Evidence
12 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-12).
-
[1]research packet 1049-packet.md (2 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (thin sourcing
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Limitations
- qualifier: VERIFIED (thin sourcing
- Evidence ID
- uss-yms-303-yms303-pkt-1049-packet-md
-
[2]NavSource Online, Mine Warfare Vessel Photo Archive, YMS-303 (verified live 2026-10-04) [other_primary]
- Locator
- YMS-303 page header, construction/disposition block, call-sign line, and photo caption (111930301.jpg)
- Finding type
- vessel_history
- Finding
- NavSource's live YMS-303 hull page identifies this vessel as a YMS-1-class auxiliary motor minesweeper: laid down 13 May 1942 by the Rice Brothers Corp., East Boothbay, ME; launched 21 July 1943; completed 11 August 1943 and commissioned USS YMS-303; struck from the Naval Register 19 July 1946; transferred to the War Shipping Administration in October 1947; registered to Russell Wolf of Harvey, LA as the miscellaneous vessel Wolf III out of New Orleans, LA; fate unknown. The page gives call sign Nan-Peter-Item-Charlie, carries a launch-day photograph dated 21 July 1943, and states that no DANFS history is currently available for YMS-303.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1949
- Population
- Rice Brothers Corp. construction trades (1942-43); YMS-303 crew; War Shipping Administration custodians; merchant owner/crew
- Limitations
- NavSource is a specialist photographic/archive compilation rather than a Navy register or DANFS entry; the page does not give a decommissioning date or post-merchant-registry disposition. It contains no asbestos or material-content statement.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-01
-
[3]National Archives, Special List #44, by Ship Numbers, PDF entry for YMS-303 [other_primary]
- Locator
- PDF page 118 of 137: row 'YMS-303 8/20/1943 6/30/1945' (verified against the live PDF, page-118 extraction)
- Finding type
- historical_record
- Finding
- The National Archives Special List 44, by Ship Numbers, lists a YMS-303 deck-log coverage row: 20 August 1943 - 30 June 1945. The entry is an archival inventory of log coverage held by NARA; it does not assert commissioning or decommissioning dates, and the logs themselves were not retrieved or read.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-08-20 to 1945-06-30
- Population
- YMS-303 crew and Navy operational activity during the indexed log period
- Limitations
- This is a finding aid, not the deck-log text. The logs were not retrieved or read, and the index entry contains no asbestos, insulation, exposure, or individual-service finding. Per NARA's own asbestos research guide, deck logs provide no direct evidence of asbestos.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-02
-
[4]U.S. Bureau of Ships, Ships' Data, U.S. Naval Vessels, Vol. II: Mine Vessels (less CM & DM), Patrol Vessels, Landing Ships and Craft, NAVSHIPS 250-011 (15 April 1945), Motor Mine Sweepers (YMS) allocation table [other_primary]
- Locator
- YMS allocation table, Rice Bros. Corporation (East Boothbay, Maine) builder block: row 'YMS303 ... 136 0 ... 24 6 ... 1,000' (verified against the live shipscribe.com PDF, 38,520,486 bytes)
- Finding type
- historical_record
- Finding
- The Bureau of Ships' official Ships' Data, U.S. Naval Vessels, Vol. II (NAVSHIPS 250-011, 15 April 1945) lists YMS-303 in its allocation table: official length 136 ft 0 in, breadth 24 ft 6 in, 1,000 shaft horsepower, diesel-reduction drive, built by Rice Bros. Corporation, East Boothbay, Maine - the hull appears inside the contiguous Rice Bros. builder block (YMS-300 through YMS-309 run) with adjacent hulls marked 'do.' under the same builder attribution.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-04-15 (publication); 1942-43 (construction)
- Population
- Rice Brothers Corp. construction trades (1942-43); YMS-303 crew
- Limitations
- Official BuShips reference data confirming builder, dimensions, and shaft horsepower for this hull; the table gives no material-content or insulation information and names no asbestos product. The shipscribe.com scan is a facsimile of the official publication (Stanford University Libraries copy digitized via Google Books program).
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-03
-
[5]Department of the Navy, Navy and Marine Corps Awards Manual, NAVPERS 15,790 (Rev. 1953), Part IV, Sections on eligible engagement stars (verbatim HyperWar transcription) [other_primary]
- Locator
- Part IV ship list, 'YMS 303' entry; engagement-code tables (E7 Invasion of Southern France; P207-20 Fusan, Kyushu-Korea Area) in the same manual transcription
- Finding type
- vessel_history
- Finding
- The Department of the Navy's Navy and Marine Corps Awards Manual (NAVPERS 15,790, Rev. 1953), Part IV 'List of Ships and Units Eligible for Engagement Stars,' credits YMS-303 with two engagement-star entries: 'YMS 303: 15 Aug 44 - 25 Sep 44 E7; 13 Jan 46 - 28 Jan 46 P207-20.' The manual's code tables define E7 as Invasion of Southern France (15 Aug - 25 Sep 44, European-African-Middle Eastern area) and P207-20 as Fusan (Kyushu-Korea Area) minesweeping operations (operation window 28 Sep 45 - 29 Jan 46, Asiatic-Pacific area). This documents participation in the Operation Dragoon minesweeping campaign in 1944 and in post-surrender mine clearance off southern Korea in January 1946.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-08-15 to 1944-09-25; 1946-01-13 to 1946-01-28
- Population
- YMS-303 crew during the credited participation windows
- Limitations
- Official awards-manual transcription hosted on HyperWar (ibiblio.org), a reputable mirror; the manual documents campaign participation eligibility, not the ship's day-to-day positions or any material/exposure condition. No asbestos content. The awards manual is a Department of the Navy publication; HyperWar is a transcription, not the issuing agency's own site.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-04
-
[6]uboat.net, Allied Warships, USS YMS-303 (YMS-303) - convoy GUS-45 event record (verified live 2026-10-04) [other_primary]
- Locator
- YMS-303 warship page: ship data block and 'Notable events' convoy GUS-45 chronology (10-11 July 1944)
- Finding type
- vessel_history
- Finding
- uboat.net's Allied Warships entry for YMS-303 documents convoy GUS-45 (Port Said to Hampton Roads): on 10 July 1944 the minesweeper USS YMS-303 (Lt. S. Emien, 3rd, USNR) joined the convoy's American escort group at Bizerta alongside USCGC Taney (carrying Commander Task Force 66), escort tanker USS Cossatot, and ten destroyer escorts; on 11 July 1944 YMS-303 was detached to Bougie. The same page gives construction data consistent with NavSource (Rice Brothers Corp., laid down 13 May 1942, launched 21 July 1943, commissioned 11 August 1943, stricken 19 July 1946).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-07-10 to 1944-07-11
- Population
- YMS-303 crew under Lt. S. Emien, 3rd, USNR (July 1944)
- Limitations
- uboat.net is a specialist secondary research compilation (Gudmundur Helgason) built from published convoy and war-diary records; it does not display its underlying primary citation on this page. The Mediterranean placement is independently corroborated by the NAVPERS 15,790 engagement-star entry for Southern France one month later (ev-04). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-05
-
[7]NavSource Online, Mine Warfare Vessel Photo Archive, YMS-303 specifications block [other_primary]
- Locator
- YMS-303 specifications block (Navy and 1949-registration columns)
- Finding type
- historical_record
- Finding
- The hull page's specifications block lists YMS-303: 270 tons displacement; 136 feet length; 24 feet 6 inches beam; 8 feet draft; 15-knot speed; complement 32; armament one 3-inch/50 dual-purpose mount, two 20-mm mounts, and two depth-charge projectors; propulsion two 880-bhp General Motors 8-268A diesel engines through Snow and Knobstedt single-reduction gear to two shafts. A second '1949' registration column reflects her post-Navy merchant survey: 253 tons, 125.2-foot length, 24.8-foot beam, 11.6-foot draft, complement 10.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1949
- Population
- YMS-303 crew and machinery personnel; merchant registrants
- Limitations
- The listed complement is a specification figure, not a dated muster count; the 1949 column reflects merchant-registry measurement, not naval characteristics. Diesel machinery and the absence of a steam plant in this source constrain the plausible system context but do not establish asbestos content in any component.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-06
-
[8]United States Pacific Fleet Organization, 1 May 1945 (NHHC publication; HyperWar transcription, ibiblio.org) [nhhc_danfs]
- Locator
- Minecraft/YMS rosters throughout document; no YMS-303 entry anywhere (YMS-301, -302 and other hulls listed)
- Finding type
- historical_record
- Finding
- The official United States Pacific Fleet Organization document dated 1 May 1945 (HyperWar transcription of the NHHC publication) does not list YMS-303 anywhere in its order of battle, while enumerating approximately 170 other YMS hulls under the minecraft sections. YMS-303's absence from the enumerated Pacific roster is documented; the document does not state where the ship was assigned on that date.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-05-01
- Population
- YMS-303 crew (assignment context, May 1945)
- Limitations
- Absence from an enumerated fleet-organization roster is a fact about the document, not proof of the ship's location or status on that date - the document does not enumerate vessels under local commands or non-Pacific fleets, and Mediterranean or local-assignment duty would not appear. The live NHHC URL for this publication returned HTTP 404 on 2026-10-04; the verbatim HyperWar transcription was used. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-07
-
[9]National Archives, Researching Asbestos aboard US Naval Vessel up through 1961 [other_primary]
- Locator
- RG 19 Entry P 11 series listing; 'Other Records and their usefulness' deck-log/muster-roll paragraph (verified live 2026-10-04)
- Finding type
- regulatory
- Finding
- NARA's official research guide identifies RG 19 Bureau of Ships records - including Entry P 11, Minesweeper and Minelayer General Information Books (1940-1962) - plus specification files and engineering drawings as the archival pathways for researching asbestos aboard U.S. Navy vessels through 1961. The guide states that Navy deck logs and muster rolls (RG 24) 'do not provide any information on the use of or presence of asbestos in Navy ships or ship components and therefore provide no direct evidence of asbestos.' These records are the appropriate next archival lead for YMS-303; no such hull-level file was retrieved for this record.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-04
- Study period
- 1940-1962
- Population
- U.S. Navy vessel material records, 1940-1962
- Limitations
- This row documents a research path, not the existence of asbestos aboard YMS-303. The cited guide does not substitute for retrieving the hull/class specifications, drawings, or correspondence, and it expressly prevents treating the Special List 44 deck-log entry as asbestos evidence.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-08
-
[10]Occupational Safety and Health Administration, Shipbuilding and Ship Repair: Process - Outfitting [other_primary]
- Locator
- Outfitting page, asbestos paragraph under Description (verified live 2026-10-04 via browser-agent fetch; automated reader returned HTTP 403)
- Finding type
- asbestos_application
- Finding
- OSHA's shipbuilding and ship-repair guidance for outfitting states that asbestos was used in two operations: '(1) insulating piping and exhaust manifolds; and, (2) fire-proofing (combined with other linings) for living and working areas,' and that severe exposures occur during repair when insulation is removed. This is relevant early-1940s shipbuilding context for a 1942-43 Navy minesweeper built at a commercial yacht yard.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1942-1947 (applicable build/service era)
- Population
- Shipbuilding outfitting and repair trades (era context)
- Limitations
- General shipyard guidance, not a YMS-303 record. It does not establish that any listed product was installed aboard this wooden-hulled minesweeper, does not establish quantity or condition, and does not establish an individual's exposure or causation.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-09
-
[11]U.S. Government Accountability Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979) [gao]
- Locator
- GAO product page HRD-80-2, Highlights section (verified live via firecrawl 2026-10-04; direct automated fetch returned HTTP 403; 26-page full report PDF not retrieved)
- Finding type
- gov_survey
- Finding
- GAO's 1979 review of Navy efforts to protect workers from asbestos exposure documents that the Navy used asbestos insulation aboard ships, that its 1975 policy was to remove and replace with nonasbestos materials only insulation that was damaged or had to be removed for necessary repairs, and that the policy was modified in 1979 to include selectively replacing asbestos insulation in high-maintenance areas.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1943-1979
- Population
- Navy shipyard workers and Navy vessels covered by the 1979 review
- Limitations
- Program-level Navy evidence, not a YMS-303 record. It supports era context only and does not prove installation, location, condition, disturbance, quantity, exposure, or causation aboard this hull. The full report PDF was not retrieved in this session; the finding asserts only the official product-page summary content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-10
-
[12]Batch-8930 source review: NavSource YMS-303; NARA Special List 44; BuShips Ships' Data Vol. II; NAVPERS 15,790; uboat.net GUS-45 record; U.S. Pacific Fleet Organization 1 May 1945; NARA asbestos research guide; OSHA outfitting; GAO HRD-80-2 [other_primary]
- Locator
- Search ledger rows sl-uss-yms-303-yms303-01 through -18
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record was located in the public sources searched for YMS-303: the NavSource hull page, NARA deck-log finding aid, BuShips Ships' Data allocation table, NAVPERS 15,790 engagement-star list, convoy record, 1 May 1945 Pacific Fleet organization, NARA asbestos research guide, OSHA outfitting guidance, and GAO Navy-wide review provide no YMS-303 asbestos survey, abatement contract, hazmat disclosure, material schedule, product identification, or adjudicated exposure finding. Ship-specific asbestos status is therefore unknown.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- A failure to locate a public record does not prove absence of asbestos aboard the hull. Undigitized RG 19 Entry P 11 minesweeper general-information books, specification files, engineering drawings, and the indexed 1943-45 deck logs remain open leads. This negative finding does not establish or defeat any exposure claim or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-303-yms303-11