vest of Seattle, WA for use as a freight barge named Charley B; acquired 1970 by Tom McDonald of Seattle; out of documentation 1984; fate unknown. Spec block: displacement 270 t.; length 136'; beam 24'6"; draft 8'; speed 13 kts.; complement 50; armament one 3"/50 dual-purpose mount, two 20mm mounts, two depth-charge projectors; propulsion two GM 8-268A diesels ('880bhp'), Snow and Knobstedt single reduction gear, two shafts. Commanding officers: LT Joseph C. Bedsole USNR (7 Sep 1944 - Jul 1945); LTJG Albert Jack Bartlett USN (Jul 1945 - Apr 1946). Page states 'There is no DANFS History currently available for YMS-414.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1984
- Population
- Stadium Yacht Basin construction trades (1943-44); wartime crew (~32-50, sources conflict); WSA/maritime disposal chain (1947); merchant barge operators/crew, Seattle (1963-84)
- Limitations
- NavSource is a volunteer secondary compilation tracking NVR/DANFS conventions - its milestone dates are the fullest public timeline for this hull but are not a primary registry; commissioning date conflicts with uboat.net by one day (see gaps). Contains no asbestos or material content. WSA transfer described without the underlying disposal instrument (sales contract/NDRF card) - that document is not located.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-01
-
[3]Navy and Marine Corps Awards Manual NAVPERS 15,790 (Rev. 1953), Part IV sub-section 16 'Area Campaign Medals' - Asiatic-Pacific ship-level battle-star list (HyperWar transcription of the official manual) [other_primary]
- Locator
- NAVPERS 15,790 Part IV, Asiatic-Pacific Area, P207 Minesweeping Operations Pacific table, 'YMS 414' entry
- Finding type
- vessel_history
- Finding
- The official awards manual credits this hull by name: 'YMS 414: 22 Feb 46 - 2 Mar 46 P207-28; 3 Nov 45 - 26 Dec 45 P207-18' under campaign item P207 'Minesweeping Operations Pacific (23 Jun 45 - 2 Mar 46; only 1 star for participation in 1 or more sub-operations)'. P207-18 is Fukuoka (Kyushu-Korea Area), defined window 13 Oct 45 - 11 Jan 46; P207-28 is Yangtze River Approaches, defined window 22 Feb - 2 Mar 46. Documented service: post-surrender mine clearance off Fukuoka (Kyushu) Nov-Dec 1945 and in the Yangtze River approaches (China) Feb-Mar 1946 - one battle star for the Asiatic-Pacific campaign.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-1946 (operations); 1953 (manual revision)
- Population
- Crew aboard during post-surrender minesweeping, Nov 1945 - Mar 1946 (~30-50, sources conflict)
- Limitations
- Official manual transcription hosted on HyperWar (ibiblio.org); the P207 operation definitions and ship-credit list are primary award documentation, but it records campaign participation, not exposure or materials. It establishes presence in those waters during those windows only - it does not describe daily operations, which would require the deck logs (see ev-03). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-02
-
[4]National Archives, Special List 44: List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947 (1978), ship-number index [other_primary]
- Locator
- Special List 44 PDF p. 121, YMS-414 row: '9/7/1944 - 12/31/1945'; NARA logbook overview page (RG 24, Entry 118, NAID 581208)
- Finding type
- historical_record
- Finding
- Special List 44 inventories US Navy logbooks for YMS-414 covering 9/7/1944 - 12/31/1945 (the full WWII service period, starting the day of commissioning). Holdings are in RG 24 (Records of the Bureau of Naval Personnel), Entry 118 (NAID 581208). The hull does not appear in NARA's online digitized deck-log list; the logs are physical College Park holdings, not digitized images.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1945
- Population
- Crew documented in logs, Sep 1944 - Dec 1945
- Limitations
- The list documents that logbooks exist and their date coverage - their contents are unexamined; coverage ends 12/31/1945 so the 1946 Yangtze operation and decommissioning are outside the inventoried span. Post-1945 logs, if transferred, would be in the post-1941 College Park series - not confirmed. Content (stations, injuries, materials) is unverified. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-03
-
[5]NHHC photographic records for this hull: 19-N-67887 and 19-N-67888 (NARA-copyrighted Bureau of Ships photos: 'Fitting out at the stadium yacht basin, Cleveland, Ohio, 10 July 1944') and NH 79711 ('In San Francisco Bay, 1945-1946,' courtesy D.M. McPherson, 1974); NHHC site search for 'YMS-414' returns exactly these three records - no DANFS entry exists [nhhc_danfs]
- Locator
- NHHC numerical photo index pages 19-N-67887, 19-N-67888, NH 79711 (all verified live 2026-10-04)
- Finding type
- vessel_history
- Finding
- Official Navy photographs place this hull fitting out at the builder's yard in Cleveland on 10 July 1944 (two frames) and in San Francisco Bay in 1945-1946 (one frame, NHHC-copyrighted). The absence of a DANFS narrative entry is confirmed both by NavSource's explicit statement and by the NHHC catalog search returning only the three photo records.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1946
- Population
- Crew visible/in service during fitting-out (Jul 1944) and San Francisco Bay (1945-46)
- Limitations
- Photographic presence records only - they establish where the hull was on the captioned dates, not what materials were aboard. No asbestos content; photos may incidentally show the Mk II single-stack configuration described in the class index. San Francisco Bay photo corroborates a post-war return to US waters consistent with the Dec 1946 decommissioning.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-04
-
[6]Shipbuilding History (Tim Colton compilation, njscuba.net mirror), 'Stadium Boat Works, Cleveland OH' yard table - YMS-414 row: O/N 293270, US Navy minesweeper, 278 tons, delivered 6 Sep 1944, 'sold 1946 as Charley B'; yard history note: started as Stadium Yacht Basin around 1935, closed 1957, at the foot of West 3rd Street [other_primary]
- Locator
- Stadium yard table row 'YMS-414'; Yard Minesweepers overview page (shipbuildinghistory YM index)
- Finding type
- vessel_history
- Finding
- The builder's launch list records YMS-414 as hull with official merchant documentation number O/N 293270, delivered to the US Navy 6 September 1944, later merchant name Charley B - corroborating NavSource's Stadium Yacht Basin attribution and post-Navy merchant chain. The same compiler's type overview states all 561 YMS/BYMS hulls were wooden-hulled minesweepers of essentially the same 136-ft, 13-knot design built by 35 yacht yards.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1984
- Population
- Stadium Yacht Basin construction trades (1943-44)
- Limitations
- Secondary compilation built from official vessel-documentation data (the O/N column is the USCG merchant official number). Its 'sold 1946' note conflicts with NavSource's Navy timeline (decommissioned Dec 1946, struck May 1947, WSA transfer Nov 1947) - the 1946 date likely compresses the Navy disposal chain; carried in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-05
-
[7]U.S. Naval Institute Proceedings, 'Saga of a YMS' (January 1948, vol. 74/1/539) - firsthand engineering account aboard YMS-238, a Stadium-built Cleveland sister of this hull [other_primary]
- Locator
- USNI Proceedings Jan 1948, 'Saga of a YMS', machinery and crew-quarters passages
- Finding type
- historical_record
- Finding
- A Cleveland-built sister's power plant, firsthand: 'two General Motors Diesels for main propulsion... electro-pneumatically controlled from the bridge. There was a similar Diesel direct-connected to a generator for magnetic minesweeping, while two Hercules 30-KW Diesels furnished electric power for the galley, for ventilating, and for other auxiliary equipment' - five diesel engines with independent exhaust systems in a 136-ft wooden hull, crew quarters 'very cramped' with an 'inadequate ventilating system.' Documents the machinery suite and confined-space ventilation environment typical of the type.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1944-1948
- Population
- YMS-class crews generally; engine-room ratings specifically (machinery spaces)
- Limitations
- Class-level firsthand account of a sister hull (YMS-238), not YMS-414 - the machinery suite is a type characteristic but individual installations varied. Contains no asbestos statement; cited for machinery/ventilation context only, on which era inference rests. Ventilation inadequacy in a confined wooden hull is a relevant exposure-dynamic fact if any lagged material degraded.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-06
-
[8]GAO, Navy's Efforts to Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) - full text reviewed this session [gao]
- Locator
- GAO HRD-80-2 full text: transmittal letter and 'NAVY'S POLICY ON USE OF ASBESTOS' section; product page https://www.gao.gov/products/hrd-80-2
- Finding type
- gov_survey
- Finding
- Government documentation of the Navy asbestos era covering this hull's entire service life: the Navy stated 'all ships contain some asbestos in such components as clutches and electric cables,' thermal insulation was 'the Navy's major use of asbestos aboard ships,' specifications were not revised to asbestos-free thermal insulation until 1973, and 'some ships were delivered with asbestos insulation as late as May 1978' - i.e., throughout YMS-414's 1943-47 construction and service era, asbestos insulation and components were standard and uncontrolled by substitution policy.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1979 (report); construction/use era 1943-47 for this hull
- Population
- Navy ships and shipyard workers program-wide
- Limitations
- Program-level documentation; supports era context only - YMS-414 is not named, and as a wooden diesel craft her insulation load was far lighter than a steam combatant's. The GAO fieldwork yards were Long Beach and Norfolk Naval Shipyards - not Cleveland. Does not establish materials aboard this hull, individual exposure, or quantity.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-07
-
[9]Era inference built on: NavSource specifications (2x GM 8-268A diesels, reduction gear, 2 shafts); USNI firsthand account of sister YMS-238 machinery suite (5 diesel engines total); shipbuildinghistory type overview (561 wooden-hulled hulls of one design); GAO HRD-80-2 (asbestos standard in Navy ships through the era; clutches/cables on 'all ships') [other_primary]
- Locator
- NavSource spec block; USNI 'Saga of a YMS'; shipbuildinghistory YM overview; GAO HRD-80-2
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel minesweeper built 1943-44 sits inside the Navy's documented asbestos era; era-standard applications aboard a craft of this type were exhaust and muffler lagging on the diesel engines, manifold and flange gaskets, valve and machinery packing, electrical cable insulation, and brake/clutch linings on the winch and windlass. The wooden hull and absence of a steam plant mean no boiler/turbine lagging pathway and minimal structural insulation - the plausible asbestos load is machinery-room components, consistent with GAO's 'clutches and electric cables' minimum aboard all Navy ships.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1943-1984
- Population
- Stadium Yacht Basin construction trades (1943-44); engine-room crew (1944-46); merchant-barge crew Charley B (1963-84); any disposal/scrapping trades post-1984
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for YMS-414. Names era-standard applications, not confirmed installed materials. No quantity. No manufacturer attribution for this hull. Whether any asbestos was in fact aboard is not ship-proven.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-08
-
[10]Batch-9053 search ledger (this record): NavSource; NHHC photo catalog + site search (no DANFS entry); NARA Special List 44 + digitized-logs list; NAVPERS 15,790 transcription; shipbuildinghistory; uboat.net; USNI; GAO full text; NVR (excluded by 1987 cutoff); CourtListener 4 base queries (all zero); secondary web + VA BVA sweeps [other_primary]
- Locator
- search_ledger rows sl-uss-yms-414-01 through -16
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or litigation naming YMS-414 was found in the public sources searched (see search_ledger). CourtListener was searched this session - all 4 base queries ("YMS-414" and "USS YMS-414", opinion and docket indexes) returned count 0; no opinion or RECAP docket names this hull. Secondary web sweeps surfaced no qualifying case and no veteran-claim material - unlike better-known hulls, YMS-414 does not even appear in law-firm marketing listicles.
- 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-consistent inference stands. Litigation coverage is limited to CourtListener's opinion and RECAP docket indexes: state-court dockets, VA BVA decisions (index JS-rendered), and non-RECAP PACER were not searched - a claim could exist outside indexed sources. Deck-log contents, WSA disposal file, and merchant documentation are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-09
-
[11]Source reconciliation: NavSource hull-page timeline; uboat.net YMS-414 entry; shipbuildinghistory Stadium row; NAVPERS 15,790 ship-credit list; NavSource class index and sister-page spec lines; USNI sister-hull account [other_primary]
- Locator
- uboat.net ship/9833; NavSource 11/19414.htm; shipbuildinghistory stadium table; Special List 44 p.121; NavSource 19idx class index
- Finding type
- historical_record
- Finding
- RECONCILIATION of circulating conflicts: (a) Commissioning - uboat.net says 6 Sep 1944; NavSource separates 'Completed 6 September 1944' from 'Commissioned 7 September 1944,' and the deck-log series inventoried by Special List 44 begins 9/7/1944, consistent with NavSource's 7 Sep date - carried. (b) Disposal - uboat.net 'Sold on 14 November 1947' vs NavSource 'Transferred to the War Shipping Administration 14 November 1947' vs shipbuildinghistory 'sold 1946': the WSA transfer date reconciles the first two (WSA handled Navy disposal sales); shipbuildinghistory's 1946 likely compresses the chain (decommissioning Dec 1946 being the closest event) - carried in gaps. (c) Complement - NavSource hull page 50 vs class-era ~32-34 (its own class spec 32; USNI firsthand 34 on sister; pwencycl 33) - the wartime-class figure is the better-supported crew number; carried in gaps.
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1984
- Limitations
- Correction row documents conflicts rather than resolving them beyond the reconciliation stated; all underlying sources are secondary compilations except the Special List 44 date anchor and the NAVPERS list. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-414-10