Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
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[1]research packet 921-packet.md (4 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: MISMATCH — real identity: USS **SC-664** — wooden submarine chaser (existed as an SC-series hull; see corroboration below).
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Evidence ID
- uss-sc-664-sc664-pkt-921-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, SC-664 (ex-PC-664) - construction milestones, designation history, disposal, specifications, CO table, call sign [other_primary]
- Locator
- NavSource 12/150664.htm header block, specifications block, CO table, 'Courtesy Joe Radigan' note
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 19 November 1941 by Dachel-Carter Shipbuilding Corp., Benton Harbor, MI; launched 21 May 1942; commissioned PC-664 on 23 August 1942; reclassified SC-664 in April 1943; stricken from the Naval Register 26 February 1946; transferred to the State Department Foreign Liquidation Commission in December 1946 (NavSource notes the Naval Vessel Register of 1 January 1949 lists the FLC transfer as January 1947); fate unknown. Call sign Nan-William-Tare-William. Spec block: displacement 148 t.; length 110'10"; beam 17'; draft 6'6"; speed 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. CO table lists one officer: LT Chester J. Reed, USNR, September 1944. NavSource states explicitly: 'There is no DANFS history available for SC-664.' No photograph of the hull is held in the archive.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1947
- Population
- Dachel-Carter construction trades (1941-42); wartime crew (~28)
- Limitations
- Ship-specific milestones and specs only - no asbestos or material content. NavSource is a volunteer secondary compilation tracking official registers; milestone dates generally match Navy records but 'commissioned PC-664' reflects the paper designation, not a PC-461-class vessel (see ev-04). No image exists for this hull, so no photographic corroboration of fit.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-01
-
[3]uboat.net Allied Warships of WWII, USS SC-664 (SC-664) warship page + casualty record for motor tanker Panam (uboat.net/allies/merchants/2911.html) [other_primary]
- Locator
- uboat.net/allies/warships/ship/8881.html 'Notable events' block; uboat.net/allies/merchants/2911.html casualty record
- Finding type
- historical_record
- Finding
- The one located operational event for this hull: on 4 May 1943 USS SC-664 picked up 49 survivors from the Panamanian motor tanker Panam (7,277 tons, completed 1925 by Livingstone & Cooper Ltd, Hessle; owner Marine Transport Lines Inc., New York) after U-129 (Kplt. Hans-Ludwig Witt) torpedoed and sank her off the North Carolina coast in position 34°11'N, 76°12'W. Panam was a straggler from convoy NK-538 on the Norfolk to Lake Charles, Louisiana route; of her complement of 51, two were killed and 49 survived - matching the 49 rescued by SC-664. Warship page corroborates construction data: Dachel-Carter Shipbuilding Corp., Benton Harbor; ordered 18 Sep 1941; laid down 19 Nov 1941; launched 21 May 1942; commissioned 23 Aug 1942.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-05-04
- Population
- SC-664 crew at rescue (~28); 49 embarked survivors, May 1943
- Limitations
- uboat.net is a specialist secondary compilation (Gudmundur Helgason), not a primary registry; the event record is consistent with internal casualty data (2 dead + 49 survivors = complement 51) but no primary war-diary or action-report corroboration was located. The warship-page event text spells the tanker 'Penam' while the linked casualty page titles her 'Panam' - spelling variant noted, casualty page carried. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-02
-
[4]ShipScribe, 'U.S. Navy Building Programs During World War II: FY 1939-41' - transcription of official Navy building-program tables (FY1941, 400 Small Craft: 5th Group, Program 20) [other_primary]
- Locator
- fy3941.html, '400 Small Craft: 5th Group' table - row: hulls 664-65, award 18 Sep 41, builder Dachel-Carter; preceding block header '50 PC | 578-82 | (173 ft)' for contrast
- Finding type
- vessel_history
- Finding
- The FY1941 building-program table classifies contract hulls 628-675 as type 'SC' of the '(110-foot)' class under Program 20 - hulls 664-65 were awarded to Dachel-Carter on 18 September 1941. This corroborates that the 628-675 number block was contracted as 110-ft wooden submarine-chaser craft, not PC-461-class 173-ft steel patrol craft; the 'PC' prefix carried by these hulls at commissioning was a designation artifact corrected in the April 1943 reclassification.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941
- Population
- Dachel-Carter construction trades (1941-42)
- Limitations
- ShipScribe reproduces official Navy building-program tables but is a private transcription site - the underlying program document was not independently inspected. The table confirms contract type and award date only; it does not document the commissioning designation (PC-664), service history, or any material content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-03
-
[5]Designation cross-check: NavSource SC-664 hull page ('ex-PC-664'; commissioned PC-664 23 Aug 1942; reclassified SC-664 April 1943); ShipScribe FY41 program table (664-65 classified SC 110-ft at award); HyperWar 'Ships of the U.S. Navy, 1940-1945' PC/SC lists (ibiblio.org); NavSource sister-hull pages SC-497 (12/150497.htm) and SC-646 (12/150646.htm) [other_primary]
- Locator
- NavSource 12/150664.htm designation lines; shipscribe fy3941 '48 SC | 628-29 ... 664-65' rows; ibiblio.org/hyperwar/USN/ships/ships-sc.html PC-461 table (no PC-628-669) and SC table ('SC-664-665 | 1942-44'); NavSource 12/150497.htm and 12/150646.htm designation lines
- Finding type
- historical_record
- Finding
- CORRECTION: this hull was never a PC-461-class patrol vessel. 'PC-664' existed only as the commissioning designation (23 Aug 1942 - Apr 1943) on a 110-ft wooden SC hull - the FY41 building program contracted hulls 628-675 as SC (110-ft) type, and the HyperWar PC-461-class ship list contains no PC-628 through PC-669 entries (the 173-ft steel PC list runs to the PC-625/627 area then resumes at PC-776). Sister hulls show the identical sequence: SC-497 commissioned as PC-497 (15 Apr 1942) and SC-646 as PC-646 (1 Jul 1942), both reclassified to SC in April 1943. Any reference work listing 'PC-664' as a patrol craft is propagating the pre-reclassification designation; the correct identity is USS SC-664, SC-497-class submarine chaser.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1943 (designation window)
- Limitations
- Corrects a designation ambiguity, not a material claim. The April 1943 reclassification month rests on NavSource hull pages (consistent across this number block); navypedia carries a 'PC664, 9.1942- SC664' notation suggesting a September 1942 change - unresolved variant logged in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-04
-
[6]shipbuildinghistory.com (Tim Colton yard histories), Dachel-Carter Shipbuilding, Benton Harbor MI - yard history and build table [other_primary]
- Locator
- dachelcarter.htm yard history paragraph and build table row for SC 664
- Finding type
- vessel_history
- Finding
- Builder context and hull line-item: Dachel-Carter was founded in 1915 by Peter Dachel and A. B. Carter (former Truscott Boatbuilding employees), struggled through the 1930s, was recapitalized and grew to over 600 employees during WWII, and folded after the war; the yard stood at the west end of West Main Street on the Benton Harbor Ship Canal (later a Whirlpool machining plant). The yard's output table lists: 'SC 664 | US Navy | Sub Chaser | 136d | 110 | 25-Aug-42 | To FLC 1946' - i.e., delivery recorded 25 August 1942 and Foreign Liquidation Commission transfer in 1946, consistent with NavSource (commissioned 23 Aug 1942; FLC Dec 1946).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- Dachel-Carter construction workforce (600+ wartime employees, yard-level)
- Limitations
- Yard-history secondary compilation, not a primary registry; '25-Aug-42' is the build-table delivery/delivery-completion date vs NavSource's 23 Aug 1942 commissioning - variant carried in gaps. No asbestos, material, or workforce-exposure content; the yard folded postwar and no OSHA/NIOSH or abatement record for it was located.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-05
-
[7]HyperWar/ibiblio, 'Ships of the U.S. Navy, 1940-1945 - Submarine Chasers' fleet table (PC-461-class PC list and SC list) [other_primary]
- Locator
- ships-sc.html SC table row 'SC-664-665'; PC-461-class table (numbering runs PC-461 through the PC-625/627 area, then resumes at PC-776)
- Finding type
- vessel_history
- Finding
- Fleet-list corroboration: the SC table lists 'SC-664-665 | 1942-44' with no Lend-Lease notation - consistent with NavSource's record that the hull remained in US Navy service and was disposed to the Foreign Liquidation Commission rather than transferred to an ally under Lend-Lease. The same page's PC-461-class list contains no PC-628 through PC-669 entries, corroborating that this number block was SC-type.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1944
- Limitations
- Compiled reference table (HyperWar presentation of the NavSource-derived fleet list), not a primary registry; absence of a lend-lease flag is corroborative but not dispositive - the FLC disposal destination is the controlling record. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-06
-
[8]Era inference built on: NavSource hull spec block (wooden 110-ft SC-497-class chaser; twin GM 16-184A diesels, no steam plant); ww2pcsa.org Patrol Craft Sailors Association class specs (110-ft wood-hull subchaser; complement 3 officers + 25 enlisted); GAO HRD-80-2 Navy-response enclosure (see ev-08) [other_primary]
- Locator
- NavSource 12/150664.htm spec block; ww2pcsa.org/subchaser.html class spec table; GAO HRD-80-2 Navy-response enclosure (application list)
- Finding type
- asbestos_application
- Finding
- A wooden-hulled 110-ft diesel submarine chaser built 1941-42 sits inside the Navy's documented asbestos-use era, but with a materially smaller exposure surface than a steel steam vessel. Era-standard applications plausible aboard a craft of this type: piping-system gaskets and packing (GAO: 'Piping system gaskets and packing ... in Navy shipboard piping systems contain asbestos'), diesel exhaust lagging, electrical insulation and resistor bodies (GAO: asbestos in 'electric cables' and 'Navy electronic equipment'), deck coverings/tile (GAO: asbestos 'on Navy ship decks'), and brake/clutch linings on deck machinery (GAO: 'Navy ship equipment brakes and clutches'). Diesel plant - no boilers or turbines, so the boiler/turbine thermal-lagging pathway does not apply; the major Navy asbestos application (thermal insulation for machinery, equipment and piping) is reduced to engine/exhaust lagging scale on this type.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- Dachel-Carter construction trades (1941-42); wartime crew (~28); any post-war FLC custodial/transfer personnel
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or builder record located for SC-664. Names era-standard applications documented Navy-wide in 1979, not confirmed installed materials on this 1942 hull; a wooden chaser carried far less insulation than the surface combatants the GAO report surveyed. No quantity; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-07
-
[9]GAO, 'Navy Efforts To Protect Workers From Asbestos Exposure,' HRD-80-2 (published Oct 18, 1979; released Oct 22, 1979), incl. Navy-response enclosure; full report PDF at gao.gov/assets/hrd-80-2.pdf (full text extracted via Firecrawl this session; direct fetch returned HTTP 403) [gao]
- Locator
- HRD-80-2 product page (published/released dates) and full-report PDF: 'NAVY'S POLICY ON USE OF ASBESTOS' section and Navy-response enclosure (application list, 1973 spec change, May 1978 deliveries)
- Finding type
- gov_survey
- Finding
- Government documentation spanning this hull's build-and-service era: the Navy's response enclosed in the report states 'Each ship has several types of asbestos containing materials installed; however, thermal insulation for machinery, equipment and piping systems has been the major application of asbestos,' and lists shipboard asbestos in piping-system gaskets and packing, ship decks, electric cabling (galley ranges), electronic-equipment resistor bodies, and equipment brakes and clutches - 'nearly impossible to build a Navy ship free of the mineral.' Specifications for thermal insulation were changed in 1973 to asbestos-free materials, yet ships were still delivered with asbestos insulation as late as May 1978. Fieldwork shipyards were Long Beach and Norfolk Naval Shipyards.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (report); exposure/policy era spans this hull's 1941-46 build and service
- Population
- Navy shipyard workers (Long Beach, Norfolk NSY fieldwork); Navy asbestos program review
- Limitations
- Program-level documentation - supports era context only; SC-664 is not named, and the surveyed yards (Long Beach, Norfolk NSY) are not this hull's builder. Asbestos applications listed are fleet-wide typicals; whether they were installed on this specific wooden chaser is unestablished. Direct fetch of gao.gov returned HTTP 403 to this network; content extracted via Firecrawl of the product page and the full-report PDF (gao.gov/assets/hrd-80-2.pdf).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-08
-
[10]Batch-8038 search ledger (this record): NavSource hull page; ShipScribe FY41 building-program table; shipbuildinghistory.com Dachel-Carter yard record; uboat.net warship + casualty pages; HyperWar/ibiblio ships list; ww2pcsa.org class page; NHHC/DANFS; NVR; GAO HRD-80-2 full text; secondary web litigation/marketing sweep; NARA deck-log and Fold3 war-diary leads; CourtListener (see ledger rows) [other_primary]
- Locator
- search_ledger rows sl-uss-sc-664-sc664-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or litigation naming USS SC-664 / PC-664 was found in the public sources searched. CourtListener: the exact-name opinion query returned count=0 - no opinion text names 'USS SC-664'; the docket and hull-number base queries were fleet-throttled and are logged as blocked (open gap), not negative results. The secondary-web sweep surfaced ZERO asbestos or mesothelioma content naming this hull - even the usual law-firm listicles that claim asbestos aboard every Navy vessel do not carry this hull (hits for 'SC-664' are unrelated electrical-enclosure model numbers). There is no DANFS entry, no NavSource photograph, and no NVR entry (hull disposed before the register's coverage window).
- 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 - era-standard gaskets, packing, and electrical applications documented Navy-wide in 1979 plausibly applied to a 1942 hull, but no ship-specific material record exists. CourtListener coverage is partial: opinion search negative, docket/RECAP side unsearched - a case could exist in dockets without surfacing in opinions. Deck logs, FLC disposal file, and any builder work records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-09
-
[11]NARA leads: RG 24 deck logs for PC-664/SC-664 (Aug 1942 - Feb 1946) and RG 38 WWII war diaries (Fold3 digitization); NARA catalog (catalog.archives.gov) is JS-rendered and unfetchable from this session; no digitized deck log or war diary for this hull located online [other_primary]
- Locator
- catalog.archives.gov (JS-rendered, unfetchable); Fold3 WWII war-diary collection; RG 24 deck-log series at NARA II
- Finding type
- historical_record
- Finding
- Open archival leads: (1) RG 24 deck logs for this hull should exist at NARA College Park covering Aug 1942 - Feb 1946 - they would document operating areas, yard availabilities, and the 4 May 1943 Panam rescue from the ship's own record; (2) WWII war diaries (RG 38) for the hull, digitized selectively on Fold3 - sister hull SC-654's diary is not on Fold3, so this hull's may likewise be absent; (3) FLC disposal file documenting buyer, flag, and post-1946 fate; (4) Dachel-Carter contract/work records, if any survive (yard folded postwar). None located in digitized public sources.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1947
- Population
- Crew 1942-46 (deck logs); FLC custodial personnel 1946-47
- Limitations
- Archival lead only - nothing retrieved. NARA catalog is JS-rendered and could not be searched programmatically this session; Fold3 is subscription-walled. These are leads, not findings - they may or may not contain material content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-664-sc664-10