Evidence
14 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-14).
-
[1]DANFS, 'SC-601 - SC-700' compiled entry, Naval History and Heritage Command (verified live 2026-10-03) [nhhc_danfs]
- Locator
- SC-632 paragraph within compiled DANFS 'SC-601 - SC-700' page
- Finding type
- vessel_history
- Finding
- DANFS records SC-632 verbatim: 'Built at Mathis Yacht Building Co., Camden, N.J. Keel laid 2/23/42. Launched 6/25/42. Commissioned 9/2/42. Destroyed 3/9/48.' The authoritative milestone record for this hull. NavSource's page note 'There is no DANFS history available for SC-632' refers to the absence of a full narrative entry - this one-line compilation entry exists and was verified live.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Limitations
- Terse milestone record only - DANFS carries no operational narrative for this hull, no sinking/loss entry, no stricken date, and no asbestos or material content. Its 'Destroyed 3/9/48' terminal line conflicts with NavSource's 'Hulk destroyed 9 March 1946' (see gaps) - the loss itself (16 September 1945) is documented by the NHHC casualties list, not by DANFS.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-01
-
[2]NavSource Online: Submarine Chaser Photo Archive, 'SC-632 ex-PC-632' page (navsource.net, verified live 2026-10-03; navsource.org is dead - .net domain used per batch citation rules) [other_primary]
- Locator
- SC-632 page header 'ex-PC-632', 'Sunk 16 September 1945' banner, milestone block, specifications block, commanding-officer table
- Finding type
- vessel_history
- Finding
- NavSource records for this hull: laid down 23 February 1942 by the Mathis Yacht Building Co., Camden, NJ; launched 25 June 1942; commissioned USS PC-632, 2 September 1942; reclassified SC-632 in April 1943; sunk off Okinawa, Ryukyu Islands 16 September 1945; struck from the Naval Register 3 January 1946; hulk destroyed 9 March 1946. Specifications: 148 t.; 110'10" x 17' x 6'6"; 21 kts.; complement 28; armament one 40mm gun mount, two .50 cal. machine guns, two depth charge projector 'Y Guns,' two depth charge tracks; propulsion two 1,540bhp General Motors (Electro-Motive Div.) 16-184A diesel engines, two shafts. Call sign Nan-William-Oboe-Baker. Commanding officer listed: LTJG C. P. Bell, USNR (1945).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Crew of ~28 (complement figure); shipyard trades at the Mathis yard (1942)
- Limitations
- NavSource is a volunteer photographic archive, not an official repository, but its SC milestone/specification data tracks DANFS and NVR conventions and is the most detailed ship-specific record located - it alone carries the PC-632 commissioning designation, the April 1943 reclassification, the 3 January 1946 striking, the 9 March 1946 hulk destruction, the call sign, and the CO line. No service narrative, no casualty count for the sinking, no asbestos content. Its 'no DANFS history' note is stale (see ev-01).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-02
-
[3]NHHC, 'Casualties Navy and Coast Guard Ships' - official list of U.S. Navy vessels sunk or damaged beyond repair in WWII (verified live 2026-10-03) [other_primary]
- Locator
- casualties-navy-and-coast-guard-ships.html, 'Submarine Chaser, (110 foot) (SC)' section, SC-632 line
- Finding type
- vessel_history
- Finding
- The official NHHC casualties compilation records this hull's loss in the 'Submarine Chaser, (110 foot) (SC)' section: 'USS SC-632 sunk off Okinawa, Ryukyu Islands, 16 September 1945.' - the authoritative Navy loss record for this hull, listed alongside sister SC-521 (foundered off Santa Cruz 10 July 1945).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-09-16
- Population
- Crew aboard at loss (Sep 1945)
- Limitations
- Official loss record: date and place only - no cause mechanism (storm vs. other), no casualty count, no position, no rescue or hulk-disposal detail. Does not name the storm; the 16 September 1945 Okinawa typhoon connection rests on the Navy logistics history (ev-04) and secondary compilations (see gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-03
-
[4]RADM Worrall Reed Carter, 'Beans, Bullets, and Black Oil: The Story of Fleet Logistics Afloat in the Pacific During World War II' (official Navy publication, NHHC online reading room; verified live 2026-10-03) [other_primary]
- Locator
- BBBO, service-squadron/Buckner Bay occupation-period section (storms passage); NHHC 'Pacific Typhoon October 1945 - Okinawa' page (September-typhoon reference)
- Finding type
- historical_record
- Finding
- The official fleet-logistics history documents the storm that struck the Okinawa anchorages on this hull's loss date: 'Storms struck on 16 and 28 September and on 9 October at this appropriately named "typhoon crossroads"' (Buckner Bay, Okinawa); the 16 September storm damaged the Service Squadron Ten flagship Ocelot, which the 9 October storm then sank. This is the documented weather event coincident with SC-632's recorded sinking off Okinawa on 16 September 1945 - corroborated by the NHHC October-1945 typhoon page's reference to 'the earlier typhoon in September.'
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Study period
- 1945-09-16
- Population
- Fleet anchorage population, Okinawa (Sep-Oct 1945)
- Limitations
- Does not name SC-632 - it establishes that a damaging storm struck the Okinawa anchorages on 16 September 1945, the same date and place the official casualties list records this hull sunk; the attribution 'sunk in the 16 September typhoon' is an inference from coincident official records, and the storm's name 'Typhoon Ida' rests on secondary compilations only. The better-documented 9 October storm (Typhoon Louise, which sank sister SC-636) is a separate event - do not conflate.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-04
-
[5]NavSource Online: Submarine Chasers (SC) & (PC) index - class introduction and SC-497-class roster with ex-PC notations (verified live 2026-10-03) [other_primary]
- Locator
- navsource.net/archives/12/01idx.htm class introduction paragraphs and SC-497-class roster row 'SC-632 ex-PC-632'
- Finding type
- vessel_history
- Finding
- CORRECTION / designation-chain support: the class index explains the PC-632 -> SC-632 reclassification as class-wide, not hull-unique - 'World War II expansion programs led to construction of two large groups of subchasers, the new 110-foot wooden-hulled craft and the 173-foot steel-hulled type. By 1943, it was felt desirable to differentiate between the two types. The type symbol PC was retained for the steel 173-footers, and the separate symbol SC was adopted for the 110-foot vessels. These now dropped the dual "S.C.-PC" identification, and were simply identified as "USS SC-."' The steel PC-461-class numbering ran PC-461 to PC-496, PC-542 to PC-627, PC-776 to PC-826, and PC-1077 to PC-1265 - it does not include 632. The roster lists 'SC-632 ex-PC-632' alongside the same ex-PC pattern for every early class boat. This hull was therefore never a PC-461-class steel patrol craft: PC-632 was the shared-series number carried by this wooden 110' boat until the April 1943 re-symboling.
- Verification
- verified
- Role
- correction
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1943
- Limitations
- Corrects the batch-scope risk of reading 'PC-632' as a PC-461-class vessel - it is a designation-history fact, not a material claim. The 1943 re-symboling is stated at class level; this hull's specific commissioning designation (PC-632) and April 1943 reclassification rest on the vessel page (ev-02). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-05
-
[6]Shipbuilding History (Tim Colton), WWII sub-chaser production table + Mathis Yacht Building / John Trumpy & Sons yard table (shipbuildinghistory.com, verified live 2026-10-03) [other_primary]
- Locator
- shipbuildinghistory.com/shipyards/yachtsmall/trumpynj.htm row '259 | SC 632'; shipbuildinghistory.com/smallships/pc2.htm row 'SC | 632'
- Finding type
- vessel_history
- Finding
- The builder's-yard table records for this hull (Mathis yard hull no. 259): 'SC 632 | US Navy | Sub Chaser | 148d | 110 | 2-Sep-42 | Sunk off Okinawa 1945' - corroborating the build yard, the 2 September 1942 delivery/commissioning date, and the Okinawa loss. The companion WWII sub-chaser production table carries the identical row ('SC | 632 | Mathis Yachts | Camden NJ | 148 | 110 | 2-Sep-42 | Sunk off Okinawa 1945'). Sister Mathis hulls in the same block (SC-630, SC-631, SC-633, SC-634, SC-635 and the SC-1023+ series) document the yard's wartime subchaser program.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- Mathis/Trumpy yard workforce, Camden/Gloucester City NJ (1942)
- Limitations
- Shipbuildinghistory is a long-running secondary reference compilation, not an official registry. Its yard table files hull 259 under the 'Built in Gloucester City by John Trumpy & Sons' heading while DANFS and NavSource name 'Mathis Yacht Building Co., Camden' - a yard-identity transition nuance (the Mathis yacht operation moved Camden -> Gloucester City and became John Trumpy & Sons mid-war), not a different physical yard dispute; both names are carried in builder fields and gaps. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-06
-
[7]uboat.net Allied Warships, 'USS SC-632 (SC-632)' page (verified live 2026-10-03) [other_primary]
- Locator
- Ship page 8849, data table
- Finding type
- vessel_history
- Finding
- uboat.net records SC-632 as an SC-497-class submarine chaser built by Mathis Yacht Building Co. (Camden, NJ): ordered 30 July 1941, laid down 23 February 1942, launched 25 June 1942, commissioned 2 September 1942, lost 16 September 1945 - 'Sunk off Okinawa.' The order date (30 Jul 1941, pre-Pearl Harbor) is the only located order-date source and matches the order date uboat carries for sisters SC-630/SC-631.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Limitations
- Secondary compilation - milestone and loss data corroborate DANFS/NavSource; the 30 July 1941 order date rests on this source alone among those searched and is carried as secondary-only. 'Sunk off Okinawa' gives no position, cause, or casualty detail. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-07
-
[8]East Carolina University, J. Y. Joyner Library, Manuscript Collection #677-001, 'U.S. Navy Memorial Foundation Collection: Philip Stauderman Papers' finding aid (verified live 2026-10-03) [other_primary]
- Locator
- digital.lib.ecu.edu finding aid #677-001, 'Scope and arrangement' and 'Container list: Box 1 Folder a'
- Finding type
- historical_record
- Finding
- A ship-specific primary-source compilation exists for this hull: 'The History of World War II Submarine Chaser USS SC-632, 1942-1945,' compiled by Philip Stauderman, Lieut., USNR, dated 19 May 1994, donated 25 May 1994 (ECU Manuscript Collection #677-001, Box 1 Folder a). The finding aid's scope note records that the item 'provides details about the building materials, speed, and components of the ship,' includes 'a list of commanding officers, officers, enlisted, and their hometowns,' and includes 'the ships log' - the most complete ship-specific documentary source located for this hull, including a building-materials description directly relevant to material-content questions.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945 (item coverage); compiled 1994
- Population
- Stauderman (compiler, Lt. USNR); SC-632 officers and crew listed in the item
- Limitations
- Archival lead only: the item is not digitized - the finding aid (verified live) is the located record; the document itself requires on-site use or a reproduction request to Joyner Library. Its 'building materials' section may or may not address asbestos-containing materials; nothing is asserted here about its content beyond the finding aid's description. Contains no asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-08
-
[9]Splinterfleet.org (Theodore R. Treadwell's WWII subchaser site), 'Short Stories' page - SC-632 crew anecdote; SC-636 September-typhoon account (verified live 2026-10-03) [other_primary]
- Locator
- splinterfleet.org/short-stories - 'SC 632' Sloppy Joe's paragraph; 'SC 636' typhoon paragraph
- Finding type
- vessel_history
- Finding
- Veteran-anecdote record placing this hull at Key West during her U.S. service: 'Once when a few members of the crew of SC 632 were in Key West they stole a bar stool from the famous Sloppy Joe's saloon and brought it back for the captain to use in the pilot house' - consistent with Atlantic-side ASW training/operations before Pacific assignment. The same page carries a crew account of sister SC-636's experience 'in the typhoon that hit Okinawa in September 1945' - a first-person corroboration of the September storm's severity at the anchorage.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945 (undated anecdotes)
- Population
- SC-632 crew (Key West anecdote); SC-636 crew (September typhoon account)
- Limitations
- Crew anecdotes republished by the class historian's site - undated, unverified against service records, and the Key West visit cannot be assigned to a specific period (most plausible during shakedown/ASW-school work). The SC-636 anecdote attributes her loss to the September typhoon while DANFS/NavSource record SC-636 lost at sea 9 October (October typhoon) - a documented cross-source conflict, carried in gaps, not harmonized. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-09
-
[10]Era inference built on: NavSource spec block (GM 16-184A diesels, no steam plant); PCSA class documentation (110' wood hull; 438 delivered of 475 ordered); NavSource/NARA class framing (wooden 110' SC type); GAO HRD-80-2 Navy asbestos-era documentation (ev-11); Corn & Starr AJIM era scholarship (ev-12) [other_primary]
- Locator
- NavSource specifications block; ww2pcsa.org/subchaser.html class block; shipyards.json (no Mathis entry)
- Finding type
- asbestos_application
- Finding
- A wooden-hulled, diesel-powered 110' submarine chaser built in 1942 sits inside the Navy's documented asbestos-use era but at the low end of its material intensity: no boilers, no steam lines, no turbine lagging - the dominant shipboard asbestos pathways do not exist on this hull type. Era-standard diesel-craft applications aboard a boat of this type and period were engine and exhaust lagging, machinery gaskets, valve packing, electrical/wiring insulation, and clutch/brake friction materials in a small wooden hull volume.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Mathis yard construction trades (1942); crew (1942-45); salvage/hulk-destruction workforce (1946 or 1948)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for SC-632. Names era-standard applications, not confirmed installed materials; no quantity. The wooden-hull type plausibly carried materially less asbestos than steel steam vessels of the same era - an inference about degree, not an exemption claim. The Stauderman history's 'building materials' section (ev-08) is the open ship-specific lead. No manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-10
-
[11]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) - product-page highlights (verified live 2026-10-03) [gao]
- Locator
- GAO product page HRD-80-2 highlights block
- Finding type
- gov_survey
- Finding
- GAO's review of Navy asbestos-exposure protection documented that asbestos insulation was in use in Navy ships, and that the Navy's 1975 policy was to remove and replace with nonasbestos materials only insulation that was damaged or had to be removed for repairs - a policy modified in 1979 to selective replacement in high-maintenance areas. The program-level finding places asbestos insulation aboard Navy ships throughout this hull's construction era.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- 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. Content via product-page highlights - the full-report PDF was not retrieved this session. Fieldwork shipyards were Long Beach and Norfolk - not this hull's builder. Postdates the hull's 1945 sinking and 1946/48 hulk destruction.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-11
-
[12]Corn, Jacqueline Karnell, and Jennifer Starr, 'Historical perspective on asbestos: Policies and protective measures in World War II shipbuilding,' American Journal of Industrial Medicine 11(3):359-373 (1987) - DOI resolves to Wiley Online Library (HTTP 403 to automated fetch 2026-10-03; bibliographic record per sibling batch-8005 verification) [other_primary]
- Locator
- AJIM 11(3):359-373, doi.org resolution (403 to automated fetch)
- Finding type
- asbestos_application
- Finding
- Peer-reviewed historical study documents that asbestos was used extensively as a fireproofing and insulating material in U.S. shipbuilding during WWII - the era and program under which this wooden subchaser was mass-produced at a small yacht yard - and that wartime demand drove unprecedented asbestos utilization aboard U.S. hulls.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1940s era documented; article 1987
- Population
- WWII shipyard workers and ship crews (class context)
- Limitations
- Program/era-level scholarly documentation of asbestos use in WWII shipbuilding generally; does not name this vessel, class, or builder and does not establish that asbestos was aboard this hull, nor quantity, location, condition, individual exposure, or causation. Much of the documented shipyard exposure literature concerns larger combatant and merchant steam vessels, a materially different plant than this diesel subchaser. Full text access-blocked to automated fetch this session (Wiley 403) - cited at bibliographic level.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-12
-
[13]In Re: Asbestos Products Liability Litigation (No. VI), MDL-875 sub-docket, E.D. Pa. (filed 2020-10-19; 28 docket entries in the CourtListener RECAP index) - indexed docket text contains the string 'SC-632' [court_record]
- Locator
- CourtListener docket index, 'SC-632' type=r result set (8 hits, 2026-10-03); MDL-875 (No. VI) E.D. Pa. sub-docket filed 2020-10-19
- Finding type
- litigation_documented
- Finding
- An asbestos personal-injury docket in the federal MDL-875 master litigation (In Re: Asbestos Products Liability Litigation (No. VI), E.D. Pa.) contains the indexed string 'SC-632' in its CourtListener docket text. The MDL-875 litigation's plaintiffs' complaints and exposure lists routinely name vessels by hull designation; whether the string here names this hull as an alleged exposure site, appears in a general vessel list, or is an unrelated numeric string is not retrievable from the public index.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2020 (litigation)
- Population
- Unverified from index
- Limitations
- Pleading/docket-index-stage reference only - unadjudicated and unverified as to this hull. Does not establish exposure aboard this hull, asbestos presence, product identity, quantities, or legal eligibility. The sub-docket's specific docket number and filing text were not retrieved (per-row fetch not performed this session); the entry is one of eight hits in the 'SC-632' docket query, all others being name collisions (BNSF FELA cases, non-asbestos civil matters).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-13
-
[14]Batch-8007 search ledger (this record): DANFS SC-601-SC-700 compilation; NavSource SC-632 vessel page + 01idx/15idx class indexes; NHHC casualties list; NHHC BBBO + October-1945 typhoon page; uboat.net; shipbuildinghistory production + yard tables; splinterfleet.org; PCSA; HyperWar ships list; ECU finding aid; NVR check; Wikipedia/Wikiwand cross-check (secondary); CourtListener (API v4, 4 base queries run); secondary web sweep [other_primary]
- Locator
- search_ledger rows sl-uss-sc-632-sc632-01 through sl-uss-sc-632-sc632-19
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or museum record naming USS SC-632 / PC-632 was found in the public sources searched. CourtListener: all four base queries ran - 'SC-632' opinion returned 7 hits, all name collisions (Kentucky/Georgia/Missouri appellate docket-number and reporter strings, e.g., docket 2016-SC-000632-DG); 'SC-632' docket returned 8 hits, seven non-asbestos collisions (BNSF FELA matters, civil-rights, consumer, insurance, creative-expression cases) plus one asbestos MDL-875 sub-docket containing the 'SC-632' string - carried as an unverified archival lead (ev-13), not a qualifying finding; 'SC 632' opinion and docket variants returned the identical 7- and 8-hit sets. No qualifying asbestos litigation naming this hull was verified. The only 'asbestos' material in the secondary web sweep is law-firm marketing content - excluded by source policy, no primary anchor located.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a 110' wooden diesel boat simply has few asbestos-relevant systems and generated few paper records; no survey would be expected for a hull sunk in 1945. The Stauderman history's building-materials section (ev-08) is the open ship-specific lead; the MDL-875 docket reference (ev-13) is the open litigation lead - the underlying complaint text was not retrieved. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-632-sc632-14