Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
-
[1]research packet 934-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: PHANTOM
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-754-pc754-pkt-934-packet-md
-
[2]DANFS collective entry, SC-701 - SC-800 (NHHC): SC-754 one-line entry [nhhc_danfs]
- Locator
- DANFS 'SC-701 - SC-800' page, SC-754 entry
- Finding type
- vessel_history
- Finding
- DANFS: 'SC-754 - Built at Robinson Marine Construction Co., Benton Harbor, Mich. Keel laid 6/6/42. Launched 2/23/43. Commissioned 5/17/43. Transferred to Russia 8/17/45.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- Robinson Marine construction trades (1942-43); U.S. Navy crew (1943-45)
- Limitations
- Ship-specific construction and disposal milestones only; collective one-line entry carries no operational narrative, no reclassification detail (PC-754 laid-down designation appears only in NavSource), and no asbestos or material content. Live NHHC page verified 2026-10-03.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-01
-
[3]NavSource Online: Submarine Chaser Photo Archive, SC-754 (ex-PC-754) - construction, reclassification, transfer, Soviet service, specifications [other_primary]
- Locator
- NavSource 12/150754.htm header block, SC-497 Class specification block, timeline list
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: 'Laid down 6 June 1942 as PC-754 by the Robinson Marine Construction Co., Benton Harbor, MI; Launched 23 February 1943; Reclassified SC-754 in April 1943; Commissioned USS SC-754, 17 May 1943; Transferred to the Soviet Union 17 August 1945 and reclassified BO-324; Assigned to the Pacific Fleet 31 August 1945; Placed out of service 7 October 1955 and scrapped.' Call sign Nan-Xray-Oboe-Nan. 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 Gun,' two depth charge tracks; propulsion two 1,540 bhp General Motors (Electro-Motive Div.) 16-184A diesel engines, two shafts. Page notes no image and no standalone DANFS history for this hull.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1955
- Population
- Robinson Marine construction trades (1942-43); U.S. Navy crew of 28 (1943-45); Soviet Navy crew (1945-55); Soviet breakers (1955)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates here concur with DANFS (build/commission) and the NHHC Hula appendix (transfer date, 1955 disposal year) on every overlapping point. The Soviet-side details (Pacific Fleet assignment 31 Aug 1945; out of service 7 Oct 1955; scrapped) rest on NavSource alone for the specific dates. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-02
-
[4]NavSource Submarine Chasers (SC) and (PC) index - type-wide April 1943 reclassification context and SC-497-class parameters [other_primary]
- Locator
- NavSource 12/01idx.htm 'Submarine Chaser / 110' Wooden Hull' and '173' Steel Hull' index headers
- Finding type
- historical_record
- Finding
- CORRECTION of the cataloged class: the source database lists this hull as PC-754 of the PC-461 class. NavSource documents otherwise: 'By 1943, it was felt desirable to differentiate between the two types. The type symbol PC was retained for the steel 173-footers, and the separate symbol SC was adopted for the 110-foot vessels.' This hull was a 110-foot wooden SC-497-class craft ordered under a PC number and reclassified SC-754 in April 1943 before commissioning - never a member of the steel 173-foot PC-461 class (PC-461 to PC-496, PC-542 to PC-627, PC-776 to PC-826, PC-1077 to PC-1265 - a numerical series PC-754 never fell within). Class context: 580 SC-497-class wood-hulled 110-foot submarine chasers were built during WWII; 142 went to Allies under Lend-Lease.
- Verification
- verified
- Role
- correction
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1943 (reclassification era)
- Limitations
- Corrects a class assignment and designation lineage, not a material/asbestos claim. The class correction itself is ship-specific, but the supporting documentation is class-level; the laid-down-as-PC-754 fact for this specific hull rests on NavSource (secondary compilation), concordant with the uboat.net build table. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-03
-
[5]Richard A. Russell, 'Project Hula: Secret Soviet-American Cooperation in the War Against Japan' (Washington, DC: Naval Historical Center, NHHC publication; HTML transcription at generalstaff.org) - program narrative and transfer appendix [nhhc_danfs]
- Locator
- Project Hula monograph, Appendix table (SC 754 / BO-324 / 17 Aug. / 1955-stricken) and 'The End of the Pacific War'/'subchaser program' narrative sections
- Finding type
- vessel_history
- Finding
- NHHC's Project Hula monograph documents this hull's transfer: the appendix 'U.S. Navy Combatant Ships Transferred [to the Soviet Navy] May-September 1945' lists 'SC 754 | BO-324 | 17 Aug. | 1955-stricken' - transfer to the Soviet Navy on 17 August 1945, stricken from the Soviet navy list in 1955. The appendix sources are Department of the Navy, Ships Data: U.S. Naval Vessels vol. II, 1 January 1949 (NAVSHIPS 250-012) and S. S. Berezhnoi, Flot SSSR: Korabli i suda lendliza. Program context: Hula was the secret transfer program conducted at Cold Bay, Alaska, where Navy Detachment 3294 trained roughly 12,000 Soviet personnel and transferred 149 ships and craft, including 32 submarine chasers redesignated 'BO' (bolshiye okhotniki - large submarine hunters). The narrative also records that the subchaser transfer program suffered shoddy repair work and supply shortages in Seattle, and that 13th Naval District subchasers were substituted to keep the program on schedule.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1955
- Population
- Soviet trainees and U.S. instructor cadre at Cold Bay (1945); Soviet Navy crew (1945-55)
- Limitations
- The appendix names this hull and its transfer date/Soviet designation/disposal year - ship-specific for those fields. The Cold Bay transfer point and Seattle/13th Naval District substitution detail are program-level: the book does not state whether SC-754 was an originally earmarked or a substitute subchaser, nor her pre-transfer station. 'Stricken 1955' is the Soviet-side disposal year; NavSource supplies the unverified specific date (7 Oct 1955, out of service, scrapped). Transcription host generalstaff.org is not the NHHC site; content checked against the NHHC search-catalog bibliographic entry for the Russell monograph.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-04
-
[6]NARA Special List #44, 'List of Logbooks of US Navy Ships, Stations, and Miscellaneous Units, 1801-1947' (by ship number) - SC-754 deck log coverage [other_primary]
- Locator
- NARA sl-44-ship-number.pdf, p. 109, SC-754 line: 'SC-754 5/27/1943 8/16/1945'
- Finding type
- historical_record
- Finding
- NARA Special List #44 (ship-number ordering, p. 109 of the PDF) documents textual deck logs for SC-754 covering 5/27/1943 through 8/16/1945 - ten days after commissioning through the day before her Soviet transfer. These logs are the primary undigitized lead for her U.S. operational history (operating areas, availabilities, commanding officers), for which no public narrative was located.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1945
- Population
- U.S. Navy crew (log coverage period)
- Limitations
- Archival lead only: SL-44 establishes that the logs exist in NARA textual holdings (Archives II, College Park), not their content - the logs are not publicly digitized (SC-754 does not appear in NARA's online deck-log index). Coverage ends 16 Aug 1945, one day before transfer; no post-transfer or fitting-out-period (pre-27 May 1943) log coverage is listed. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-05
-
[7]ShipbuildingHistory.com (Colton), Robinson Marine Construction yard list, Benton Harbor MI - SC-754 build entry and yard profile [other_primary]
- Locator
- shipbuildinghistory.com/shipyards/yachtsmall/robinsonmi.htm - Robinson Marine Construction table, SC 754 row
- Finding type
- vessel_history
- Finding
- The Colton yard list corroborates this hull's construction: 'SC 754 | US Navy | Sub Chaser | 136 | 110 | 17-May-43 | To the USSR 1945 as BO 324' - matching DANFS/NavSource on builder, commission date, and Soviet designation. Yard profile: 'Robinson Marine Construction was started in 1925, by Glen Robinson, who had been treasurer of Dachel-Carter Shipbuilding: it closed in 1960. The yard was on the northeast corner of the industrial island in St. Joseph' (Benton Harbor/St. Joseph, MI).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- Robinson Marine Construction trades (1942-43)
- Limitations
- Specialist secondary reference (compiled from Maritime Commission and yard records), not a primary registry - used as corroboration only; every overlapping fact it carries is also in DANFS or the NHHC Hula appendix. Yard dates and location describe the builder, not any material aboard the hull. No asbestos content; no yard-level asbestos or hygiene record for Robinson Marine was located anywhere.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-06
-
[8]Era inference built on: NavSource SC-754 spec block (2 x GM EMD 16-184A diesels, wooden 110-foot hull); NavSource SC-497-class index (580 wood-hulled 110-foot subchasers); GAO HRD-80-2 program context (see ev-08) [other_primary]
- Locator
- NavSource spec block; NavSource SC-497 class index; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A 110-foot wooden-hulled diesel subchaser built 1942-43 sits inside the Navy's documented heavy asbestos-use era, but the era inference for this hull type is materially narrower than for a steel steam combatant: with no boilers or turbines, the boiler/steam-line lagging pathway does not exist. Era-consistent applications aboard a diesel patrol craft of this period were engine-exhaust lagging, gaskets and valve packing, electrical insulation, and possible asbestos-cement (transite-type) board in machinery spaces. The confined 110-foot hull and 28-man crew bound any at-risk population at construction and in service.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1955
- Population
- Robinson Marine construction trades (1942-43); U.S. crew of 28 (1943-45); Soviet crew (1945-55)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for SC-754. Names era-standard applications, not confirmed installed materials; the wooden-hull/diesel configuration argues for a smaller asbestos footprint than steam vessels but does not document one. No quantity; no manufacturer attribution.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-07
-
[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 construction era (1942-43) and entire U.S. service (1943-45).
- 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 to small wooden diesel craft. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403 - documented in Batch 01 and Batch 98; confirmed pattern this session via prior batches) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-08
-
[10]Batch-8128 search ledger (this record): DANFS collective entry; NavSource SC-754 page and SC/PC index; NHHC Project Hula monograph transcription; NARA SL-44 PDF (full text extracted); shipbuildinghistory.com yard list; CourtListener (4 base queries completed - all hits name collisions); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-pc-754-pc754-01 through -09
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, museum documentation, or litigation naming SC-754 / PC-754 / BO-324 was found in the public sources searched. CourtListener base queries ran 2026-10-03 (all 4 completed): 'SC-754' opinions 8 hits all name collisions (state criminal cases matching 'S.C. 754' reporter cites); 'PC-754' opinions 0 results; 'SC-754' dockets 16 hits all name collisions (bankruptcy/district dockets - '28 USC 754' statute cites, document numbers; the only 'asbestos' string anywhere is an 'Official Committee... Asbestos-Related Claims' party name inside the Motors Liquidation/GM bankruptcy, not vessel litigation); 'PC-754' dockets 6 hits all name collisions (MDL/bankruptcy fragments, 'Stewardship' substring). No asbestos-qualified variants needed - no base query overflowed 20 results. Dedicated asbestos-named web sweeps returned only document-number collisions - no asbestos content of any kind names this hull.
- 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 - the hull's NARA deck logs (coverage 5/27/1943-8/16/1945) and any Robinson Marine construction records are undigitized leads. Soviet-custody period (1945-1955) is outside U.S. documentation entirely. CourtListener classification is at the name-match level: collisions were identified by citation context, not full-text review of every hit. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-754-pc754-09