Evidence
15 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-15).
-
[1]research packet 1054-packet.md (2 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-335-yms335-pkt-1054-packet-md
-
[2]National Archives and Records Administration, Special List #44 - List of Logbooks of US Navy Ships, Stations, and Miscellaneous Units, 1801-1947, ship-number edition (RG 24, Bureau of Naval Personnel deck logs, Entry 118, NAID 581208) [other_primary]
- Locator
- sl-44-ship-number.pdf, PDF p. 119, 'Special List #44, by Ship Numbers' - YMS-335 row (4/9/1943 - 6/30/1945)
- Finding type
- historical_record
- Finding
- NARA's official inventory lists deck logs for YMS-335 covering 4/9/1943 - 6/30/1945. The begin date coincides with her completion/commissioning date; the 6/30/1945 end date is an inventory coverage cut-off seen across many SL44 entries, not a service endpoint - the vessel remained in US service to 1947 and was transferred in 1948.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1945 (log coverage)
- Population
- Crew recorded in wartime deck logs (1943-1945 coverage window)
- Limitations
- Establishes that deck logs for this hull exist in NARA custody (RG 24 Entry 118) and their coverage dates - NOT that the logs are digitized: YMS-335 does not appear on the NARA 'Navy Deck Logs Available in the National Archives Catalog' list (only AMS-named sisters are digitized). The 4/9/1943 begin date supports but does not itself state the commissioning date. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-01
-
[3]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-335 page - construction milestones, specification block, disposal [other_primary]
- Locator
- NavSource 11/19335.htm - vessel history block and specifications block
- Finding type
- vessel_history
- Finding
- Documented for this hull: 'YMS-1 Class Auxiliary Motor Minesweeper: Laid down, 8 July 1942 by the Seattle Shipbuilding and Dry Dock Co., Seattle, WA; Launched, 21 November 1942; Completed, 9 April 1943; Struck from the Naval Register, 16 September 1947; Transferred to the Philippines on loan, 26 May 1948; Transferred outright, 2 July 1948. Fate unknown.' Page header: 'YMS-335 served the Navies of the United States and the Philippines'; call sign November-Quebec-Juliet-November. Specifications: Displacement 270 t.; Length 136'; Beam 24'6"; Draft 8'; Speed 15 kts; Complement 32; Armament one single 3"/50 gun mount, two 20mm, two dcp; Propulsion two General Motors diesel engines, two shafts. Page notes 'There is no DANFS History currently available for YMS-335.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1948
- Population
- Seattle Shipbuilding construction trades (1942-43); USN crew (~32, 1943-1948)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track NVR/DANFS but are unverified against a primary register for this hull. 'Completed' vs 'commissioned' wording noted (SL44 log start corroborates 9 April 1943 as in-service date). Spec block conflicts with class index on displacement, draft, speed, and complement (see gaps). Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-02
-
[4]SS Arkansan / Cape San Juan research site, USS YMS-241 movement reconstruction (explicitly built from war diaries of other vessels and bases; no YMS-241 war diary survives on Fold3) [other_primary]
- Locator
- ssarkansan.com USS YMS-241 page, 'Pre-Cape San Juan History' chronology (Jul-Oct 1943 entries naming YMS-335)
- Finding type
- vessel_history
- Finding
- A war-diary-based movement reconstruction names YMS-335 in YMS-241's company for the 1943 Pacific transit: 11 July 1943 departed San Francisco as Convoy 2275 escort (with USS Hovey (DMS-11), SC-727, YMS-266, YMS-335, YMS-242, YMS-288, screening five merchantmen) bound for Honolulu; arrived Pearl Harbor 22 July 1943; 1 August 1943 assigned Task Force 56 and sailed for Noumea via Palmyra, Tutuila, and Suva (with YMS-241, YMS-266, YMS-242, SC-727), arriving Noumea 24 August 1943; 28 October 1943 arrived Nandi, Fiji, having escorted tanker SS Quebec.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-07 to 1943-10
- Population
- YMS-335 crew on convoy-escort and transit legs (Jul-Oct 1943)
- Limitations
- A careful but private research compilation - each leg is assembled from other vessels' and bases' war diaries rather than this hull's own diary; individual dates unverified against the deck logs themselves (held at NARA, undigitized). Establishes the ship's 1943 movement into the Southwest Pacific theater that frames the 1944-45 combat record. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-03
-
[5]DANFS, Mount Hood I (AE-11) - Naval History and Heritage Command (live page verified 2026-10-04; NHHC applies user-agent filtering, 200 to browser agents) [nhhc_danfs]
- Locator
- DANFS Mount Hood I (AE-11) entry, paragraph listing damaged vessels
- Finding type
- vessel_history
- Finding
- DANFS documents that on 10 November 1944, when USS Mount Hood (AE-11) exploded at Seeadler Harbor, Manus, Admiralty Islands, 'the concussion and metal fragments caused casualties and varying degrees of damage to ships and small craft within 2,000 yards' - and lists motor minesweeper YMS-335 among the vessels damaged (with 16 sister YMS hulls including YMS-1, -39, -49, -52, -71, -81, -140, -238, -243, -286, -293, -319, -340, -341, -342). YMS-335 was therefore present in Seeadler Harbor on 10 November 1944 and sustained blast damage.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-11-10
- Population
- YMS-335 crew present at Seeadler Harbor, Manus (10 Nov 1944)
- Limitations
- NHHC names the hull in a damaged-vessels list for another ship's disaster - it establishes presence and blast damage at Seeadler Harbor, not the extent: degree of damage and casualty figures come from the reproduced loss report (ev-05). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-04
-
[6]USN report on the loss of USS Mount Hood (AE-11), Seeadler Harbor, 10 November 1944 - damage/casualty table to accompanying vessels (reproduced verbatim in the HyperWar war-document collection, ibiblio; issued 'By direction' with cc: CNO) [other_primary]
- Locator
- ae11-Loss.html, 'Disaster of 10 November 1944' section, damage table row for YMS-335
- Finding type
- historical_record
- Finding
- The official damage-and-casualty table for the Mount Hood explosion lists 'YMS-335 - 60' under 'Extent of Damage (Estimated man hours required to effect repairs)', with no entries in the Known Dead, Missing, or Injured columns. Blast damage to this hull was thus estimated at 60 man-hours of repair work, with no personnel casualties attributed.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-11-10
- Population
- YMS-335 crew (uninjured in this event); any repair trades who worked the hull afterward at Manus
- Limitations
- Quantifies ship damage, not human exposure, and says nothing about materials disturbed - a 60-man-hour repair estimate does not identify which systems were damaged or whether repair work disturbed any insulation. Reproduced primary document on a reputable war-document mirror; document header carries 'By direction' signature and cc: CNO. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-05
-
[7]NHHC, Seventh Amphibious Force - Command History 1945 (official USN command history, Online Reading Room), 'Borneo Minesweeping Operations' section [nhhc_danfs]
- Locator
- Command History 1945, 'Borneo Minesweeping Operations' (pp. II-53 to II-55 sequence) and Balikpapan summary table
- Finding type
- vessel_history
- Finding
- The official command history names this hull under fire: 'On three successive days commencing 20 June, YMS 368 was damaged by mine explosion, and YMS 335 and YMS 10 were hit by enemy shell fire.' It also documents that 'the wooden hulled YMSs were selected to do the magnetic minesweeping' at Balikpapan - corroborating wood-hull construction for the type in an official source - and that minesweeping commenced 15-16 June 1945 (16 days before the 1 July assault) with the YMS force growing to 3 AMs and 38 YMS. The operation summary records 7 personnel killed and 43 wounded in action across the Balikpapan minesweepers.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-06-15 to 1945-07-07
- Population
- YMS-335 crew under shore-battery fire (20-22 Jun 1945 window); Balikpapan minesweeping force (7 KIA, 43 WIA total)
- Limitations
- Official but compressed narrative - 'three successive days commencing 20 June' groups the YMS-368 mine damage (20 Jun), YMS-335 shell hit (21 Jun per the action-report chronology, ev-09) and YMS-10 hit (22 Jun). The summary's 7 KIA/43 WIA covers the whole minesweeping force, not this hull alone. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-06
-
[8]NHHC, H-Gram 051-1 'The Last Sacrifices' (Director's Corner official publication) - Balikpapan minesweeping narrative [nhhc_danfs]
- Locator
- H-Gram 051-1, Balikpapan narrative paragraphs (events of 19-28 June 1945)
- Finding type
- vessel_history
- Finding
- NHHC's official H-gram on the Balikpapan minesweepers - 'the most dangerous [operation] for the minesweepers' of the war - records: 'On 20 June 1945, YMS-368 was damaged by a mine. Then YMS-335 was hit by shore battery fire and suffered four men killed but did not sink.' Context: the minesweeping force arrived off Balikpapan 16 June 1945 (initially 16 YMS, growing to 3 AMs and 38 YMS), facing 93 air-dropped Allied influence mines, Japanese fields, and 75mm shore batteries; by 28 June only 12 YMSs remained operational.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-06-16 to 1945-07-01
- Population
- YMS-335 crew and 3"/50 gun crew (4 killed, 21 Jun 1945)
- Limitations
- Confirms 'four men killed' for this hull in an NHHC-official publication; the H-gram's 'On 20 June ... Then' sequencing compresses dates (the action-report chronology and memoir place the hit on 21 June - carried in gaps as a minor variance). Does not itemize wounded (action report gives five). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-07
-
[9]Navy-Marine Corps Awards Manual (rev. 1953), Part 2 Unit Awards - Presidential Unit Citation, Group II listing (official awards register, NHHC Online Reading Room) [nhhc_danfs]
- Locator
- Pt. 2 Unit Awards, 'PRESIDENTIAL UNIT CITATION - Continued (GROUP II)' table, Task Unit 78.2.9 row
- Finding type
- historical_record
- Finding
- The official awards register names USS YMS-335 among the 22 vessels of Task Unit 78.2.9 (with USS Sentry AM-299, Scout AM-296, Scuffle AM-298, and YMS-9, -10, -39, -46, -47, -49, -50, -52, -53, -95, -196, -314, -315, -336, -339, -364, -365, -366, -368, -392) under the Presidential Unit Citation (Group II list) for '15 Jun-1 Jul 45 - Balikpapan, Borneo, Netherlands East Indies.' This hull thus holds a documented Presidential Unit Citation for the operation in which she took her shell hit and casualties.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-06-15 to 1945-07-01 (award period); register published 1953
- Population
- TU 78.2.9 crews, incl. YMS-335 (~32)
- Limitations
- A unit award to TU 78.2.9 as an entity - YMS-335 is explicitly named in the official listing, which is ship-specific documentation of the award, though the citation honors the task unit collectively rather than this vessel individually. Does not establish any individual crewmember's award or exposure. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-08
-
[10]uboat.net Allied Warships, USS YMS-335 (YMS-335) - build/order data and Operation Oboe II (Balikpapan) event narrative reproducing the Task Unit 78.2.9 wartime action-report chronology [other_primary]
- Locator
- uboat.net ship/9755.html - specification table and 'Notable events' Oboe II chronology (entries of 20-30 June 1945)
- Finding type
- vessel_history
- Finding
- YMS-335 operated with the YMS minesweeping unit (TU 78.2.9) in the pre-landing phase of Operation Oboe II, the Allied landings at Balikpapan, Borneo (Fox day 1 July 1945). The reproduced action-report chronology records: 'At 1455I/21, USS YMS-335 was struck by a shell on her 3" gun platform. She sustained four killed and five wounded' (21 June 1945); and on 23 June 1945, after USS YMS-368 was damaged by a mine explosion, 'She was taken in tow by USS YMS-335 and they departed for Tawi Tawi.' Build block: ordered 11 April 1942; laid down 8 July 1942; launched 21 November 1942; commissioned 9 April 1943; stricken 16 September 1947.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-06-15 to 1945-07-01 (pre-landing phase); build block 1942-1947
- Population
- YMS-335 crew, incl. 3"/50 gun crew (4 killed, 5 wounded 21 Jun 1945); towing crew 23 Jun 1945
- Limitations
- uboat.net is a specialist secondary database, not a primary repository - but its event narrative reproduces USN action-report prose (date-time-group format) and its casualty figure is now corroborated by two NHHC-official sources (ev-06, ev-07) plus a Navy League memoir citing the TG 78.2 action report. The five-wounded figure and the YMS-368 tow rest on the action-report transcript alone. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-09
-
[11]NavSource Online: Mine Warfare Vessel Photo Archive, Auxiliary Motor Minesweeper (YMS) class index - class characteristics and construction program [other_primary]
- Locator
- NavSource 11/19idx.htm - class narrative and 'Auxiliary Motor Minesweepers (YMS-1 to YMS-481)' specification block
- Finding type
- vessel_history
- Finding
- Class documentation: the YMS-1-class auxiliary motor minesweeper was a 136-foot, wood-hulled type - 481 ships of identical general characteristics built at 35 yacht yards (plus 80 BYMS for Lend-Lease), first hull YMS-1 laid down 4 March 1941 at Henry B. Nevins, City Island NY. Class specification block: 136' LOA, 24'6" beam, 320 tons displacement, 6'1" max draft, complement 33, one 3"/50 and two 20mm mounts, designed speed 12 knots, two General Motors 8-268A diesel engines on two shafts (880 designed shp). YMS-135 through 445 carried a single stack (YMS-335 sits in that group). Surviving YMS hulls were reclassified AMS with bird names in 1947; YMS-335 was stricken before receiving a name.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1946 (class construction)
- Population
- WWII YMS crews (class context); wooden-yacht-yard construction workforce (35 yards)
- Limitations
- Class-level description, not a hull record - no material or insulation itemization appears even at class level. Spec block conflicts with the YMS-335 hull page on displacement (320 vs 270 t), draft (6'1" vs 8'), speed (12 vs 15 kts), and complement (33 vs 32) - carried in gaps. Wooden hull + diesel plant corroborated independently by the Seventh Amphibious Force command history ('wooden hulled YMSs'). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-10
-
[12]Era inference built on: NavSource class specification (wood hull; 2 x GM 8-268A diesels, 2 shafts); NavSource hull page (two GM diesels, two shafts); Seventh Amphibious Force command history ('wooden hulled YMSs'); absence of any steam plant aboard the type [other_primary]
- Locator
- NavSource 11/19335.htm spec block; NavSource 11/19idx.htm class spec block; Seventh Amphibious Force command history 'wooden hulled YMSs' passage
- Finding type
- asbestos_application
- Finding
- A wood-hulled, diesel-powered auxiliary minesweeper of 1942-43 construction carries a materially smaller asbestos-relevant plant than a steam combatant: no boilers, no steam lines, no turbines - the boiler/turbine lagging pathway does not exist aboard this type. Era-standard applications aboard such a vessel were limited to diesel exhaust lagging and muffler insulation, machinery-space thermal insulation, gaskets and valve packing in fuel/cooling systems, electrical insulation, and possibly asbestos-cement sheet in switchboard or magazine partitions - consistent with Navy-wide insulation practice of the era, but undocumented for this class and hull.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1942-1948 (US documented period)
- Population
- Seattle Shipbuilding trades (1942-43); USN engine-room and maintenance crew (1943-48); unknown Philippine-era workforce (1948-?)
- Limitations
- Class/era inference only - NO ship-specific or even class-level insulation survey, material list, or work package was located for any YMS hull. Wooden construction and diesel propulsion narrow but do not eliminate the pathway: diesel exhaust/muffler lagging and electrical insulation of the era commonly contained asbestos. Names era-standard applications, not confirmed installed materials; no quantity; no manufacturer attribution.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-11
-
[13]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 US construction and service era (1942-1948).
- 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 oriented to Navy shipyards and steam-era combatants; for a wood-hulled diesel minesweeper the asbestos footprint was small relative to that context. Supports era context only, not any fact specific to this hull. Full text not retrieved (gao.gov blocks automated fetch - same standing defect as BATCH-01/98); content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-12
-
[14]Navy League (Westport CT council) research writeup 'Sinking of USS YMS-365' part 2 (secondary PDF); cross-checked against Navy League 'MEF YMS 339 Chap 7' memoir, the uboat.net action-report transcript, and NHHC H-Gram 051-1 [other_primary]
- Locator
- navyleaguewestct.org 'Sinking of USS YMS 365 part 2.pdf' (mid-June 1945 passage) and 'MEF YMS 339 Chap 7.pdf' (21 June passage); uboat.net ship/9755.html; NHHC H-Gram 051-1
- Finding type
- historical_record
- Finding
- CORRECTION: a Navy League writeup on USS YMS-365 states 'YMS-335 was hit by a shell from a shore battery killing nine members of the '335's gun crew.' The documented figure for the same event (21 June 1945, Balikpapan) is four killed and five wounded - nine total casualties in the gun crew, which the writeup apparently conflated into nine killed. The four-killed figure is confirmed by NHHC's H-Gram 051-1 ('suffered four men killed'), the TG 78.2 action-report chronology ('four killed and five wounded'), and the Navy League MEF memoir ('killing four men,' citing the action report). The four-killed/five-wounded figure is carried.
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-06-21
- Population
- YMS-335 3"/50 gun crew
- Limitations
- Corrects a secondary-source casualty inflation against official sourcing; the underlying TG 78.2 action report itself was not independently fetched (uboat.net transcript + memoir + NHHC H-gram all track it). Not a material or asbestos claim.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-13
-
[15]Batch-8965 search ledger (this record): NARA SL44 ship-number PDF (verified); NARA digitized-logs list (absent); NavSource hull + class index pages; NHHC DANFS Mount Hood I; NHHC Seventh Amphibious Force Command History 1945; NHHC H-Gram 051-1; NHHC Navy-MC Awards Manual rev1953; HyperWar reproduced loss report; uboat.net warship page; ssarkansan.com war-diary reconstruction; Navy League memoir PDFs; Naval Vessel Register (no entry); CourtListener API v4 (4 base queries + 3 permitted asbestos-qualified variants) [other_primary]
- Locator
- search_ledger rows sl-uss-yms-335-yms335-01 through -11
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, insulation itemization, abatement contract, hazmat disclosure, or litigation naming USS YMS-335 was found in the public sources searched (see search_ledger), including CourtListener base queries and permitted asbestos-qualified variants (results classified in the report). The hull's post-1948 disposition is undocumented - no Philippine Navy name, service record, or disposal record was located; NavSource records 'fate unknown,' and a Philippine Mine Warfare Force history (Maritime Review, by a former PN research officer) lists no YMS transfers to the Philippine Navy.
- 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 - era-standard exhaust/electrical insulation applications remain a reasonable era-consistent inference on a small, wood-hulled diesel plant. The post-1948 record is a genuine open gap (foreign transfer, fate unknown), and the deck logs themselves are undigitized. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-335-yms335-14