Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
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[1]research packet 921-packet.md (2 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: MISMATCH — real identity: USS **SC-663** — wooden submarine chaser. (Class not asserted for 663; no direct class source located.)
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Evidence ID
- uss-sc-663-sc663-pkt-921-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, SC-663 (ex-PC-663) - construction timeline, designation history, Soviet service summary, specification block (verified live; navsource.org domain is dead - .net is canonical) [other_primary]
- Locator
- NavSource 12/150663.htm header block, timeline list, specification block, photo caption (PCS-1414)
- Finding type
- vessel_history
- Finding
- Timeline for this hull: laid down 4 November 1941 by Fisher Boat Works, Detroit, MI; launched 22 April 1942; commissioned USS PC-663 2 July 1942; reclassified SC-663 April 1943; 'Transferred to the Soviet Union 4 June 1945 and reclassified BO-318'; assigned to the Soviet Pacific Fleet; placed out of service 15 April 1955 and laid up in reserve; 'Scrapped 17 October 1955.' Call sign Nan-William-Tare-Sugar. Spec block: 148 t.; 110'10"; 17' beam; 6'6" draft; 21 kts.; complement 28; one 40mm mount, two .50 cal MG, two Y-guns, two DC tracks; two 1,540 bhp GM (EMD) 16-184A diesels, two shafts. Photo: moored outboard of PCS-1414.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1955
- Population
- Fisher Boat Works construction workers (1941-42); U.S. Navy crew (1942-45); Soviet crew (1945-55); dismantlers (post-1955)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track official records but are unverified line-by-line. Its 'Transferred 4 June 1945' conflicts with the NHHC transfer-table date 5 June 1945 (the 4 June figure matches the Soviet crew-acceptance date in sewar.ru - see ev-07 and ev-11). The spec block is the printed class-standard block; its 148-ton figure conflicts with shipbuildinghistory's 136-ton yard-table figure and the 98-ton class figure at splinterfleet.org, and the hull-specific engine fit (16-184A vs 8-268A) is unverified. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-01
-
[3]Richard A. Russell, Project Hula: Secret Soviet-American Cooperation in the War Against Japan (Naval Historical Center, Department of the Navy, 1997) - appendix transfer table and Soviet-designation glossary (full text via HyperWar/ibiblio mirror of the NHHC publication) [nhhc_danfs]
- Locator
- Appendix 'Ships Transferred under Project Hula,' transfer table p. 39 (SC663/B0-318 row, date dittoed from the SC657 '5 June' row); designation glossary p. 40; table framing note on transfer-day decommissioning
- Finding type
- vessel_history
- Finding
- NHHC official transfer table for this hull: 'SC663 | B0-318 | " | 1955-stricken' - the transfer-date column dittoes the 5 June date printed on the SC657 row immediately above, i.e., transferred to the Soviet Navy at Cold Bay on 5 June 1945 as BO-318, Soviet disposition 1955-stricken. Per the table's framing, the U.S. Navy decommissioned each ship on the day of transfer and the Soviet Navy simultaneously commissioned it; no Hula ship received a Soviet name. Glossary: BO = 'bolshiye okhotniki za povodnimi lodkami - large hunters for submarines.' Appendix sources: Department of the Navy Ships Data NAVSHIPS 250-012 (vol. II, 1 Jan 1949) and S. S. Berezhnoi, Flot SSSR lendl-iza reference (1994).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1955
- Population
- U.S. Navy decommissioning detail and Soviet acceptance crew, Cold Bay (June 1945)
- Limitations
- Official Navy historical publication compiled from U.S. and Russian archives - the authoritative U.S.-side transfer record; names this hull in a program table, not a ship dossier. '1955-stricken' is the Soviet-side disposition line; NavSource/sewar.ru give 15 April 1955 removal from the combat list/mothballing and 17 October 1955 striking followed by dismantling - consistent, not contradictory. The ditto-mark reading of the transfer date is table mechanics, not a separate dated entry; uboat.net independently prints 5 June. Contains no asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-02
-
[4]Russell, Project Hula (NHHC 1997) - program narrative: subchaser training at Cold Bay, wooden-hull damage and Dutch Harbor repair trips, equipment shortages, convoy departures and routing [nhhc_danfs]
- Locator
- Project Hula pp. 18-21 (damage/repair narrative, convoy departures and routing), pp. 10-11 (Soviet contingent organization), p. 1441-area Seattle supply-problems passage
- Finding type
- vessel_history
- Finding
- Program-level documentation of the conditions under which this hull left U.S. service: Soviet trainees (16th Minesweeper Division, 2nd Subchaser Division - twenty vessels) disembarked at Cold Bay 10-14 April 1945 under Rear Admiral Boris D. Popov, training beginning 16 April; 'the wooden-hulled vessels, such as the motor minesweepers and subchasers, frequently suffered hull damage from the rough seas' and nine subchasers plus one motor minesweeper made the ~400-mile round trip to Dutch Harbor for major repairs, delaying the subchaser program eight days; ships arrived under-equipped and 'on-the-spot revisions' to equipment lists were exercised; 'shoddy repair work and supply shortages in Seattle caused major difficulties.' Third Cold Bay-to-Petropavlovsk convoy - three minesweepers and seven subchasers - departed 7 June 1945 under U.S. Navy escort, routed via Unimak Pass and Adak, then independently north of the Komandorskii Islands to Petropavlovsk; a fourth convoy (two minesweepers, six subchasers, four LCI(L)s) departed 11 June.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1945
- Population
- Cold Bay training/transfer personnel (American and Soviet); Dutch Harbor repair trades (April-June 1945)
- Limitations
- Program-level, not hull-level: SC-663 is in the 5 June transfer cohort but the narrative does not name her for any specific repair trip, equipment revision, or convoy assignment - her inclusion in the third convoy is consistent with her transfer date and the Russian-side 17 June Pacific-Fleet entry, but the convoy's SC roster is not itemized (codenames.info describes the 5-June cohort of eight subchasers as 'departed' that day - transfer-vs-departure ambiguity, see ev-11). Maintenance-disturbance relevance (equipment revisions, repair trips) is contextual only. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-03
-
[5]uboat.net Allied Warships, USS SC-663 (SC-663) - data block and wartime event log sourced to USS Jallao's first war patrol report (secondary compilation) [other_primary]
- Locator
- uboat.net/allies/warships/ship/8880.html data block and 'Notable events' log (6 Aug 1944 Jallao escort entry, source 1 = USS Jallao report of first war patrol)
- Finding type
- vessel_history
- Finding
- Secondary data record for this hull: ordered 18 September 1941; laid down 4 November 1941 by Fisher Boat Works, Detroit; launched 22 April 1942; commissioned 2 July 1942; 'End service 5 Jun 1945'; 'Transferred to the USSR on 5 June 1945' (agreeing with the NHHC transfer-table date, not NavSource's 4 June). Event log: on 6 August 1944 submarine USS Jallao (T/Cdr. J. B. Icenhower, USN) departed New Orleans for the Panama Canal Zone with escort provided until point 'F' (21 deg 01 min N, 83 deg 30 min W) by USS SC-663, commanding officer Lt.(j.g.) T. A. Coffey, USNR - sourced to the USS Jallao report of first war patrol.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Population
- SC-663 crew under Lt.(j.g.) T. A. Coffey, USNR (mid-1944); USS Jallao (escorted submarine)
- Limitations
- Volunteer secondary compilation derived from war diaries/patrol reports - the Jallao escort event is sourced to the submarine's own war-patrol report, but the data block is not independently verified line-by-line. Establishes a Gulf of Mexico escort orbit in mid-1944 consistent with the COMINCH TF-03 chart (ev-05). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-04
-
[6]U.S. Fleet, Headquarters of the Commander in Chief, Navy Department, 'Composition of Task Forces,' 1 February 1944 (H. H. Smith-Hutton, Captain USN, Combat Intelligence Division F-20) - declassified COMINCH organization chart; FDR Map Room Papers, digitized by the Marist College FDR Library project [other_primary]
- Locator
- mr0670.pdf, TF 03 (Gulf Sea Frontier) section, 'SC's' vessel block under Comdt. 7th Naval District ('511 663 1000 1064 1295' line); chart cover page 'Composition of Task Forces, 1 February 1944'
- Finding type
- historical_record
- Finding
- Primary U.S. Navy organization document placing this hull in the Gulf Sea Frontier orbit in early 1944: the 1 February 1944 'Composition of Task Forces' chart lists '663' in the 'SC's' block of Task Force 03 (U.S. Fleet, Gulf Sea Frontier; Rear Adm. F. Monroe, ComSeven & ComGulfSeaFron), in the vessel list of the Striking & Escort Group section under Comdt. 7th Naval District - alongside SCs 453, 499, 500, 511, 512, 646, 647, 653, 656, 660, 661, 673, 674, 675, 685, 710, 711, 989, 1000-1002, 1057-1064, 1276-1295, 1301, 1342-1343, 1353. Consistent with her documented August 1944 New Orleans-to-Panama escort of USS Jallao (ev-04).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-02-01
- Population
- SC-663 crew assigned Gulf Sea Frontier / 7th Naval District (early 1944)
- Limitations
- Archival lead, not a work or exposure record: an org-chart entry establishes organizational assignment, not operations performed or materials aboard. Scanned chart OCR is heavily degraded (companion hulls print as 'SC 's', garbled spacing); the '511 663 1000 1064 1295' line containing '663' is legible in context. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-05
-
[7]National Archives, Special List #44, by Ship Numbers [other_primary]
- Locator
- PDF, ship-number section, line for SC-663 (9/23/1943 - 6/4/1945)
- Finding type
- historical_record
- Finding
- The National Archives Special List #44 lists SC-663 with a begin date of 9/23/1943 and an end date of 6/4/1945 in the ship-number logbook series - deck-log coverage spanning her Gulf Sea Frontier period through the day before her Soviet transfer.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-09-23 to 1945-06-04
- Population
- SC-663 deck-log series (1943-1945)
- Limitations
- This Navy logbook coverage index confirms the date range in the identified series; it does not provide log content, a complete service history, a disposition record, or asbestos information. The series is not publicly digitized - box-level retrieval is an open archival lead. The 6/4/1945 end date coincides with the Soviet crew-acceptance date (sewar.ru), not the 5 June U.S. transfer date.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-06
-
[8]sewar.ru (Russian WWII naval reference compilation), 'Tip "SC". BO-318 (do 10.01.1945 g. "SC-663")' - Soviet-service record for this hull (verified live) [other_primary]
- Locator
- sewar.ru bolshie-ohotniki BO-318 page (single-paragraph service record)
- Finding type
- vessel_history
- Finding
- Russian-side secondary record for this hull (translated): 'Entered service 2.07.1942. Accepted by the Soviet crew 4.06.1945. Joined the Pacific Fleet (TOF) 17.06.1945. On 15.04.1955 removed from the combat composition and placed in conservation (mothballed). Excluded from the Soviet Navy list 17.10.1955, disarmed and turned over to the property fund department for dismantling.' The page title notes she was carried on Soviet Navy ship lists from 10.01.1945 (pre-transfer administrative listing).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1955
- Population
- Soviet crew (1945-1955); dismantling workers (post-1955)
- Limitations
- Private Russian-language secondary compilation - not an official registry; its chronology tracks Berezhnoi-era Soviet fleet references but is not independently verified line-by-line. The 4.06.1945 'accepted by Soviet crew' date explains NavSource's transfer-date variant (see ev-11); the official U.S. transfer/decommission date is 5 June (ev-02, uboat.net ev-04). The Pacific-Fleet entry date (17 June) is consistent with a ~7 June convoy departure plus transit. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-07
-
[9]Shipbuilding History (T. Colton), Fisher Boat Works, Detroit MI - yard history and construction table (verified live) [other_primary]
- Locator
- fisher.htm yard description and construction table, SC 663 row
- Finding type
- historical_record
- Finding
- Yard-table row for this hull: 'SC 663 | US Navy | Sub Chaser | 136 tons | 110 ft | 2-Jul-42 | To the USSR 1945 as BO 318.' Yard history: Fisher Boat Works began in the early 1930s as Russell J. Pouliot Boat Works, acquired by William P. Fisher in 1937, closed after the war; located on Motor Boat Lane, Detroit (site of the present Gregory Marina). The same yard built SC-453 - the SC-497-class prototype - plus PT-3/PT-4 prototypes and sister chasers SC-499, SC-500 (BO-319), SC-662, SC-712-721, and SC-1347-1350.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Population
- Fisher Boat Works construction workforce (1941-42)
- Limitations
- Enthusiast-maintained construction reference (secondary), consistent with NavSource/uboat.net milestones. Its 136-ton displacement conflicts with NavSource's 148-ton spec block and the 98-ton class figure - unresolved variant (see gaps). Contains no asbestos or material content; the yard closed post-war and no yard-level asbestos record is located.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-08
-
[10]Era inference built on: NavSource SC-663 specification block (wooden-hulled SC-497 class, 2 x GM 16-184A diesel, no steam plant); splinterfleet.org SC-497-class facts table (verified live: 98 tons, 111'6-3/4", GM 8-268-A or 16-184-A diesels, wooden hull); GAO HRD-80-2 Navy asbestos-era context (see ev-10) [other_primary]
- Locator
- NavSource 12/150663.htm specification block; splinterfleet.org/facts-and-specifications (WWII SC-497 column)
- Finding type
- asbestos_application
- Finding
- A small wooden-hulled diesel submarine chaser built 1941-42 sits inside the Navy's documented asbestos era, but her material profile differs sharply from a steel steam vessel: no boilers, no steam lines, no turbine lagging. Plausible era-standard small-craft applications aboard a boat of this type and period: diesel engine/exhaust lagging, engine and piping-flange gaskets, valve packing, electrical cable insulation, and confined-space accommodation insulation. The ACM burden of a 110-ft wooden chaser was materially lower than that of a steam combatant.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1955
- Population
- Fisher Boat Works construction workers (1941-42); U.S. crew (1942-45); Cold Bay transfer personnel (1945); Soviet crew and dismantlers (1945-55)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for SC-663. Names plausible era-standard applications, not confirmed installed materials; no quantity, no manufacturer attribution. The wooden hull itself is not an asbestos product. Transfer-era equipment churn (ev-03) is a documented disturbance pathway at program level, not evidence of ACM aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-09
-
[11]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 to automated fetch, 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 U.S. service era (1942-45), as well as her period in Soviet custody (1945-55).
- 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, per prior batch sessions) - content via product-page description. The report's focus is shipyard-worker exposure, which frames the era, not small-vessel material inventories.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-10
-
[12]Designation cross-check: NavSource SC/PC index page (verified live - explains the shared numerical series, the 1943 PC/SC type split, and 'ex-PC' designations); Wikipedia PC-461-class completion list (PC-461 to -496, PC-542 to -627, PC-776 to -825, PC-1077 to -1265, PC-1546 to -1569 - the 628-669 block absent); NavSource SC-663 transfer line vs NHHC appendix date and sewar.ru crew-acceptance date [other_primary]
- Locator
- NavSource 12/01idx.htm 'Submarine Chasers (SC) and (PC)' header text; PC-461-class completed-list enumeration; NavSource 12/150663.htm transfer line vs Russell appendix p. 39 and sewar.ru BO-318 record
- Finding type
- historical_record
- Finding
- CORRECTION, two items: (1) 'PC-663' was a commissioning-era designation only (Jul 1942 - Apr 1943) - this hull was never a PC-461-class vessel; the completed steel-PC numbering series skips the 628-669 block entirely because those numbers were assigned to wooden 110-ft SC-type hulls, reclassified SC-xxx in the April 1943 type split. The batch re-scope note ('PC-663 never existed as a PC vessel') is confirmed. (2) Transfer-date reconciliation: NavSource's 'Transferred to the Soviet Union 4 June 1945' is not the U.S. transfer date - it matches the Soviet crew-acceptance date in sewar.ru (accepted by Soviet crew 4.06.1945); the official U.S.-side decommission/transfer date per the NHHC Project Hula table and uboat.net is 5 June 1945, and she departed Cold Bay with the 5-June cohort (third convoy departed 7 June per Russell; codenames.info dates the cohort's departure 5 June).
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945 (designation/transfer window)
- Limitations
- Corrects a designation misreading and a date mislabel, not a material claim. The PC-461 completion list is carried via secondary enumeration (Wikipedia class article) against the NavSource index narrative - a primary BuShips numbering list was not consulted. The '4 June = crew acceptance' reconciliation is inference from matching dates across sources, not a stated explanation in any source. Transfer-vs-departure phrasing for the 5-June cohort is ambiguous across sources (5 vs 7 June).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-11
-
[13]Batch-8037 search ledger (this record): NavSource (verified live); NHHC Project Hula full text; FDR Map Room task-force chart; NARA Special List #44; uboat.net; sewar.ru (Russian-side); splinterfleet.org class specs; shipbuildinghistory yard table; codenames.info Hula list; NVR (no record); NHHC/DANFS (no entry); CourtListener (blocked - fleet pacing); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-sc-663-sc663-01 through sl-uss-sc-663-sc663-14
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, museum record, or litigation naming SC-663 / PC-663 / BO-318 was found in the public sources searched. A general web sweep for the hull designations plus asbestos/litigation terms surfaced only name collisions (South Carolina 'S.C.' citations, Maine and Mississippi legislative 'SC 663' bill numbers, a tort-law citation) - and a Facebook post reprinting a period 'Oceanic Review' October 1941 chronology in which 'asbestos, and steel' describes a Cardiff-bound ship's cargo in a separate list item, not this hull (social-media source, not citable; collision resolved). CAVEAT: CourtListener could not be queried this session - the fleet pacing budget was spent on each attempt and the helper declined the requests; 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 (paced, not run). NARA deck logs (SL-44 coverage 9/23/1943-6/4/1945), Fisher Boat Works contract records, BuShips small-vessel material lists, and Soviet dismantling records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-663-sc663-12