Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
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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-667-sc667-pkt-922-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, SCC-667 ex-SC-667 ex-PC-667 - per-hull construction, designation timeline, specifications, disposal (verified live) [other_primary]
- Locator
- NavSource 12/150667.htm header designation line, chronology block, specifications block, commanding-officers table
- Finding type
- vessel_history
- Finding
- NavSource per-hull record for this hull: laid down 16 October 1941 by the Weaver Shipyards, Orange, TX; launched 4 April 1942; commissioned PC-667, 22 September 1942; reclassified SC-667 in April 1943; reclassified a Control Submarine Chaser, SCC-667, 20 August 1945; struck from the Naval Register 19 December 1945; transferred to the Maritime Commission 5 March 1948; fate unknown. Specifications: 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 'Y-gun' depth-charge projectors, two depth-charge tracks; propulsion two 880 bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Call sign Nan-William-Uncle-Jig. Commanding officer listed: LTJG H. W. Griggs, USNR (1945). One photograph dated 19 September 1942 (as PC-667, three days before commissioning). Page states: 'There is no DANFS history available for SC-667.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Weaver Shipyards construction trades (1941-42); commissioned crew, complement ~28 (1942-45)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates generally track the Naval Register but no underlying primary document is displayed for most entries. Contains no asbestos or material content. Decommissioning date is not separately given; 'fate unknown' is the documented final status.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-01
-
[3]U.S. Marine Corps monograph, 'The Recapture of Guam' (O. R. Lodge, Historical Division, HQMC, 1954), Appendix V: United States Ships Participating in the Guam Operation - 'SC-667' listed under Patrol Vessels (HyperWar/ibiblio transcription, verified live) [other_primary]
- Locator
- Appendix V, 'PATROL VESSELS' table, right column (SC-504, SC-521, SC-667, SC-724, ...)
- Finding type
- vessel_history
- Finding
- An official U.S. Marine Corps historical monograph lists SC-667 among 'United States Ships Participating in the Guam Operation' (Appendix V, Patrol Vessels section). The Guam operation ran July-August 1944 (landings 21 July 1944). This is a government-published participant listing naming this hull - the strongest ship-specific service record located.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-07 to 1944-08
- Population
- SC-667 crew during the Guam operation (~28), Jul-Aug 1944
- Limitations
- Participant listing only - the appendix names the hull but does not describe SC-667's specific role, dates of presence, or actions at Guam. As a 110-ft SC she would have served in patrol/control/screening capacity, but no such detail is stated for this hull in this source. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-02
-
[4]Patrol Craft Sailors Association, 'Information on WWII SCs' page - SC casualty/incident list entry 'SC 667 | Grounded in Okinawa | 04-10-45'; class statistics block (verified live) [other_primary]
- Locator
- ww2pcsa.org/subchaser.html, SC incident table ('SC 667 | Grounded in Okinawa | 04-10-45') and class characteristics block
- Finding type
- vessel_history
- Finding
- The Patrol Craft Sailors Association's compiled SC incident/casualty list records: 'SC 667 - Grounded in Okinawa - 04-10-45.' The entry falls during the Okinawa campaign (initial landings 1 April 1945), consistent with SC-667's documented Pacific service (Guam, Jul-Aug 1944) and her later conversion to control submarine chaser (SCC-667, 20 Aug 1945). Class data on the same page: 110'10" wood hull, 98 tons, two GM diesels, 19 kts, complement 3 officers + 25 enlisted; program totals 475 ordered, 37 cancelled, 438 delivered.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-04-10
- Population
- SC-667 crew (~28), Okinawa, April 1945
- Limitations
- Veterans-association compiled listing, not an official record - uncorroborated for this hull by any located primary source; date and 'grounded' characterization rest on the PCSA compilation alone (verification partial). Whether the grounding caused damage, casualties, salvage, or contributed to her December 1945 striking is undocumented. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-03
-
[5]Shipbuilding History (Colton), Weaver Shipyards, Orange TX - yard construction list: 'SC 667 | US Navy | Sub Chaser | 136 GT | 22-Sep-42 | Later PCC 667, to the NDRF 1948' (verified live) [other_primary]
- Locator
- shipbuildinghistory.com/shipyards/small/weaver.htm, Weaver hull table row 'SC 667'
- Finding type
- historical_record
- Finding
- The Weaver Shipyards construction list records SC 667 as a 136-GT sub chaser built for the US Navy and delivered 22 September 1942 (the commissioning date), with disposition 'Later PCC 667, to the NDRF 1948' - corroborating the builder, delivery date, and 1948 Maritime Commission/NDRF disposition in the NavSource record. Weaver was one of two SC-497-class hulls built at the yard (the other, SC-666, went to Free France as CH-134).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Weaver Shipyards construction workforce, Orange TX (1941-42)
- Limitations
- Secondary construction-list compilation. Designation shown as 'PCC 667' conflicts with NavSource's 'SCC-667' (control submarine chaser) - flagged in gaps; NavSource carried. 'Delivery' date coincides with the commissioning date. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-04
-
[6]'Ships of the U.S. Navy, 1940-1945' - Submarine Chasers section, SC-497 class table: 'SC-667-672 | (no name) | comm. 1942-44' + SC-497 class specification block (HyperWar/ibiblio transcription of official-compilation data, verified live) [other_primary]
- Locator
- ships-sc.html, 'SC-497 Class' specification block and hull table, row 'SC-667-672'
- Finding type
- historical_record
- Finding
- The Navy's 1940-45 ship list carries SC-667 only at range level - 'SC-667-672' commissioned 1942-44 with no name and no individual notes (no loss, transfer, or conversion annotation). Class specification block: SC-497 class, displacement 98 tons, length 110'10", beam 17', draft 6'6", speed 20 knots, armament 1x3"/50 + 2x2 .50-cal, complement 2 officers + 20 enlisted, diesel engines twin screws 1,200 shp.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1944
- Population
- class context
- Limitations
- Range-level confirmation only - establishes that SC-667 was a commissioned U.S. hull of the SC-497 class; no per-hull detail. Class spec block differs from the NavSource per-hull block (98 t/20 kts/22 crew vs 148 t/15.6 kts/28) - spec conflicts flagged in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-05
-
[7]Era inference built on: NavSource + HyperWar USN ships-list specification blocks (wooden hull, twin GM diesels, no steam plant); GAO HRD-80-2 program-level documentation of Navy asbestos use through the era (ev-07); PCSA class characteristics [other_primary]
- Locator
- NavSource 12/150667.htm spec block (propulsion); ships-sc.html class spec block; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A wooden-hulled 110-ft diesel submarine chaser of the 1941-42 emergency program has a materially smaller asbestos footprint than a steel steam vessel - no boilers, turbines, or steam lines - but sits inside the documented Navy asbestos era. Era-standard small-craft applications consistent with the type were diesel-exhaust and muffler lagging, machinery and piping insulation in the engine compartment, gaskets, valve packing, and electrical insulation, all within the crew's confined living/working volume.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Weaver Shipyards construction trades (1941-42); crew (~28, 1942-45); disposal/NDRF handling trades (1948)
- Limitations
- Class/era inference only - no hull-specific insulation list, builder's material schedule, survey, or work package located for this hull. The product set named is generic to wartime diesel small craft; no manufacturer attribution, no quantity, no confirmation of installation aboard this hull, and no evidence any such material survived into the postwar period or the 1948 disposal.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-06
-
[8]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 (1942-45).
- 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 or its class. Full text not retrieved (gao.gov returns HTTP 403 to automated fetch, confirmed 2026-10-03 - standing defect since Batch 01) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-07
-
[9]U.S. EPA Superfund/CERCLA site profile, 'WEAVER SHIPYARD' (EPA ID TXD988083853), 1601 S. Childers, Orange, TX - NFRAP status (verified live) [other_primary]
- Locator
- EPA CERCLA site profile TXD988083853 (Site Information tab)
- Finding type
- environmental_record
- Finding
- The builder's yard at Orange, TX was assessed under CERCLA and archived as NFRAP ('site does not qualify for the NPL based on existing information') - an official environmental record confirming the Weaver Shipyard site was evaluated and closed without federal remedial listing. The public summary carries no asbestos-specific contaminant data.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Study period
- CERCLA assessment era (post-1980)
- Population
- Weaver Shipyard site (context)
- Limitations
- Yard-site environmental record only - postdates the hull's 1941-42 construction by decades and says nothing about wartime materials, hull content, or worker exposure. Contaminant detail not available in the public summary page. Does not establish or defeat any asbestos claim for this hull or this yard.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-08
-
[10]Designation cross-check: NavSource per-hull chronology ('Commissioned PC-667 22 Sep 1942; reclassified SC-667 April 1943'); NavSource SC index (SC-628-669 block carried as commissioned SC hulls after April-1943 reclassification); uboat.net warship record; navypedia SC-497 list ('SC667, 8.1945- SCC667 ... to Maritime Comm. 3.1948'); shipbuildinghistory Weaver table ('Later PCC 667') [other_primary]
- Locator
- NavSource 12/150667.htm chronology; NavSource 12/15idx.htm SC index; uboat.net ship/8884; navypedia us_sc_sc.htm; shipbuildinghistory Weaver table
- Finding type
- historical_record
- Finding
- CORRECTION/clarification of designation: this hull was commissioned under the PC-667 designation on 22 September 1942 and reclassified SC-667 in April 1943 - it was never a PC-461-class steel patrol craft. The PC-461 class numbering skips the 628-669 block because those numbers were assigned to SC-497-class wooden sub chasers then under construction; several were briefly commissioned as PCs before the April 1943 mass reclassification (pattern documented for sisters, e.g., PC-497 -> SC-497, PC-666 -> SC-666). In August 1945 she was again reclassified, to control submarine chaser SCC-667. Secondary sources disagree on the control designation styling - shipbuildinghistory's Weaver table prints 'PCC 667'; NavSource and navypedia carry 'SCC-667' (SCC carried).
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Limitations
- Resolves a scope/numbering ambiguity only; no asbestos or material content. The 'PCC 667' variant is probably a slip or alternate notation for the control-chaser designation but is unresolved against a primary register entry.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-09
-
[11]Batch-8041 search ledger (this record): NavSource per-hull page; USMC Guam monograph appendix; PCSA subchaser page; shipbuildinghistory Weaver + subchaser tables; HyperWar USN ships list; uboat.net; navypedia; EPA CERCLA profile; NHHC DANFS/site search; Naval Vessel Register; NARA catalog; GAO product page; CourtListener; secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-sc-667-sc667-01 through -16
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed case naming SC-667/SCC-667/PC-667 was found in the public sources searched (see search_ledger). No DANFS history exists for this hull. CourtListener returned 15 opinion and 18 docket hits for 'SC-667' and 198 docket hits for 'PC-667' - all classified name collisions (state-court docket numbers, reporter citations, and prisoner-civil 'PC' docket prefixes), none referencing the vessel or asbestos; only the 'PC-667' opinion query remained unrun (fleet pacing). Secondary web sweeps surfaced only name collisions (an Indiana appellate docket number '21A-SC-667', an Indian Supreme Court reporter cite 'AIR 1967 SC 667', a South Carolina highway designation) and no asbestos litigation naming the vessel.
- 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 - wartime small-craft material schedules were never systematically published, and the hull's fate after the 1948 Maritime Commission transfer is unknown. One CourtListener base query ('PC-667' opinion) remains unrun, blocked by fleet pacing. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-667-sc667-10