Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 919-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-sc-646-sc646-pkt-919-packet-md
-
[2]Archived Naval History and Heritage Command, DANFS, SC-601–SC-700, entry SC-646 (Wayback capture 2025-12-09) [nhhc_danfs]
- Locator
- SC-646 entry in DANFS page SC-601–SC-700
- Finding type
- vessel_history
- Finding
- NHHC's SC-646 entry states that the vessel was built by Robinson Marine Construction Co., Benton Harbor, Michigan; keel laid 23 September 1941; launched 21 May 1942; commissioned 1 July 1942; and transferred to Russia 26 May 1945.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Limitations
- The current NHHC DANFS page returned HTTP 404 on direct fetch. The archived copy was retrieved and checked live on 2026-10-03; it is labeled as an archived citation. This brief entry does not state a personal name, complement, operational narrative, asbestos condition, or exact later disposition. The supplied SC-646 hull designation is used; no PC-646 predecessor claim is made.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-646-sc646-01
-
[3]Richard A. Russell, Project Hula: Secret Soviet-American Cooperation in the War Against Japan (Naval Historical Center, 1997), Appendix, U.S. Navy Combatant Ships Transferred to the USSR Under Project Hula [other_primary]
- Locator
- Appendix table, printed pp. 39-40 / PDF p. 44, SC 646 row
- Finding type
- vessel_history
- Finding
- The Project Hula appendix lists SC 646 with Soviet designation BO-310(?) and transfer date 26 May 1945 (shown by a ditto mark in the table); its disposition column records '1956-destroyed.' The Soviet designation is explicitly uncertain in the source, and the source does not specify a destruction location or method.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1956
- Limitations
- Navy-authored Naval Historical Center publication accessed as a live mirror at ibiblio because Firecrawl was quota-blocked. The table marks the Soviet designation BO-310 as uncertain; do not state it as definitive. 'Destroyed' does not establish a sinking, location, or precise date in 1956.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-646-sc646-02
-
[4]Archived Naval History and Heritage Command, DANFS, SC-401–SC-500, SC-497 Class Characteristics and Class Grouping (Wayback capture 2022-12-27) [nhhc_danfs]
- Locator
- Class Grouping and SC-497 Class Characteristics sections
- Finding type
- historical_record
- Finding
- NHHC's class grouping places SC numbers 628-775 in the SC-497 class and gives class characteristics of two diesel engines (1,540 or 800 hp.) and two screws. NHHC notes that production variations existed; these figures describe the class, not a verified installation aboard SC-646.
- Verification
- partial
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- World War II era
- Limitations
- The current NHHC DANFS page returned HTTP 404 on direct fetch. The archived copy was retrieved and checked live on 2026-10-03; it is labeled as an archived citation. Class-level specifications only; no ship-specific engine rating or asbestos-containing material is established.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-646-sc646-03
-
[5]National Archives and Records Administration, Special List 44: List of U.S. Navy Deck Logs, arranged by ship number [other_primary]
- Locator
- Special List 44, SC-646 row
- Finding type
- historical_record
- Finding
- NARA's ship-number deck-log list includes SC-646 and gives a listed log coverage period from 5 August 1942 through 31 March 1945. The underlying deck logs were not inspected in this research.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-08-05 to 1945-03-31
- Limitations
- An archival inventory entry only; it does not establish the ship's movements or events on any particular date and contains no asbestos information. The listed log coverage ends before the 26 May 1945 transfer date.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-646-sc646-04
-
[6]Research search ledger sl-uss-sc-646-sc646-01 through sl-uss-sc-646-sc646-10 [other_primary]
- Locator
- Search ledger rows sl-uss-sc-646-sc646-01 through sl-uss-sc-646-sc646-10
- Finding type
- litigation_documented
- Finding
- No qualifying asbestos-litigation record naming USS SC-646 was verified. Three of the four required authenticated CourtListener base-query attempts did not yield usable search results; the hull-number docket query was not run after the helper reported the fleet-wide request pace was spent. This is an incomplete search result, not evidence that no such litigation exists.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Limitations
- The result is limited to the logged searches. Exact-name opinion and docket helper calls emitted only request-start notices without result payloads; the hull-number opinion call returned a fleet-wide pacing stand-down. The fourth base query remains unrun. No asbestos-qualified variants were run because no base query produced a confirmed 20-result overflow. Firecrawl search/scrape was unavailable due a keyless quota exhaustion response.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-646-sc646-05
-
[7]Research search ledger sl-uss-sc-646-sc646-05, sl-uss-sc-646-sc646-09, and the accessible ship-specific sources reviewed in sl-uss-sc-646-sc646-06 through -08 [other_primary]
- Locator
- Search ledger rows sl-uss-sc-646-sc646-05 through -09; see accessible source rows sl-uss-sc-646-sc646-06 through -08
- Finding type
- asbestos_application
- Finding
- No ship-specific asbestos survey, abatement record, hazardous-material disclosure, material inventory, or qualifying asbestos-litigation record was verified in the accessible sources reviewed for this run. Asbestos presence aboard USS SC-646 remains unknown; this is a bounded research result, not proof of absence.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03 research
- Limitations
- The dedicated Firecrawl search was blocked by keyless quota exhaustion, and the CourtListener litigation sweep was incomplete after the helper's fleet-wide pacing stand-down. The accessible DANFS, Project Hula, and NARA sources reviewed do not characterize asbestos aboard this vessel. No class, era, construction, or propulsion inference was used to establish asbestos presence.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-646-sc646-06