Evidence
12 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-12).
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[1]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-93 (11/19093.htm) - construction timeline, specifications, disposal, commanding officer [other_primary]
- Locator
- NavSource 11/19093.htm header block, specifications block, commanding-officer table
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 19 December 1941 by Hubbard's South Coast Co., Newport Beach, CA; launched 16 May 1942; completed 21 October 1942; transferred to the War Shipping Administration 19 February 1947 and sold; fate unknown. 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 880 bhp General Motors 8-268A diesel engines, Snow and Knobstedt single-reduction gear, two shafts. Commanding officer listed: LTJG A. H. Bofinger, USNR (1945). Call sign Nan-William-Fox-Tare. No DANFS history exists for YMS-93.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-1947
- Population
- South Coast Shipbuilding trades (1941-42); crew (1942-46)
- Limitations
- NavSource is a volunteer secondary compilation tracking NVR/DANFS conventions - milestones are consistent across sources here but the page is not itself a primary registry. 'Completed' vs 'commissioned' terminology for small craft is loose; the muster roll opens on the same date. Contains no asbestos content. The 1947 WSA transfer is the disposal event, not a strike/decommission date.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-01
-
[2]uboat.net Allied Warships of WWII, USS YMS-93 (YMS-93) - build and disposal data [other_primary]
- Locator
- uboat.net/allies/warships/ship/9513.html ship data block
- Finding type
- vessel_history
- Finding
- Secondary warship reference records for this hull: ordered 1 April 1941; laid down 19 December 1941; launched 16 May 1942; commissioned 21 October 1942; sold on 19 February 1947. Builder given as Hubbards South Coast Co., Newport Beach, California.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-1947
- Limitations
- Volunteer secondary compilation (Guomundur Helgason's Allied Warships), not a primary registry; the 'commissioned' and 'ordered' dates rest on its editorial research. Consistent with NavSource and shipbuildinghistory on all shared dates. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-02
-
[3]shipbuildinghistory.njscuba.net (Tim Colton's Shipbuilding History), Yard Minesweepers roster - YMS-93 hull line and YMS class overview [other_primary]
- Locator
- shipbuildinghistory.njscuba.net/us-navy-small/ym/ - YMS-93 row and class preamble; shipbuildinghistory.com/shipyards/emergencysmall/southcoast.htm - South Coast yard page
- Finding type
- vessel_history
- Finding
- Yard roster carries this hull: YMS-93, South Coast Shipbuilding, Newport Beach CA, 136' LOA, 320 (LDT) tons, delivered 21 October 1942, struck 1947. Class context stated on the same page: 'In the three-year period from the spring of 1942 through the spring of 1945, 35 boatyards turned out 561 wooden-hulled minesweepers. All were of essentially the same design - 136 feet long, with a speed of 13 knots' - the Mk. I boats (YMS-1 through YMS-135 and BYMS-1-30) carried two stacks. Roster line immediately above: sister YMS-92, same yard, 'mined off Okinawa and lost 1945.' The yard's own builder page lists 'YMS 93 | US Navy | Minesweeper | 278 | 136 | 21-Oct-42 | Struck 1947.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-1947
- Population
- South Coast Shipbuilding trades (1941-42)
- Limitations
- Secondary shipbuilding roster compiled from merchant/naval construction records; 'struck 1947' is given without the exact strike date. Tonnage figures vary across its tables (320 LDT roster vs 278 on the yard page) vs NavSource 270 t. - carried as spec conflicts, not resolved. The YMS-92 loss is roster context for the class, not a YMS-93 event.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-03
-
[4]NARA file unit 'YMS-93, 10/21/42-5/1/46' (NAID 192922555), Record Group 24, series Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities, microfilm Roll 8057; 154 images digitized via Ancestry partnership [other_primary]
- Locator
- catalog.archives.gov/id/192922555; recapitulation sheet at image 101 of 154 (frame 32863_255086-00100); NARA College Park, microfilm Roll 8057
- Finding type
- historical_record
- Finding
- The ship's complete muster rolls are digitized and verified to cover her entire commissioned life, 21 October 1942 through 1 May 1946. Image inspection confirms the file unit is this hull: the recapitulation sheet for the quarter ending 30 September 1944 is headed 'of the U.S.S. YMS-93' and records 29 enlisted men carried aboard against an operating allowance of 28 (brought forward 29, no gains or losses in the quarter, 8 advancements in rating). The rolls are the authoritative crew-of-record for every enlisted man who served aboard.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-1946
- Population
- All enlisted crew of record, 1942-1946 (29 aboard at Sep 1944 vs allowance 28)
- Limitations
- Muster rolls establish who was aboard - they are a population record, not an exposure or material record, and contain no asbestos content. Officers are not counted in the enlisted recapitulation total (29 vs allowance 28 is enlisted strength only). Roll closing 5/1/46 brackets, but does not itself document, the out-of-service date.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-04
-
[5]NARA file unit 'USS YMS-93 - War Diary, 4/1-30/43' (NAID 134165682), Record Group 38, series World War II War Diaries, Other Operational Records and Histories, microfilm Roll A318; 31 images digitized via Fold3 [other_primary]
- Locator
- catalog.archives.gov/id/134165682 (RG 38, Roll A318); deck logs per NARA RG 24 deck-log inventory, coverage 10/21/1942-6/30/1945
- Finding type
- historical_record
- Finding
- The ship's own war diary for 1-30 April 1943 survives and is digitized - a 31-image ship-specific operational record from her San Diego-area working-up period. Separate NARA inventories also hold her deck logs for 10/21/1942-6/30/1945 (paper, not digitized in the online catalog; log coverage is not asserted as commissioning/decommissioning dates).
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1943-04
- Population
- crew, April 1943
- Limitations
- Catalog-level verification: the file unit title, series, and container are confirmed; individual diary page contents were not reviewed this session. War diaries document operations and locations - the diary is an open lead for her exact April 1943 movements, not a material or exposure record. Deck-log coverage dates come from NARA's deck-log inventory; the logs themselves are undigitized.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-05
-
[6]National Museum of the Pacific War Oral History Collection (Portal to Texas History, UNT Libraries): 'Oral History Interview with Zane Puckett, February 10, 2006' - transcript, 46/47 p., accession OH01597 [museum_official]
- Locator
- texashistory.unt.edu ark:/67531/metapth1604948 (transcript); companion audio ark:/67531/metapth1608754
- Finding type
- historical_record
- Finding
- Ship-specific firsthand service record: Zane Puckett joined USS YMS-93 as her signalman in August 1943 after transiting the Panama Canal aboard USS PC-602. Per the museum's description, at the Marshall Islands the ship 'patrolled for submarines and accidentally damaged their wooden keel. After repairs at Pearl Harbor, YMS-93 headed for Okinawa in time for the invasion... When the war ended, YMS-93 swept waters off the coast of Japan.' Coverage places include San Diego, Pearl Harbor, the Marshall Islands, Okinawa, and Leyte.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1943-1946
- Population
- Signalman Zane Puckett (aboard Aug 1943 - postwar); ship's company
- Limitations
- Oral-history recollection recorded 61 years after events - strong on lived sequence (Marshalls patrol, keel damage, Pearl Harbor repair, Okinawa, post-surrender Japan sweeping) but not a contemporaneous log; specific dates within the narrative should be checked against the deck logs and war diaries before precise dating is asserted. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-06
-
[7]National Museum of the Pacific War Oral History Collection: 'Oral History Interview with Andrew Bofinger, March 10, 2006' - wartime skipper of YMS-93 [museum_official]
- Locator
- NMPW Oral History Collection (texashistory.unt.edu/explore/collections/NMPW/); item description indexed at exa.ai/library/publication/nj51nzyjycp; NavSource 11/19093.htm CO table
- Finding type
- historical_record
- Finding
- A second firsthand record exists: the NMPW interview with LTJG Andrew H. Bofinger, USNR, her wartime commanding officer (NavSource CO list, 1945). Per the museum's description of the interview, Bofinger received a direct commission as ensign in June 1943 and was assigned as skipper of YMS-93; in early 1944 they went to Hawaii then the Marshall Islands conducting patrols, search-and-rescue, and maintenance sweeping; in 1945 they swept mines off Okinawa's east coast and rescued crewmen from USS England (DE-635); Bofinger was discharged February 1946.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1943-1946
- Population
- LTJG Andrew H. Bofinger, USNR (CO from mid-1943); rescued USS England (DE-635) survivors, May 1945
- Limitations
- Item-level Portal record for the Bofinger interview could not be verified live this session - texashistory.unt.edu search sits behind an ALTCHA bot challenge and Google does not index the item; the description text was read via the Exa index record of the NMPW item (exa.ai/library/publication/nj51nzyjycp). The interview is held in the NMPW Oral History Collection (collection page verified); the item ark is an open lead. The 'March of 1945' Okinawa-sweeping and England-rescue dates as summarized are loose - England sank 9 May 1945; precise timing needs the deck logs. Recollection, not a log; no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-07
-
[8]Navy campaign-participation listing for YMS 93 as transcribed from the Navy and Marine Corps Awards Manual, NAVPERS 15,790 (Rev. 1953), via officialmilitaryribbons.com [other_primary]
- Locator
- officialmilitaryribbons.com/us_navy_ships_world_war_2/uss_yms_1_to_yms_200_world_war_2.html - YMS 93 entries
- Finding type
- historical_record
- Finding
- The NAVPERS-derived listing records YMS 93 in: P34-1 assault and occupation of Okinawa Gunto (2 Apr-30 Jun 45); P35 3d Fleet operations against Japan (5 Jul-31 Jul 45); and post-surrender minesweeping operations P207-6 Kochi-Shikoku (8-16 Sep 45), P207-7 Bungo-Suido (22 Sep-20 Oct 45), P207-18 Fukuoka, Kyushu-Korea area (7 Nov-26 Dec 45), and P207-20 Fusan, Kyushu-Korea area (13-24 Jan 46).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1945-1946
- Population
- crew, Apr 1945 - Jan 1946
- Limitations
- Commercial vendor site transcribing official NAVPERS 15,790 (Rev. 1953) data - the underlying campaign codes are official, the transcription is not a government publication and contains visible typos elsewhere on the page; re-verification against NAVPERS 15,790 itself or the ship's awards card is an open step. Campaign credit establishes presence in an area, not individual exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-08
-
[9]YMS-299 ship's journal (crew-maintained memorial site yms299.org), entry for Sunday, 17 June 1945 [other_primary]
- Locator
- yms299.org/archives/908 - journal entry dated 17 June 1945
- Finding type
- historical_record
- Finding
- A contemporaneous 17 June 1945 journal entry kept aboard sister sweeper YMS-299 records, during shared Okinawa-area sweeping operations: 'YMS-93 got her orders to go back to the States today.'
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1945
- Population
- crew, June 1945
- Limitations
- Transcription of a crewmember's journal on a memorial website - a genuine contemporaneous mention but not an official record. The entry conflicts with the NAVPERS-derived July 1945 3d Fleet operations credit and the post-surrender Japan-area sweeping that Puckett confirms: the orders may have been rescinded, deferred, or referred to a rotation that did not complete. Carried as a gap, not resolved.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-09
-
[10]Era inference built on: NavSource specifications (wooden-hulled YMS-1 class; GM 8-268A diesel plant, no steam); shipbuildinghistory class roster (wooden hulls, yacht-yard construction); GAO HRD-80-2 Navy asbestos-era documentation (ev-uss-yms-93-yms93-10) [other_primary]
- Locator
- NavSource specifications block; shipbuildinghistory class preamble; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel-powered sweeper built 1941-42 sits inside the Navy's documented asbestos-use era. Era-standard applications aboard a small non-steam combatant of this period were engine and diesel-exhaust lagging, machinery insulation in the engine compartment, gaskets and valve packing on fuel/cooling/hydraulic systems, and electrical insulation - modest quantities relative to steam combatants because she carried no boilers or steam plant.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1941-1947
- Population
- South Coast Shipbuilding trades (1941-42); engine-room/engineering crew (1942-46); Pearl Harbor repair trades during keel repair
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, specification sheet, or work package located for YMS-93. Names era-standard applications, not confirmed installed materials; no quantity; no manufacturer attribution. Wooden construction reduces, but does not eliminate, expected asbestos content versus steel steam vessels.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-10
-
[11]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
- 2026-10-05
- 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 blocks automated fetch, HTTP 403, confirmed in prior batch sessions) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-11
-
[12]Batch-9176 search ledger (this record): NavSource; uboat.net; shipbuildinghistory roster and yard page; NARA catalog (muster rolls NAID 192922555, war diary NAID 134165682, context war diaries); NMPW oral histories (Puckett transcript verified; Bofinger item as lead); NAVPERS-derived campaign listing; yms299.org journal; GAO product page; NHHC DANFS index; NVR; secondary litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-93-yms93-01 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-93 was found in the public sources searched (see search_ledger). No DANFS entry exists and NVR carries no record (pre-1987 disposal). CAVEAT: CourtListener could not be queried this session - the fleet-wide pacing budget was spent on four attempts spread across the session; logged as blocked in search_ledger, not as a negative result. Secondary web sweeps surfaced no qualifying case.
- 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 - and the litigation repository search is a genuine open gap (pacing-blocked, not run). The strongest open leads are the undigitized deck logs (10/21/1942-6/30/1945) and the digitized-but-untranscribed April 1943 war diary and full muster rolls - none are material records, but they anchor the crew population for any future exposure research. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-93-yms93-12