Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
-
[1]research packet 922-packet.md (4 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: MISMATCH
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Evidence ID
- uss-sc-665-sc665-pkt-922-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, SC-665 (ex-PC-665) - milestone timeline, specifications, disposition [other_primary]
- Locator
- NavSource 12/150665.htm milestone list and specifications block
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 25 November 1941 by the Dachel-Carter Shipbuilding Corp., Benton Harbor, MI; launched 12 May 1942; commissioned USS PC-665, 10 August 1942; reclassified SC-665 in April 1943; scheduled for transfer to the Coast Guard in 1945 as USCGC Air Grayleg (WAVR 425); identified as surplus to Navy needs in March 1948; transfer to Coast Guard canceled and sold 21 July 1950; fate unknown. Spec block: displacement 105 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,' and two depth charge tracks; propulsion two 1,540bhp General Motors (Electro-Motive Div.) 16-184A diesel engines, two shafts. Call sign Nan - William - Tare - Zebra. Page states 'There is no DANFS history available for SC-665' and no image exists.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1950
- Population
- Dachel-Carter construction trades (1941-42); crew (1942-c.1946)
- Limitations
- Ship-specific registry compilation only; no asbestos or material content. NavSource is a volunteer secondary compilation, not a primary registry - milestone dates corroborated by shipbuildinghistory (Colton) and uboat.net but no primary source (DANFS entry, NVR card, deck log) was directly inspected; deck logs exist at NARA but are undigitized (ev-05).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-01
-
[3]ShipbuildingHistory (Tim Colton), Dachel-Carter Shipbuilding, Benton Harbor MI - yard history and hull table [other_primary]
- Locator
- dachelcarter.htm yard narrative and production table row 'SC 665'
- Finding type
- vessel_history
- Finding
- Builder documentation for this hull: Dachel-Carter was started in 1915 by Peter Dachel and A. B. Carter, two former employees of Truscott Boatbuilding; it struggled through the 1930s, was saved by new investors, grew to over 600 employees during WWII, and folded after the war. The yard table lists 'SC 665 | US Navy | Sub Chaser | 136d | 110 | 10-Aug-42 | Sold 1950' - delivered 10 August 1942 (matching the NavSource commissioning date) with disposition 'Sold 1950' (NavSource gives 21 July 1950). Sister hull SC 664 (delivered 25-Aug-42) went to the Foreign Liquidation Commission in 1946; the yard also built PCS 1417-1420.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1945 (yard war production)
- Population
- Dachel-Carter yard workforce (peak 600+ employees, WWII)
- Limitations
- Shipyard-level production table, not a hull record - documents build/delivery/disposal facts, contains no asbestos, material, survey, or crew content. Yard history is compiler narrative (Colton), not a primary document; no asbestos documentation for this yard was located. The site later became a Whirlpool machining plant - not an Atlas shipyards.json entry.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-02
-
[4]ShipbuildingHistory (Tim Colton), U.S.C.G. Air-Sea-Rescue Cutters (WAVR) table; corroborated by James T. Flynn Jr., U.S. Coast Guard 'W' Numbers register (media.defense.gov FLYNN_USCG-W-NUMBERS2014.PDF) [other_primary]
- Locator
- wavr.htm table row '665 | 425 | Air Grayleg'; Flynn W-Numbers register 'WAVR 425 Air Graylag ex. SC-665'
- Finding type
- vessel_history
- Finding
- This hull's post-war disposition is tied to the Coast Guard air-sea-rescue conversion program: 71 SC-497-class wooden sub chasers were delivered to the Coast Guard as Air-class WAVR rescue cutters. SC-665 was assigned WAVR-425 and the name Air Grayleg, but the WAVR table's disposition column reads 'Transfer cancelled' - she was never delivered to the Coast Guard. Flynn's USCG 'W' Numbers register independently lists 'WAVR 425 Air Graylag ex. SC-665' (spelling variant: Graylag vs Grayleg). Consistent with NavSource: scheduled for transfer 1945, canceled, sold 21 July 1950.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1950
- Population
- Crew during lay-up/surplus period (1945-48); unknown purchaser (1950)
- Limitations
- Documents a canceled transfer, not Coast Guard service - SC-665 was never a USCG vessel and 'Air Grayleg' was never an operating cutter name for her. Flynn PDF (media.defense.gov) returns HTTP 403 to automated fetch; its register line was verified via search-index text. No asbestos content. The canceled-transfer population (work done aboard to prepare conversion, if any) is undocumented.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-03
-
[5]ShipbuildingHistory (Tim Colton), Inland Waterways (Duluth MN) yard page - vs. same compiler's WAVR table and Flynn USCG register [other_primary]
- Locator
- inlandwaterways.htm row 'SC 670'; wavr.htm rows 665/425 and 670/426; Flynn W-Numbers WAVR 425/426
- Finding type
- historical_record
- Finding
- CORRECTION: within the same secondary compilation, the Inland Waterways (Duluth MN) yard page lists 'SC 670 ... To USCG 1945 as Air Grayleg (WAVR 425)' - mis-attributing this hull's assigned cutter identity to a different boat. The authoritative resolution: Flynn's USCG 'W' Numbers register assigns 'WAVR 425 Air Graylag ex. SC-665' and 'WAVR 426 Air Grebe ex. SC-670'; Colton's own WAVR table shows '665 | 425 | Air Grayleg ... Transfer cancelled' and '670 | 426 | Air Grebe ... Sold 1949 as Grebe'; NavSource's SC-665 page repeats the canceled WAVR-425 assignment. The WAVR-425/Air Grayleg identity belongs to SC-665, not SC-670.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1950
- Limitations
- Corrects a cross-source attribution error, not a material/exposure claim. Flynn's register lists the canceled assignment without flagging the cancellation; the 'never transferred' fact rests on NavSource + the WAVR table's disposition column.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-04
-
[6]NARA History Hub, staff reply on SC-665 deck-log holdings (Navy-Marine-Coast Guard forum) [other_primary]
- Locator
- History Hub thread 46187, NARA staff reply (deck logs Aug 10 1942 - Jul 1 1946)
- Finding type
- historical_record
- Finding
- NARA staff confirmed deck-log holdings for this hull: 'Our main WWII holdings for this ship include Deck Logs from August 10, 1942 to July 1, 1946' - i.e., the log series begins at commissioning and ends mid-1946, consistent with a mid-1946 out-of-service date that no located source states explicitly. The logs are held at NARA for order/reproduction, not digitized.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Crew, Aug 1942 - Jul 1946 (log coverage window)
- Limitations
- Archival lead only: confirms logs exist, not their content - no operating area, port calls, availabilities, or material information is documented by this source. The History Hub thread page is JS-rendered and could not be fully extracted; staff-reply text verified via search-index capture.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-05
-
[7]ShipbuildingHistory (Tim Colton), Sub Chasers Built During WWII (SC, PC, PCE, PCER, PCS) - program-level table and intro [other_primary]
- Locator
- pc2.htm intro paragraph and SC-665 table row
- Finding type
- historical_record
- Finding
- Class/program context for this hull's type: 973 sub chasers and related craft were built during WWII by 74 boatbuilders and yachtbuilders, in five types sharing one pennant-number series; 'The SCs were 110-foot wooden Sub Chasers' built mostly by small yacht/boat yards like this hull's builder. More than 400 were transferred to allied navies; 70 were converted to Air-Sea-Rescue boats (WAVR) for the Coast Guard (this hull's own conversion canceled); at least 40 were lost in action; most of the rest went to MARCOM or the State Department's Foreign Liquidation Commission for disposal. The SC-665 row reads 'SC 665 | Dachel-Carter SB | Benton Harbor MI | 148 | 110 | 10-Aug-42 | Sold 1950.'
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1950
- Population
- SC-497-class construction trades across 74 yards (1941-44)
- Limitations
- Program-level compilation; establishes type and disposition context, not hull-specific detail beyond the one table row. Boat-count and transfer figures are compiler tallies; Wikipedia's class article gives 438 completed SC-497s vs. uboat.net's 443-boat listing - count conflict carried in gaps, not asserted. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-06
-
[8]Era inference built on: NavSource SC-665 spec block (wooden hull, two GM 16-184A diesels); shipbuildinghistory class/program tables (110-ft wooden SCs by small yacht yards); absence of steam plant on this type [other_primary]
- Locator
- NavSource specifications block (propulsion line); shipbuildinghistory pc2.htm type description
- Finding type
- asbestos_application
- Finding
- A diesel-powered wooden patrol craft built in 1941-42 sits inside the Navy's documented asbestos-use era, but with a narrower scope than steam vessels: no boilers or steam plant means no boiler/turbine lagging pathway. Era-standard applications aboard a diesel patrol craft of this period were engine and exhaust-system lagging, gaskets, valve and flange packing, and electrical insulation - materials that commonly contained asbestos fiber in WWII-era marine construction. The small confined engine spaces of a 110-foot craft concentrate whatever material was present.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1950
- Population
- Dachel-Carter construction trades (1941-42); crew (1942-c.1946); any maintenance/disposal trades (1948-50)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or deck-log evidence located for SC-665, and the wooden hull carried materially less asbestos scope than a steel steam vessel. Names era-standard applications, not confirmed installed materials; no quantity, no manufacturer attribution. CourtListener unsearched this session (fleet pacing budget exhausted) - litigation status is an open gap.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-07
-
[9]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-c.1946).
- 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 to wooden patrol craft. Full text not retrieved (gao.gov returns HTTP 403 to automated fetch, confirmed 2026-10-03) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-08
-
[10]Batch-8039 search ledger (this record): NavSource SC-665 page; shipbuildinghistory Dachel-Carter yard, WAVR, pc2, Inland Waterways tables; Flynn USCG W-Numbers register; uboat.net; NARA History Hub deck-log holdings; NVR; GAO product page; CourtListener (blocked); secondary web sweep [other_primary]
- Locator
- search_ledger rows sl-uss-sc-665-sc665-01 through -10
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming SC-665 (or PC-665) was found in the public sources searched. There is no DANFS entry for this hull (NavSource confirms; NHHC S-index 404s). No NVR entry exists (disposed 1950, pre-coverage). No law-firm/marketing asbestos content naming this hull was located - unlike larger hulls, even marketing listicles do not mention SC-665. CAVEAT: CourtListener could not be queried this session - the fleet-wide pacing budget was exhausted on every attempt; logged as blocked in search_ledger, not as a negative result.
- 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 the litigation repository search is a genuine open gap (throttled, not run). Undigitized deck logs (NARA, Aug 1942 - Jul 1946) and any USMC/disposal-sale file are open leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-665-sc665-09