Evidence
9 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-9).
-
[1]research packet 1030-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (source conflict disclosed)
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-122-yms122-pkt-1030-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-122 page - build milestones, specifications, disposal [other_primary]
- Locator
- NavSource 11/19122.htm header block, specifications block
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 15 May 1941 by the Krause and Banks Shipbuilding Co., Inc., North Bend, OR; launched 2 June 1942; completed 24 September 1942; struck from the Naval Register 17 April 1946; transferred to the War Shipping Administration January 1947; 'Fate unknown.' Page states 'There is no DANFS history available for YMS-122.' Specifications: displacement 270 t.; length 136'; beam 24' 6"; draft 8'; speed 15 kts.; complement 32; armament one 3"/50 dual-purpose gun 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.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1947
- Population
- Kruse & Banks construction trades (1941-42); crew (1942-46)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry; its milestones generally track official records but are not themselves official. Page prints the builder name 'Krause and Banks' - the company's documented spelling is 'Kruse' (University of Oregon archival authority; shipbuilding-history yard tables). Page's per-engine power figure conflicts with class literature (see gaps). Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-122-yms122-01
-
[3]National Archives and Records Administration, Special List 44 - 'List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units,' by-ship-number PDF (logbooks availability list), page 115 [other_primary]
- Locator
- sl-44-ship-number.pdf, PDF page 115, line 'YMS-122 9/24/1942 6/30/1945'
- Finding type
- vessel_history
- Finding
- NARA indexes deck logs for this hull: the by-ship-number listing records 'YMS-122' with coverage 9/24/1942 - 6/30/1945 (PDF page 115, verified verbatim against the live archives.gov file 2026-10-04). The entry documents that logbooks covering her entire Navy career from completion through mid-1945 are held at the National Archives.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1945
- Population
- Crew (1942-45) as recorded in logs not yet inspected
- Limitations
- Index entry only - establishes that deck logs for this hull exist at NARA covering the stated window; it does NOT supply their contents (the logs themselves are undigitized), and log-coverage dates are not commissioning/decommissioning dates per the list's own scope. No asbestos content. War diaries, muster rolls, and action reports were not locatable via the NARA catalog this session (catalog.archives.gov returns a JS application shell to non-browser fetch - see search_ledger).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-122-yms122-02
-
[4]Oregon Encyclopedia, 'Victor C. West (1921-2002)' - publishes 'U.S. Navy minesweeper YMS 122' credited to the Victor C. West Collection, Coos History Museum, accession 009-16.174; plus U.S. Navy photo NH 85825 via NavSource [museum_official]
- Locator
- Oregon Encyclopedia article image gallery (009-16.174); NavSource 11/19122.htm photo table (NH 85825)
- Finding type
- historical_record
- Finding
- Two photographic records document this hull's physical presence in her early service: U.S. Navy photograph NH 85825 shows YMS-122 off the Mare Island Navy Yard on 21 October 1942 - one month after completion (caption via NavSource); and a photograph of 'U.S. Navy minesweeper YMS 122' is held in the Victor C. West Collection at the Coos History Museum (accession 009-16.174), published by the Oregon Encyclopedia. The Coos Bay photo ties the hull to her builder's home port.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942
- Population
- Crew and any yard trades during the October 1942 Mare Island presence
- Limitations
- Physical-presence documentation only - a photograph off Mare Island establishes presence, not what work (if any) the yard performed there; it is not an availability or overhaul record. NH 85825 metadata is transcribed via NavSource captions; the NHHC online photo page could not be located (candidate URLs 404). Oregon Encyclopedia page verified live via scrape (direct curl returns 403). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-122-yms122-03
-
[5]NavSource Online, YMS-265 page - full post-Navy provenance chain (Tahsis Chief No. 2 -> W. F. Gibson -> Marjorie Todd); corroborated by nauticapedia.ca registry record 190829 and NavSource YMS-123 page (Uchuck III) [other_primary]
- Locator
- NavSource 11/19265.htm provenance block; NavSource 11/19123.htm; nauticapedia.ca articles.php?article=1 'Converted Military Vessels' table + record 190829; shipbuildinghistory.njscuba.net/us-navy-small/ym/ YMS table
- Finding type
- historical_record
- Finding
- CORRECTION: secondary shipbuilding tables misattribute two civilian identities to this hull. Shipbuildinghistory's master YMS table lists YMS-122 'struck 1946, sold as Majorie Todd' [sic]; a mirrored Kruse & Banks yard table lists YMS 122 'Struck 1946, sold 1951 as Uchuck III' and assigns the Tahsis Chief/W. F. Gibson/Marjorie Todd chain to 'YMS 123.' NavSource's own hull pages resolve both: YMS-265 (laid down at the same Kruse & Banks yard) is documented as transferred to the WSA May 1947, struck 10 June 1947, then acquired 1949 by William C. Gibson of Vancouver (Tahsis Chief No. 2), renamed W. F. Gibson 1951, acquired by J. H. Todd and Sons 1961 and renamed Marjorie Todd 1963 - matching Canadian registry 190829 as recorded by nauticapedia.ca; and YMS-123 is documented as purchased late 1951 by Nootka Sound Services Ltd. as MV Uchuck III (Canadian registry 179475). No source located documents YMS-122's disposition after her January 1947 WSA transfer - 'fate unknown' stands.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1946-1968 (post-Navy window)
- Limitations
- Corrects a circulating attribution error, not a material claim. The correction rests on NavSource's YMS-265/YMS-123 provenance chains plus nauticapedia.ca registry joins (detail record id=15279 keys registry 190829 to YMS.265; nauticapedia direct fetch returns 403/Cloudflare - content verified via search index). The shipbuildinghistory master table's 'Majorie Todd' row and the yard table's row-shifted assignments appear to be misattributions, not alternative documentation. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-122-yms122-04
-
[6]Era inference built on: NavSource YMS-122 specifications block (diesel plant); NavSource Auxiliary Minesweeper index ('wood-hulled YMS'; built at 35 yacht yards); shipbuildinghistory YMS table ('561 wooden-hulled minesweepers'); Pacific War Online Encyclopedia YMS class article (wooden vessels for acoustic/magnetic mine sweeping in coastal waters) [other_primary]
- Locator
- NavSource 11/19122.htm specifications; NavSource 11/19idx.htm class description; shipbuildinghistory.njscuba.net/us-navy-small/ym/; pwencycl.kgbudge.com/Y/m/YMS_class.htm
- Finding type
- asbestos_application
- Finding
- Class/era inference: the YMS-1 class were wood-hulled, diesel-powered coastal minesweepers built at small yacht yards - construction and machinery dominated by timber joinery and diesel engines rather than steam plant. Asbestos-relevant applications aboard a craft of this type and era were limited to engine/muffler and exhaust-system lagging, gaskets, valve packing, electrical insulation, and interior joiner/galley insulation. The boiler/turbine lagging pathway of steam vessels does not apply; wood construction also reduces the steel-structure fireproofing pathway.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1947
- Population
- Kruse & Banks construction trades (1941-42); crew (1942-46); any later civilian owners if hull sold (unlocated)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for YMS-122. Names era-standard applications, not confirmed installed materials; no quantity. A wooden hull and diesel plant make the asbestos footprint materially smaller than a steam vessel's, but absence of documentation is not proof of absence - era equipment insulation, switchgear arc barriers, and adhesive/floor products remain plausible.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-122-yms122-05
-
[7]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 service era (1942-46).
- 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 - the GAO review centered on shipyard and steam-era naval vessels, and a wooden diesel sweeper sits at the low-intensity end of that program. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403, confirmed 2026-10-04) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-122-yms122-06
-
[8]University of Oregon Libraries, Special Collections and University Archives - 'Kruse and Banks Shipbuilding Company records,' collection Bx 015 [museum_official]
- Locator
- SCUA resource page, abstract + biographical/historical note; collection dates 1877-1936
- Finding type
- historical_record
- Finding
- The University of Oregon holds the builder's surviving records: collection Bx 015, 'Kruse and Banks Shipbuilding Company records' (0.25 linear feet; one account book, steamship specifications and drawings, shipyard photographs). The collection's stated coverage is 1877-1936, which predates this hull's 1941-42 construction - but it is the located archival anchor for the builder and the authoritative spelling 'Kruse and Banks.'
- Verification
- verified
- Role
- archival_lead
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1877-1936 (collection coverage)
- Limitations
- Archival lead only: the collection pre-dates the YMS contract era and is not expected to contain hull-specific material for YMS-122; WWII contract records for this yard are unlocated. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-122-yms122-07
-
[9]Batch-8800 search ledger (this record): NavSource (hull + class index + sister-hull pages); NARA Special List 44; DANFS mine-warfare index; NVR; uboat.net; shipbuildinghistory; nauticapedia; Oregon Encyclopedia/Coos History Museum; U Oregon SCUA; CourtListener (blocked); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-122-yms122-01 through -14
- 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-122 was found in the public sources searched. CAVEAT: CourtListener could not be queried this session - the fleet-wide pacing limiter returned 'budget momentarily spent' on repeated attempts across the session (a deferral state, logged as blocked in search_ledger, NOT a negative result). Secondary web sweeps surfaced no qualifying case; the only 'asbestos aboard' material for YMS-type craft is law-firm marketing content (mesothelioma/asbestos-ships listicles) asserting asbestos without 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 a genuine open gap (pacing-blocked, not run). Deck logs (1942-45, NARA), builder contract records, and WSA disposal files are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-122-yms122-08