Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 1069-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERDICT: VERIFIED (thin sourcing)
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Limitations
- qualifier: VERDICT: VERIFIED (thin sourcing)
- Evidence ID
- uss-yms-432-yms432-pkt-1069-packet-md
-
[2]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. 121: 'YMS-432 1/1/1945 12/31/1945'
- Finding type
- historical_record
- Finding
- Special List 44 inventories US Navy deck logs for YMS-432 covering 1/1/1945 through 12/31/1945 - the calendar year bracketing her combat-era career: commissioned 30 December 1944 (two days before log coverage begins), carried in the Pacific minecraft organization (Mine Squadron TWENTY) on the 1 May 1945 roster, and through the end of the war year. Coverage ends 12/31/1945 - eleven months before her 1 December 1946 decommissioning; a 1946 log year is not shown in this inventory entry.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945 (log coverage); inventory published 1978
- Population
- YMS-432 crew, 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-432 does not appear on NARA's digitized deck-log index (archives.gov navy-online page searched 2026-10-04), so the logs are an undigitized archival lead only. Entry verified programmatically on p. 121 of the typeset ship-number PDF (pdftotext extraction): 'YMS-432 1/1/1945 12/31/1945'. The two-day offset between commissioning (30 Dec 1944) and log start (1 Jan 1945), and the absent 1946 log year, are inventory facts not explained by the source.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-01
-
[3]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-432 page (build/disposal chronology compiled from Navy Register data; photo captions; commanding-officer listing) [other_primary]
- Locator
- YMS-432 chronology block, specifications block, commanding-officer table, photo captions
- Finding type
- vessel_history
- Finding
- YMS-1 Class Auxiliary Motor Minesweeper (call sign Nan-Queen-Uncle-Jig): laid down 24 March 1944 by the Tacoma Boatbuilding Co., Tacoma, WA; launched 8 July 1944; completed and commissioned USS YMS-432, 30 December 1944; decommissioned 1 December 1946; struck from the Naval Register 25 February 1947; transferred to the War Shipping Administration 22 January 1948; acquired in 1949 by Lowell J. Beaver of Seattle, WA for use as a freight barge and named Rande C.; out of documentation 1984; fate unknown. Spec block: 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. Commanding officer LTJG Robert W. Crippin, USNR (30 December 1944 - 1945). A photo was contributed from the collection of John D. McGinley, MoMM3c, who served in YMS-432 April 1945 - July 1946. Page states: 'There is no DANFS History currently available for YMS-432.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1984
- Population
- Tacoma Boatbuilding construction trades (1944); YMS-432 crew (1944-46); WSA/merchant conversion crews (1948-49)
- Limitations
- NavSource is a compiled secondary archive of official data, not the underlying registers; the merchant-phase details (Rande C., Beaver acquisition, 1984 de-documentation) rest on this source alone among those located. Contains no asbestos information. Operational stations between commissioning and disposal are not listed - service detail is undocumented in located sources.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-02
-
[4]NHHC, 'United States Pacific Fleet Organization, 1 May 1945' (official CINCPOA fleet organization roster, Navy Department Library Online Reading Room) [other_primary]
- Locator
- Pacific Fleet Organization 1 May 1945, Mine Squadron TWENTY YMS block: 'YMS 432 | Lt. R. W. Crippin (USNR)'
- Finding type
- vessel_history
- Finding
- The official 1 May 1945 Pacific Fleet organization roster lists 'YMS 432' under Mine Squadron TWENTY (Capt. R. A. Larkin), within the forces of Commander Minecraft, Pacific Fleet, with commanding officer 'Lt. R. W. Crippin (USNR)' - matching the NavSource commanding-officer listing (LTJG Robert W. Crippin; the roster's 'Lt.' vs NavSource's 'LTJG' is a rank wording variant). YMS-432's row carries no footnote marker and no number in the pre-name column; the (1) marker appears on roster-mates 412, 421, 423-430, 433-437, 440, 441, 445 (and on 475, 477, 478 later in the list) but is absent on hers - a pattern shared with rows 414-418, 431, 442, and 443. This is the only operational-status documentation located between commissioning (30 Dec 1944) and disposal.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-05-01 (roster date)
- Population
- YMS-432 crew under Lt. (jg) Crippin; 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 pre-name column (numbers such as 11, 14, 94, 96 on other rows) and the (1) footnote's legend were not resolved this session; the absence of both on this hull's row is recorded, not interpreted. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-03
-
[5]NHHC, 'Typhoons and Hurricanes: Pacific Typhoon at Okinawa, October 1945' - extract on Typhoon Louise from the Commander in Chief, Pacific Fleet and Pacific Ocean Areas report on the Surrender and Occupation of Japan (Annex A narrative; Appendix III damage listing, progress reports to 19 November) [other_primary]
- Locator
- NHHC page, Appendix III table - 18 YMS rows searched; 'YMS 432' absent
- Finding type
- vessel_history
- Finding
- The official CINCPOA report's Appendix III ('Typhoon Damage at Okinawa. Based Upon Progress Reports to 19 November') names 18 YMS hulls among the typhoon casualties of 9 October 1945 - including Mine Squadron TWENTY roster-mate YMS 424 ('Grounded - Beyond economical salvage'). YMS-432 does NOT appear anywhere in the damage listing: she was not a recorded casualty of Typhoon Louise at Okinawa.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-10-09 (event date); report compiled November 1945
- Population
- YMS-432 crew (October 1945)
- Limitations
- Absence from a damage appendix establishes only that she was not a recorded typhoon casualty - it does not establish where she was on 9 October 1945 (not every squadron hull was at Okinawa; her station that day is undocumented in located sources). The undigitized deck logs (SL44 coverage runs through 12/31/1945) are the open lead. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-04
-
[6]uboat.net Allied Warships, USS YMS-432 (YMS-432) page - build/disposal data table [other_primary]
- Locator
- uboat.net ship/9851 data table and History lines
- Finding type
- vessel_history
- Finding
- Minesweeper of the YMS class: built by Tacoma Boat Building Co. (Tacoma, Washington); ordered 25 July 1943; laid down 24 March 1944; launched 8 July 1944; commissioned 30 December 1944; 'Stricken on 25 February 1947. Sold on 22 January 1948.' No commands listed.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1948
- Population
- YMS-432 crew (1944-46)
- Limitations
- uboat.net is a compiled secondary database, not a primary registry; its data corroborates NavSource on all shared milestones. 'Sold on 22 January 1948' vs NavSource's 'transferred to the War Shipping Administration 22 January 1948' is a wording variant on the same disposal event (shipbuildinghistory likewise tabulates 'Sold 1948'). The 'ordered 25 July 1943' date rests on this source alone - not verified against a contract record. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-05
-
[7]shipbuildinghistory.com (Tim Colton), 'Tacoma Boat, Tacoma WA' yard page - history paragraph and hull table [other_primary]
- Locator
- tacoma.htm yard history paragraph; hull table row 'YMS 432'
- Finding type
- vessel_history
- Finding
- The Tacoma Boatbuilding yard table carries this hull: 'YMS 432 - US Navy - Minesweeper - 278 [GT] - 136 [ft] - 30-Dec-44 [delivery] - Sold 1948' - corroborating builder, completion/delivery date, and 1948 disposal. Yard history: 'Tacoma Boatbuilding Company was established in 1926 and built many boats in WWII. It grew rapidly in the 70s and early 80s but got into difficulty with several large government contracts and filed for Chapter 11 protection in 1985. It emerged from bankruptcy in 1986 but could not recover and closed in 1992. The facility, which was at 1840 Marine View Drive, was liquidated in 1998.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944 (build); yard history to 1998
- Population
- Tacoma Boatbuilding construction workforce (1944); yard workforce generally (1926-1992)
- Limitations
- Secondary compiled yard table, not a contract record; the table's 278 is a gross-tonnage figure - distinct from NavSource's 270-ton displacement, not a conflict. Documents builder and delivery, contains no asbestos, insulation, or material-spec information for this hull or the yard's wartime output.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-06
-
[8]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-135 through YMS-445 (plus 480-481) were the single-stack variant, which includes YMS-432. The index records the class loss context: 'One of their greatest losses being on 9 October 1945, when seven U.S. YMS' were sunk in a typhoon off Okinawa.' Surviving YMSs still in naval service were reclassified AMS and named in 1947 - YMS-432, stricken 25 February 1947 and already leaving naval custody, was not among them and received no AMS designation or name.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- 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-432-07
-
[9]Era inference built on: NavSource YMS index class description (wood hull, diesel plant); GAO HRD-80-2 program documentation (ev-09); NavSource/uboat.net/shipbuildinghistory build records (Tacoma Boatbuilding Co., 1944) [other_primary]
- Locator
- NavSource YMS index class description; GAO HRD-80-2; NavSource 11/19432.htm; uboat.net ship/9851; shipbuildinghistory tacoma.htm
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel yard minesweeper built 1944 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
- 2026-10-04
- Study period
- 1944-1984
- Population
- Tacoma Boatbuilding construction trades (1944); crew (1944-46); disposal/conversion crews (1948-49); merchant barge service (1949-1984)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, construction specification, or work package located for YMS-432. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull. The 1948-49 disposal and freight-barge conversion (Rande C.) are undocumented material events - no work record located.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-08
-
[10]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2
- 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 (1944) and naval service era (1944-46).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- 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. Full text not retrieved this session (gao.gov returned HTTP 403 to automated fetch, standing defect since Batch-01); the product page is cited and the report's ship-level scope is program-wide.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-09
-
[11]Batch-9073 search ledger (this record): NARA Special List 44 + digitized-log index; NavSource (hull page + class index); NHHC Pacific Fleet organization roster; NHHC CINCPOA typhoon report page; NHHC/DANFS; Naval Vessel Register; uboat.net; shipbuildinghistory yard table; Atlas shipyards.json; Wikipedia; CourtListener opinion and docket search [other_primary]
- Locator
- search_ledger rows sl-uss-yms-432-01 through sl-uss-yms-432-16
- 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-432 was found in the public sources searched; no DANFS entry exists (NavSource states none; NHHC DANFS URLs return 404); no NVR detail page exists (vessel stricken 1947, outside NVR coverage; SHIPDETAILS URL redirects to the NVR root); the deck logs themselves are undigitized. CourtListener: all four prescribed base queries were attempted through the authenticated helper and every attempt was deferred by the shared fleet pacing budget (~58/hr across all running sessions) on 5 tries over ~30 minutes - logged blocked in search_ledger rows sl-uss-yms-432-13 through -16; litigation status is an open gap, not a negative result.
- 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 - 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's material fate after the 1984 de-documentation is unrecorded - she received no material or environmental survey in located records at Navy disposal (1948), merchant conversion (1949), or de-documentation (1984).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-432-10