Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
-
[1]research packet 1031-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-124-yms124-pkt-1031-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-124 - construction timeline, commissioning CO, specifications, disposal (verified live 2026-10-04) [other_primary]
- Locator
- NavSource 11/19124.htm header block, specifications block, 'no DANFS' statement
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 4 December 1941 by the 'Krause and Banks' Shipbuilding Co., Inc., North Bend, OR (NavSource spelling - see correction row); launched 6 June 1942; completed and commissioned 23 October 1942 under the command of ENS John W. Pullen, USNR; decommissioned 31 March 1946; struck from the Naval Register 17 April 1946; transferred to the War Shipping Administration in March 1947; fate unknown. Call sign Nan-Baker-Dog-Tare. Specifications: 270 t.; length 136'; beam 24'6"; draft 8'; speed 15 kts.; complement 32; one 3"/50 dual-purpose mount, two 20mm mounts, two depth-charge projectors; two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Page states no DANFS history exists for YMS-124 and no image is available.
- 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 - milestone dates generally track Navy records but carry no commissioning instrument. Contains no asbestos content. The 'Krause and Banks' builder spelling is a typographical error (see ev-06). No wartime station, port, or operational detail is given beyond the milestone list.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-01
-
[3]National Archives, Special List 44: List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947 (Bradley, Kurtz, et al., comps., 1978) - 'Ships with Symbol and Number Designations' section, printed page 514 (scan verified via Allen County Public Library Genealogy Center mirror, display image 546); corroborated by NARA's own Special List #44 ship-number index PDF (https://www.archives.gov/files/research/military/logbooks/sl-44-ship-number.pdf, PDF p. 115, verified live 2026-10-04) [other_primary]
- Locator
- SL44 print ed. printed p. 514 (ACPL display image 546): 'YMS-124 | Mar. 8-31, 1943 / May 1, 1943-June 30, 1945 | 5'; sl-44-ship-number.pdf p. 115
- Finding type
- historical_record
- Finding
- Special List 44 records five logbooks for YMS-124 spanning two intervals: 8-31 March 1943 and 1 May 1943 - 30 June 1945. The same two coverage intervals appear in NARA's ship-number index (PDF p. 115 rows 'YMS-124 3/8/1943 3/31/1943' and 'YMS-124 5/1/1943 6/30/1945'). Indexed coverage is deck-log custody only: it postdates her October 1942 commissioning by over four months, contains an April 1943 gap between volumes, and ends nine months before her March 1946 decommissioning.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1945
- Population
- YMS-124 crew during logged intervals (Mar 1943, May 1943-Jun 1945)
- Limitations
- A finding-aid entry, not the logbooks themselves - it establishes log coverage and count, not log contents; no port, operation, availability, or exposure fact is established. Coverage dates are not commissioning or decommissioning records (NavSource's 23 Oct 1942 commissioning and 31 Mar 1946 decommissioning both fall outside the indexed spans). The logbooks are held at NARA (RG 24, College Park) and are not digitized; the April 1943 and pre-March-1943/post-June-1945 gaps are unexplained - logs may be missing, unindexed, or bound differently.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-02
-
[4]uboat.net Allied Warships, USS YMS-124 (YMS-124) - minesweeper of the YMS class (verified live 2026-10-04) [other_primary]
- Locator
- uboat.net ship/9544.html warship data table
- Finding type
- vessel_history
- Finding
- uboat.net's warship entry corroborates this hull's identity and milestones from a second compiled register: built by 'Kruse & Banks Shipbuilding Co. Inc. (North Bend, Oregon, U.S.A.)'; ordered 1 April 1941; laid down 4 December 1941; launched 6 June 1942; commissioned 23 October 1942; stricken 17 April 1946. No commanding officers are listed.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1946
- Population
- Kruse & Banks construction trades (1941-42); crew (1942-46)
- Limitations
- Secondary compiled register, not a primary record - corroborates NavSource milestones and supplies the correct 'Kruse & Banks' firm spelling and a contract/order date (1 Apr 1941) not carried by NavSource. Contains no asbestos, operational-itinerary, or disposal detail beyond the strike date.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-03
-
[5]Shipbuilding History yard table (navalmarinearchive.com mirror, verified live 2026-10-04; identical table live at shipbuildinghistory.com/shipyards/small/kruse.htm): 'Kruse & Banks Shipbuilding, North Bend OR' - output table and yard history [other_primary]
- Locator
- Kruse & Banks yard table rows YMS 121-YMS 124, YMS 265-268; yard-history paragraph
- Finding type
- vessel_history
- Finding
- The builder's output table lists 'YMS 124 | US Navy | Minesweeper | 278 t | 136 ft | 23-Oct-42 | Star of the 1943 movie "Minesweeper", struck 1946' - corroborating builder, tonnage, delivery date, and striking year from the yard side. Yard history: Kruse & Banks Shipbuilding founded 1902 by Knut V. Kruse (from Denmark), joined by Robert Banks 1905 (from Prince Edward Island), moved from Marshfield to North Bend about 1909, closed 1946 with land sold to Weyerhaeuser. The same table shows sisters YMS-121, YMS-122, YMS-123, and YMS-265 through YMS-268 built at the same yard.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1947
- Population
- Yard construction workforce (Kruse & Banks, North Bend, 1941-42)
- Limitations
- Shipbuilding History is a reputable compiled reference, not a primary document; it corroborates NavSource and uboat.net on builder and delivery date. Its 'Star of the 1943 movie' disposition note is itself one side of a disputed attribution (see ev-05) and is not asserted here. Documents the hull as a yard product - establishes no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-04
-
[6]Conflicting secondary attributions for the hull used in the 1943 feature 'Minesweeper': Shipbuilding History yard table (identifies YMS-124) vs. Wikipedia film article citing Koppes & Black, 'Hollywood Goes to War' (1987), pp. 69, 115 (identifies YMS-121); production record per AFI Catalog film 567 (production 3 May-late May 1943; Navy cooperation acknowledged via Commander Louis H. Gwinn, USNR, commanding officer of Naval Operating Base Terminal Island) [other_primary]
- Locator
- AFI Catalog film 567 'Minesweeper' production notes; en.wikipedia.org/wiki/Minesweeper_(film) production section, ref 8; navalmarinearchive.com/sbh/shipyards/small/kruse.html row YMS 124
- Finding type
- historical_record
- Finding
- Two secondary sources disagree on which Kruse & Banks-built YMS starred in the 1943 Pine-Thomas/Paramount feature 'Minesweeper': the Shipbuilding History yard table identifies this hull, YMS-124 ('Star of the 1943 movie "Minesweeper"'), while the Wikipedia film article (citing Koppes & Black 1987, pp. 69, 115) identifies sister YMS-121. The AFI Catalog confirms the production (3 May-late May 1943, Pine-Thomas for Paramount, Navy cooperation through Commander Louis H. Gwinn USNR of NOB Terminal Island; underwater scenes shot off Santa Catalina Island in June 1943) but does not name the vessel. This record asserts the identification for neither hull.
- Verification
- disputed
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943 (production); attribution published later
- Limitations
- DISPUTED attribution: neither claim has been traced to a primary record (production records or the ship's own logs). Koppes & Black is a reputable academic source but the page citations are unverified here; the yard-table attribution to YMS-124 is likewise unverified - both hulls were Kruse & Banks products, plausible candidates for the same claim. Notably, YMS-124's indexed deck-log coverage (5 logbooks, SL44) includes the May 1943 production window, while April 1943 is unindexed. A vessel-history footnote only - irrelevant to asbestos status.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-05
-
[7]Spelling cross-check: NavSource YMS-124 page prints 'Krause and Banks Shipbuilding Co., Inc.'; uboat.net ship/9544 and the Shipbuilding History yard table print 'Kruse & Banks Shipbuilding Co. Inc.'; the yard-history text documents founder Knut V. Kruse and partner Robert Banks [other_primary]
- Locator
- NavSource 11/19124.htm construction line; uboat.net 9544 'Built by' field; navalmarinearchive.com kruse.html yard history
- Finding type
- historical_record
- Finding
- CORRECTION: NavSource's 'Krause and Banks' builder spelling is a typographical error. The documented firm name is Kruse & Banks Shipbuilding Co., Inc. - corroborated by uboat.net's register entry and by the Shipbuilding History yard table and yard history (founded by Knut V. Kruse; Robert Banks joined 1905). The same misspelling appears on NavSource's sister-hull pages (YMS-121 batch record, same correction).
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1942 (construction window)
- Limitations
- Corrects a propagated name spelling, not a material claim - the yard identity (North Bend, OR builder of this hull) is consistent across all three sources. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-06
-
[8]Era inference built on: NavSource YMS class index (wood-hulled type, 561 built at 35 yacht yards, 481 completed; YMS-1 through YMS-134 two-stack variant; GM 8-268A diesels, 880 designed shaft horsepower, two shafts; class spec block complement 33) + NavSource hull spec block (ev-01) + GAO HRD-80-2 era documentation (ev-09) [other_primary]
- Locator
- NavSource YMS/BYMS class index page (type description and class spec block), verified live 2026-10-04
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel-powered yard minesweeper built 1941-42 sits inside the Navy's documented asbestos-use era, but carries no steam plant: the era-standard asbestos-relevant applications aboard a boat of this type would have been confined to small-craft systems - engine exhaust and muffler lagging, machinery and flange gaskets, valve stem packing, electrical insulation, brake linings, and insulation board in machinery and accommodation spaces - a materially smaller installed-insulation inventory than aboard steam vessels.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1947 (construction and naval service)
- Population
- Construction trades (Kruse & Banks, 1941-42); engine-room crew (complement 32-33)
- Limitations
- Class/design-level inference, not a hull record: no survey, material list, or work order names this hull. Establishes what would be typical aboard the type, not what was installed on YMS-124; does not establish quantity, fiber content, remaining material, or any individual exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-07
-
[9]National Archives, 'Researching Asbestos aboard US Naval Vessel up through 1961' - official research guide to the RG 19 Bureau of Ships records documenting asbestos in U.S. Navy materiel 1941-1961 (verified live 2026-10-04) [other_primary]
- Locator
- archives.gov guided-topic page; Beginning Research; Bureau of Ships correspondence; Cartographic Branch (Blueprints & Engineering Drawings); RG 19 entries A1 1266-A..P, UD 1001-1015; RG 143 specification indexes
- Finding type
- regulatory
- Finding
- NARA's official guide states 'the use of asbestos in U.S. Navy materiel from 1941-1961 is a frequently requested topic' and documents the archival pathway for hull-level determination: RG 19 Bureau of Ships general/confidential/secret correspondence filed by hull designation (this hull: 'YMS124'; class: 'YMS1 Class'; type correspondence as last resort), shipbuilding-yard QM correspondence files (Kruse & Banks as private contractor), Ship/General Information Books covering propulsion, auxiliary machinery, piping, ventilation, heating and air-conditioning systems, specification files (RG 19 S-18/S-19 series; RG 143 specification indexes), and cartographic engineering drawings - including the S39 Insulation and Lagging (and sometimes S48 Piping) series in RG 19 (19-Hull paper drawings; 19-Micro microfilm) - i.e., the records by which this hull's material content could be proven exist in undigitized archival series.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-04
- Study period
- 1941-1961 (guide scope)
- Population
- Navy construction/maintenance trades 1941-1961 (research-scope population)
- Limitations
- Research-pathway documentation, not a hull record: the guide confirms that asbestos content is an archival research question answerable only via undigitized RG 19/RG 143 records - none of those series were consulted for this hull. Does not name YMS-124, does not establish or negate materials aboard this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-08
-
[10]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 (1942-47).
- 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 (gao.gov returns HTTP 403 to automated fetch, confirmed 2026-10-04) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-09
-
[11]National Archives, An Introduction to Navy Deck Logs (verified live 2026-10-04) [other_primary]
- Locator
- archives.gov naval-deck-logs page: permanent-records rule; College Park holdings; WWII-era partial-exception note
- Finding type
- historical_record
- Finding
- NARA deck-log guidance states that only deck logs of commissioned Navy ships are retained as permanent records, that 1941-and-later logs are generally held at the National Archives in College Park, Maryland, and that World War II-era 'in service' vessels are a partial exception to the commissioned-only rule. The guidance provides the archival record path for the five YMS-124 logbooks indexed in Special List 44; the underlying logs were not reviewed in this pass.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-04
- Study period
- 1943-1945 records
- Population
- Navy deck-log holdings
- Limitations
- Record-path guidance only. The SL44-indexed logbooks are consistent with the commissioned status NavSource records (23 Oct 1942) but are not used here to prove a commissioning date. The guidance does not establish that the indexed logs are digitized, complete, or accessible online, and contains no asbestos, materials, or exposure finding.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-10
-
[12]CourtListener authenticated API v4 base queries via cl-auth-search.py fleet helper, 2026-10-04; attempts and pacing stand-downs recorded in search_ledger [court_record]
- Locator
- search_ledger rows sl-uss-yms-124-yms124-09 through -12; cl-yms124-*.json/.err helper outputs
- Finding type
- litigation_documented
- Finding
- Partially completed litigation sweep: the authenticated CourtListener helper returned HTTP 200 count 0 on the exact-name docket query ("USS YMS-124", type=r) - no docketed case names this hull in the RECAP index. The remaining three mandated base queries (exact-name opinion, hull-number opinion, hull-number docket) were stood down by the fleet-wide pacing gate before an HTTP result returned on every attempt this session; no asbestos-qualified variants were run because no completed base query returned a 20-result overflow.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Population
- CourtListener opinion and docket index
- Limitations
- An access-limited sweep, not a zero-result finding: one of four mandated base queries completed with zero docket hits; three queries remained blocked by the shared fleet pacing budget at report time (helper advisory: budget 'momentarily spent'). No raw, anonymous, or V3 CourtListener request was made. No litigation stage is assigned because no qualifying case hit was retrieved; litigation status is only partially resolved.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-11
-
[13]Batch-8802 search ledger (this record): NavSource hull page and class index; NARA Special List 44 ship-number PDF and print edition (ACPL mirror); NARA deck-log and asbestos research guides; uboat.net; Kruse & Banks yard table (two mirrors); AFI Catalog; CourtListener base queries via fleet helper; GAO product page (blocked); NHHC/DANFS and NVR availability checks; secondary web sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-124-yms124-01 through -16
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, engineering drawing, product-identification record, or qualifying litigation naming USS YMS-124 was found in the public sources searched (see search_ledger). The hull's wooden construction and diesel plant bound the plausible era application set to machinery/exhaust lagging, gaskets, packing, electrical insulation, brake linings, and joiner insulation - no boiler/turbine lagging pathway applies.
- 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 - the NARA asbestos guide documents undigitized RG 19/RG 143 series where hull-level material records could exist, and the five indexed deck logbooks were not examined. Does not establish or defeat any claim of exposure or legal eligibility. Litigation coverage is partial (one of four base queries completed).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-124-yms124-12