Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]research packet 922-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: MISMATCH
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Evidence ID
- uss-sc-668-sc668-pkt-922-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, SC-668 (ex-PC-668) per-hull page - construction, milestones, specifications, commanding officer; corroborated by uboat.net Allied Warships ship 8885 and the navalmarinearchive.com Daytona Beach Boat Works yard table (secondary compilations) [other_primary]
- Locator
- NavSource 12/150668.htm header block, specification block, commanding-officer list; uboat.net/allies/warships/ship/8885.html; navalmarinearchive.com/sbh/shipyards/emergencysmall/daytona.html yard table
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 5 November 1941 by the Daytona Beach Boat Works, Inc., Daytona Beach, FL; launched 12 March 1942; commissioned PC-668, 4 July 1942; reclassified SC-668 in April 1943; visited Auckland, New Zealand twice between 7 August 1943 and 12 August 1944; struck from the Naval Register 28 March 1946; sold 21 November 1946; fate unknown. Call sign Nan-William-Uncle-Nan. Spec block: displacement 148 t.; length 110'10"; beam 17'; draft 6'6"; speed 15.6 kts; complement 28; armament one 40mm mount, two .50 cal. machine guns, two depth charge projector 'Y Guns,' and two depth charge tracks; propulsion two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Commanding officer listed: LTJG G. H. Sullivan, Jr., USNR (1945). NavSource states 'There is no DANFS history available for SC-668.' uboat.net corroborates all milestones and adds 'Ordered 18 Sep 1941' (unverified); the navalmarinearchive yard table independently lists 'SC 668, US Navy, Sub Chaser, 136 LDT, 110 ft, delivered 4-Jul-42, Sold 1946.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- Daytona Beach Boat Works construction trades (1941-42); crew (1942-46)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates generally track official records but no ship-specific primary source exists (no DANFS entry). uboat.net and navalmarinearchive are specialist secondary compilations. The Auckland visits and the 1945 CO line are unsourced on the page. The 1946 buyer is unidentified; 'fate unknown' is NavSource's own note. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-668-01
-
[3]Mystic Seaport Museum, G.W. Blunt White Library, Isaac Henry Strauss Collection (Manuscripts Collection 348, accession MC 2004.81) - finding aid plus companion photograph series (accession 2004.81) in the general collection [museum_official]
- Locator
- research.mysticseaport.org/coll/coll348 (finding aid: biography; Box 1 Folder 5 'Copies of Logs, SC-668'); mobius.mysticseaport.org 'Submarine chasers' subject listing and object records 2004.81.49-.204
- Finding type
- historical_record
- Finding
- An official museum archive holds a named per-hull collection for this boat. The finding-aid biography states that after surviving the February 1942 USS Pollux wreck, Strauss 'went on to become an ensign and later commanded SC 668, a sub chaser.' The box list includes 'Copies of Logs, SC-668; 1944 Feb 1-1944 Mar 31 (2 items)' and two copies of the servicemen's magazine 'The Chaser' (10 Nov 1944). The companion 2004.81 photograph series (~20 objects) documents: 'Port view of PC 668 underway with shoreline behind, 1942' (2004.81.49); SC 668 at anchor with crew on deck, Guadalcanal, 1943 (2004.81.50/.53/.71, one stamped 'BS 107365'); five officers at the bridge, Tulaghi (2004.81.66); SC 668 tied up to USS OCEANOGRAPHER at Malaita with survey work (2004.81.65/.68); SC 668 underway with convoy (2004.81.128/.129); a 40mm antiaircraft gun on the aft deck and a 20mm gun (2004.81.114/.131); named officers and crew in captions (Captain Frank Osman; Executive Officer and later commanding officer Henry Strauss; Lt. Quant, 'my Exec. and who eventually relieved me in command' per Strauss's Sound Archives transcript; Lt. William Manning; officer Carr; Gunner's Mate 1/c Parks); 'Henry Strauss painting Japanese flag on flying bridge' (2004.81.109); and a ship's mascot (Nov 1943).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1944 (photograph/log coverage); 1941-2004 (collection span)
- Population
- SC-668 officers and crew 1942-44 (Osman, Strauss, Quant, Manning, Carr, Parks named in captions)
- Limitations
- Archival lead only: photographs and two months of log copies are physical holdings not individually examined; caption metadata is donor-derived. Photographs establish presence (Guadalcanal, Tulaghi, Malaita, convoy escort, survey duty) and the PC designation in active use, not work or material records. No asbestos content. The 'Japanese flag' caption implies a claimed kill marking - no corroborating action report located, and the claim is not asserted in this record. Officer names/roles are caption-level, not a documented command roster.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-668-02
-
[4]Designation cross-check: NavSource SC-668 page ('ex-PC-668'; 'Commissioned PC-668, 4 July 1942'; 'Reclassified SC-668 in April 1943'); NavSource SC archive index (SC-628 through SC-669 all cataloged as SC hulls; SC-542 to SC-627 marked 'Hull numbers not used - See PC Index'); Mystic Seaport photo 2004.81.49 captioned 'Port view of PC 668 underway... 1942' [other_primary]
- Locator
- NavSource 12/150668.htm designation line; NavSource 12/15idx.htm index block (SC-628-669); mobius.mysticseaport.org object 2004.81.49
- Finding type
- historical_record
- Finding
- CORRECTION of a circulating identity error: this hull was never a PC-461-class 173-foot steel patrol craft. The SC-497-class boats in the 628-669 block were ordered inside the wartime patrol-craft program and carried PC numbers at commissioning; the Navy reclassified them SC in April 1943. NavSource's own SC archive lists SC-628 through SC-669 as submarine-chaser hulls, and its per-hull page records this boat commissioning as PC-668 on 4 July 1942 before the April 1943 reclassification. A captioned 1942 museum photograph shows her underway literally marked as 'PC 668.' Any source describing 'PC-668' as a steel PC-461 patrol craft propagates a numbering-block error: the hull was a 110-foot wooden SC-497-class subchaser throughout.
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1943
- Limitations
- Corrects a designation/identity error, not a material claim. The April 1943 reclassification date is NavSource's; the order-inside-the-PC-program mechanism is class-level secondary literature. Partial verification: the commissioning designation rests on NavSource plus one captioned museum photograph, not a commissioning document located directly.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-668-03
-
[5]Naval Historical Center (NHHC), Online Library of Selected Images, 'USS SC-669, 1942-1947' (verbatim HyperWar transcription of the NHC ship page; NHHC carries no SC-668 page) [nhhc_danfs]
- Locator
- ibiblio HyperWar usnsh-s/sc669.htm (NHC Online Library ship page, 'Page made 28 January 2001'); NHHC photo NH 96482 caption
- Finding type
- historical_record
- Finding
- NHHC documentation for the adjacent same-yard hull: USS SC-669, 'a 95-ton 110-foot submarine chaser,' was built at Daytona Beach, Florida; commissioned July 1942; initially based at Charleston, South Carolina; reassigned to the Gulf Sea Frontier September 1942; then sent to the Pacific for employment in the South Pacific with her home yard at Pearl Harbor, arriving Tutuila, Samoa, in late January 1943; assigned to the 12th Naval District October 1945; decommissioned November 1945; sold March 1947. NHHC photo NH 96482 shows SC-669 with SC-508 at the Charleston Navy Yard, 10 August 1942. This corroborates the block-level build/service pattern for the Daytona Beach SCs (SC-668's immediate sister from the same yard, same design, same Pacific assignment pattern).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1947
- Population
- SC-669 crew (sister-hull context)
- Limitations
- Documents a different hull (SC-669), not SC-668 - class/block corroboration only; it does not establish that SC-668 shared any particular assignment or milestone. Verbatim transcription of an official NHC page (the live history.navy.mil equivalent could not be located). The '95-ton' figure conflicts with NavSource's 148 t and PCSA's 98 t - carried in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-668-04
-
[6]Era inference built on: NavSource SC-668 spec block (two GM 8-268A diesels; wooden SC-497 class); Patrol Craft Sailors Association class specification page (110-ft wood-hull subchaser, diesel plant); NavSource SC index class summary; GAO HRD-80-2 (see ev-uss-sc-668-06) [other_primary]
- Locator
- NavSource 12/150668.htm spec block; ww2pcsa.org/subchaser.html class spec table; NavSource 12/15idx.htm class paragraph
- Finding type
- asbestos_application
- Finding
- A wooden-hulled, diesel-powered 110-foot submarine chaser built 1941-42 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a small diesel combatant of this type and period were engine and exhaust lagging, machinery gaskets, valve packing, and electrical insulation in the confined machinery space, with possible brake linings on deck winches. As a wooden diesel craft she carried no steam plant - the boiler/turbine lagging pathway of steam-driven combatants does not apply, and this type's asbestos footprint is categorically smaller than a steam vessel's.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- Daytona Beach construction trades (1941-42); crew (1942-46); any post-sale civilian owners (1946-forward, unrecorded)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or construction specification located for SC-668. Names era-standard applications, not confirmed installed materials. Wooden patrol craft plausibly carried little asbestos relative to steam vessels, but no source quantifies the type's material content; this row does not establish presence, absence, or quantity aboard this hull. Product names are normalized era terms; no manufacturer attribution.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-668-05
-
[7]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 construction (1941-42) and service era (1942-46).
- 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. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403, confirmed 2026-10-03) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-668-06
-
[8]Batch-8042 search ledger (this record): NavSource per-hull page and class index; Mystic Seaport finding aid and object records; NHHC Online Library (sister SC-669 only); Naval Vessel Register; NARA catalog; CourtListener opinion query (13 name collisions; three further base queries pacing-blocked); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-sc-668-01 through sl-uss-sc-668-14
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or qualifying litigation naming SC-668 or PC-668 was found in the public sources searched (see search_ledger). No DANFS entry exists for this hull. CourtListener 'SC-668' opinion search returned 13 hits, all name collisions (Kentucky/Alabama docket-number matches and reporter-citation matches); the remaining three base queries ('SC-668' docket, 'PC-668' opinion, 'PC-668' docket) could not be completed this session - the fleet pacing budget was repeatedly spent - and are logged as blocked, not negative results. Secondary web sweeps surfaced no qualifying asbestos litigation and no law-firm listicle naming this hull - only unrelated name collisions (a Zimbabwe Supreme Court case number, a Sennheiser headset model).
- 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; and three of four CourtListener base queries are a genuine open gap (pacing-blocked, not run). Mystic's two months of log copies, NARA RG 24 deck logs, BuShips correspondence, and 1946 sale/disposal records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-668-07