Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]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. 123: 'YMS-9 9/10/1942 11/30/1942' and 'YMS-9 1/1/1944 7/31/1945'
- Finding type
- historical_record
- Finding
- Special List 44 inventories US Navy deck logs for YMS-9 in two spans: 9/10/1942 through 11/30/1942 and 1/1/1944 through 7/31/1945 - covering her fall-1942 East Coast period (the 1 October 1942 Charleston dry-dock photo falls inside the first span) and her Pacific combat period through the Balikpapan operation (the second span ends a month after the 1 July 1945 landings). The December 1942-December 1943 and post-July-1945 intervals are not covered by located log entries.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1942-1945 (log coverage); inventory published 1978
- Population
- YMS-9 crew, 1942-1945 (log coverage periods)
- 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-9 does not appear on NARA's digitized deck-log index (archives.gov navy-online page searched 2026-10-05), so the logs are an undigitized archival lead only. Both entries verified programmatically on p. 123 of the typeset ship-number PDF (pdftotext extraction): 'YMS-9 9/10/1942 11/30/1942' and 'YMS-9 1/1/1944 7/31/1945'. The prompt's cited coverage (9/10/1942-11/30/1942) is the first of the two spans only.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-9-01
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[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-9 page (build/disposal chronology compiled from Navy Register data; photo captions) [other_primary]
- Locator
- YMS-9 chronology block, specifications block, photo captions (111900901-03)
- Finding type
- vessel_history
- Finding
- YMS-1 Class Auxiliary Motor Minesweeper (call sign Nan-Able-Nan-Item): laid down 4 February 1942 by Henry B. Nevins Inc., City Island, NY; launched 15 June 1942; completed 11 July 1942; struck from the Navy Register 19 June 1946; transferred to the State Department, Foreign Liquidation Commission in October 1947; 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 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. Photo captions document the launch ceremony inside a Nevins building shed (City Island Nautical Museum, via Tom Nye) and the ship in dry dock at Navy Yard Charleston, SC, 1 October 1942 with SC-637, YMS-10, and YMS-49. Page states: 'There is no DANFS history available for YMS-9.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-1947
- Population
- Henry B. Nevins construction trades (1942); YMS-9 crew (1942-46)
- Limitations
- NavSource is a compiled secondary archive of official data, not the underlying registers; the 'fate unknown' disposal line leaves post-NFLC disposition unresolved in located sources. Contains no asbestos information. The Charleston dry-dock photo establishes presence, not activity - no operational detail for 1942-43 is listed.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-9-02
-
[3]uboat.net Allied Warships, USS YMS-9 (YMS-9) page (ship/9429) - build data, commanding-officer table, and action-report-based operational narrative; cited sources: COMTASKGR 74.3 and COMTASKGR 78.2 action reports on Cebu City operations 24-28 March 1945 and the COMTASKGR 78.2/78.2.9 reports on the Balikpapan operation [other_primary]
- Locator
- uboat.net ship/9429 data table, Commands table, 'Notable events' entries dated 15 Sep 1944 (TG 77.3.29), 24 Mar 1945 (TU 78.2.9), 1 Jul 1945 (TU 72.2.92)
- Finding type
- vessel_history
- Finding
- Minesweeper of the YMS class: built by Henry B. Nevins Inc. (City Island, New York); ordered 1 April 1941; laid down 4 February 1942; launched 15 June 1942; commissioned 11 July 1942; stricken 19 June 1946. Commanding officers (WWII): Lt. (jg) Joseph Simpson Hulings, Jr., USNR (11 Jul 1942-mid/late 1943); A. J. D. Paul, USNR (mid/late 1943-early 1944); R. B. White, USNR (early-mid 1944); Lt. B. F. Hildes, USNR (mid 1944-mid 1945); Lt. (jg) Willmont Edward Vermillion, USNR (mid 1945-). Documented operations: (1) Operation Tradewind, the 15 September 1944 Morotai amphibious landing - Task Group 77.3.29 minesweepers: YMS-8, YMS-9 (Lt. (jg) Hildes), YMS-46, YMS-51; (2) Cebu landings, Operation Victor II, 24-28 March 1945 - Task Unit 78.2.9 minesweeping unit under YMS-68 (Lt. O'Neil commanding): YMS-9 (Lt. Hildes), YMS-46, YMS-52, YMS-313, YMS-339, YMS-340, YMS-481; the unit swept the southern approaches to Cebu Harbour (area 'Stagedoor') to 15 feet on 28 March with negative results; (3) Operation Oboe II, the 1 July 1945 Balikpapan landings - TG 78.2.9 Minesweeping Unit (Lt. Cdr. Fonick, COMMINDIV 34, in USS Sentry), Task Unit 72.2.92 (Lt. Cdr. Blakeslee) comprising 25 YMS including YMS-9 (Lt. (jg) Vermillion), with USS Cofer and USS LSM-1 as tenders; pre-'Fox' day sweeping ran under enemy shore-battery fire and cost sisters YMS-50 (18 Jun), YMS-365 and YMS-39 (26 Jun) to mines.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-1946
- Population
- YMS-9 crew under successive USNR lieutenants (1942-45); multi-YMS minesweeping-unit populations at Morotai, Cebu, Balikpapan
- Limitations
- uboat.net is a compiled secondary database, not a primary registry; its narrative cites official action reports (COMTASKGR 74.3 Cebu; COMTASKGR 78.2 and 78.2.9 Balikpapan) but the reports themselves were not retrieved this session - each unit assignment and date rests on this compiler's transcription. YMS-9 appears in the three task-organization listings; she is not individually named in the daily sweep narrative (the mined/under-fire incidents name sister boats, not this hull). 'Ordered 1 Apr 1941' rests on this source alone - not verified against a contract record (see gaps). 'Commissioned 11 Jul 1942' vs NavSource 'Completed 11 July 1942' is a wording variant on the same date. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-9-03
-
[4]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-1 through YMS-134 were the two-stack variant, which includes YMS-9 - built at the design yard itself. The index records early-class employment: 'Records show that YMS' were used in the United States Navy to sweep mines laid by enemy subs as early as 1942 off the ports of Jacksonville, FL and Charleston, SC.' Surviving YMSs still in naval service were reclassified AMS and named in 1947 - YMS-9, stricken June 1946 and transferred to the Foreign Liquidation Commission in 1947, was not among them and received no AMS designation or name.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1941-1969
- Population
- YMS-class crews and builders, 1941-1969 (class context)
- Limitations
- Class-level design and employment 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. The 1942 Charleston/Jacksonville sweeping note is a class-level statement - consistent with, but not proof of, this hull's fall-1942 Charleston employment; her 1 Oct 1942 Charleston presence rests on the NavSource photo caption. Does not establish presence or absence of residual asbestos components (gaskets, wiring, brake linings).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-9-04
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[5]Era inference built on: NavSource YMS index class description (wood hull, diesel plant); GAO HRD-80-2 program documentation (ev-06); NavSource/uboat.net build records (Henry B. Nevins Inc., 1942) [other_primary]
- Locator
- NavSource YMS index class description; GAO HRD-80-2; NavSource 11/19009.htm; uboat.net ship/9429
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel yard minesweeper built 1942 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
- 2026-10-05
- Study period
- 1941-1947
- Population
- Henry B. Nevins construction trades (1942); crew (1942-46); Navy Yard Charleston dry-dock period (Oct 1942); FLC disposal receivers (1947)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, construction specification, or work package located for YMS-9. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-9-05
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[6]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 (1942) 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 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 product page cited; the report's ship-level scope is program-wide).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-9-06
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[7]Batch-9173 search ledger (this record): NARA Special List 44 + digitized-log index; NavSource (hull page + class index); uboat.net; NHHC Pacific Fleet organization roster; NHHC/DANFS; Naval Vessel Register; shipbuildinghistory yard coverage; shipyards.json; Wikipedia; CourtListener opinion and docket search [other_primary]
- Locator
- search_ledger rows sl-uss-yms-9-01 through sl-uss-yms-9-18
- 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-9 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 1946, outside NVR coverage; SHIPDETAILS URL bounces to the NVR root); the deck logs themselves are undigitized. CourtListener: all four base queries completed (2026-10-05) plus three asbestos-qualified variants justified by overflow - 'USS YMS-9' opinion count 12 (11 OCR/tokenization noise plus one real YMS-vessel case: United States v. Standard Oil Co., S.D.N.Y. 1948, an admiralty collision suit naming sister hull YMS-12, not this vessel and not asbestos); 'USS YMS-9' docket count 2,656 and 'YMS-9' opinion 493 and docket 33,042 (page-1 results inspected, all tokenization noise on unrelated dockets); 'YMS-9'+asbestos opinion count 12 (all noise), 'YMS-9'+asbestos docket count 2,082 and 'USS YMS-9'+asbestos docket count 294 (generic asbestos-docket pool - MDL-875, W.R. Grace bankruptcy - matching incidental tokens; no case names or verified mention of this vessel). No qualifying asbestos litigation naming this hull.
- 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 - WWII-era diesel auxiliaries still carried asbestos in some components (gaskets, electrical insulation, brake linings); it establishes only that nothing ship-specific is published. CourtListener docket matches are BM25 term matches across whole dockets: a hit does not verify where 'YMS-9' appeared in a multi-thousand-entry docket, and even a plaintiff ship-schedule mention would be a pleading-stage allegation, not a finding - classified down accordingly. Her post-1947 fate is unresolved, so no disposal-era material record exists either.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-9-07