Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
-
[1]research packet 981-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-carson-city-pf50-pkt-981-packet-md
-
[2]DANFS, Carson City (PF-50), Vol. II p. 42 (live NHHC page, published 2021-09-30) [nhhc_danfs]
- Locator
- NHHC DANFS page, Carson City (PF-50), specifications block + service narrative
- Finding type
- vessel_history
- Finding
- DANFS record for this hull: launched 13 November 1943 by Consolidated Steel Corp., Wilmington, Calif., under a Maritime Commission contract; sponsored by Mrs. C. B. Austin; commissioned 24 March 1944, Commander H. B. Roberts, USCG, in command. Sailed from Los Angeles 19 July 1944; patrol and escort duty New Guinea area with the 7th Fleet from 13 August; Morotai landings 16 September; Leyte Gulf reinforcement convoy from Humboldt Bay 16 October, landing area 22 October; New Guinea convoy escort until 26 November 1944; Pearl Harbor overhaul; Alaskan Sea Frontier at Dutch Harbor from 12 January 1945. Transferred at Cold Bay to Russia under lend-lease 29 August [1945]; returned at Yokosuka 31 October 1949, decommissioned and placed in reserve the same day; loaned to Japan 30 April 1953 as Sakura. Two battle stars for World War II. Specifications: dp. 1,430; l. 303'11"; b. 37'6"; dr. 13'8"; s. 19 k.; cpl. 180; a. 3 3"; cl. Tacoma.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1971
- Population
- Consolidated Steel construction trades 1943; USCG-manned crew (design complement 180-190); Soviet crew 1945-49; JMSDF crew 1953-71
- Limitations
- DANFS documents identity, builder, and service history - not materials or asbestos content. The entry ends in 1953 ('now serves as Sakura'), so JMSDF career, striking, and disposal are absent from this source; Soviet designation not stated. Carries no laid-down date.
- Atlas source
- true
- Evidence ID
- ev-uss-carson-city-pf50-01
-
[3]U.S. Coast Guard Historian's Office, 'USS Carson City, PF-50' asset page (history.uscg.mil, posted 2021-03-26) [other_primary]
- Locator
- USCG Historian's Office asset page, specifications block + History section
- Finding type
- vessel_history
- Finding
- Official USCG Historian's Office record for this hull: builder Consolidated Steel Corp., Wilmington, CA; propulsion '2-shaft VTE, 3 boilers'; complement 190; top speed 20 knots; commissioned 24 March 1944 under CDR H. B. Roberts, USCG; the same DANFS-consistent service narrative (New Guinea, Morotai, Leyte, Pearl Harbor overhaul, Dutch Harbor 12 January 1945); 'transferred at Cold Bay to the Soviet Navy under lend-lease' on 29 August 1945; 'The Soviet Navy commissioned her as EK-20'; returned at Yokosuka 31 October 1949; loaned to Japan 30 April 1953, served as Sakura. Sources cited by the Historian: The Coast Guard At War Vol. V; Conway's 1922-1946 pp. 148-149; DANFS Vol. II p. 42; Russell, Project Hula (Naval Historical Center, 1997), pp. 39-40.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1971
- Population
- USCG crew 1944-45; Consolidated Steel construction trades 1943
- Limitations
- Confirms Coast Guard manning (this hull was USCG-crewed in U.S. service, per class policy) and resolves the Soviet designation as EK-20 against divergent secondary sources. Documents service history and propulsion, not materials or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-carson-city-pf50-02
-
[4]Wayne Scarpaci, 'USS Carson City: Ship of Three Flags,' Naval History (U.S. Naval Institute), December 2022 [reputable_press]
- Locator
- USNI Naval History Dec 2022, article sections 'Operation Tradewind,' 'October 1944,' 'Soviet Service,' 'The Sakura,' 'The Tacoma-Class'
- Finding type
- vessel_history
- Finding
- USNI Naval History feature for this hull: commissioned at Terminal Island, California, 24 March 1944; sailed from Long Beach Naval Shipyard 19 July 1944; Operation Tradewind Morotai landings; PT-boat convoy escort with sisters Burlington (PF-51) and San Pedro (PF-37) - 47 3-inch rounds, three enemy planes assisted downed; late-October hedgehog/depth-charge attack on a sonar contact; Pearl Harbor overhaul (repainted Measure 21); Alaskan Sea Frontier from 12 January 1945. Decommissioned and transferred at Cold Bay 29 August 1945 under Project Hula with 27 other Tacoma-class frigates (Soviet name given as 'EK-22' in this account - carried as a source defect in gaps). Returned at Yokosuka 31 October 1949 'in very poor material condition.' Loaned to JMSDF 30 April 1953, renamed Sakura (PF290); YAC-16 from 31 March 1966; stricken from the JMSDF 31 March 1971; returned to U.S. custody at Yokosuka, stricken from the U.S. vessel register, transferred to DOD Surplus Property, sold for scrapping; hulk towed to Chien Ho Fa Steel and Iron Works, Taiwan, and broken up in 1972. Class context: the Navy did not crew any Tacoma-class ship in WWII, assigning them to the Coast Guard; built to merchant-ship standards for production-line assembly in civilian yards.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1972
- Population
- USCG crew 1944-45; Soviet crew 1945-49; JMSDF crew 1953-71; Taiwan scrapping workers 1972
- Limitations
- Reputable secondary (USNI Naval History), not a primary record - used to fill the post-1953 gap DANFS leaves. Its 'EK-22' conflicts with the USCG Historian's EK-20 and the class roster (EK-22 was Gallup, PF-47); scrapping attribution rests on this single source. No materials or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-carson-city-pf50-03
-
[5]NavSource Naval History, Frigate Photo Archive: Carson City (PF 50), ex-PG-158 [other_primary]
- Locator
- navsource.net/archives/12/08050.htm - chronology block, specifications, commanding-officer table
- Finding type
- historical_record
- Finding
- NavSource timeline and photo archive for this hull: MC type T. S2-S2-AQ1; originally authorized as patrol gunboat PG-158, reclassified patrol frigate PF-50 15 April 1943; laid down 28 September 1943 under Maritime Commission contract at Consolidated Steel Corp., Ltd., Wilmington, CA; launched 13 November 1943; commissioned 24 March 1944; decommissioned 29 August 1945 ('Cold Harbor' [sic - Cold Bay], Alaska); Lend-Lease transfer to Soviet Union dated 30 August 1945, reclassified EK-20; Soviet Pacific Fleet 5 September 1945; returned to U.S. custody Yokosuka 31 October 1949; Pacific Reserve Fleet; loaned to JMSDF 30 April 1953, renamed Sakura (PF 290); reclassified Auxiliary Stock Craft YAC-16 31 March 1966; decommissioned 31 March 1971; returned to U.S. custody 6 August 1971; 'fate unknown.' Specifications: displacement 1,430 t.; 20.3 kts; complement 190; two 3-drum express boilers, two 5,500 ihp J. Hendy Iron Works engines, two shafts. Commanding officers (all USCG/USCGR): CDR H. B. Roberts (24 Mar 1944 - 18 Dec 1944), LT R. L. Barbee (18 Dec 1944 - 1945), LT T. B. Taylor (1945 - 26 Aug 1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1971
- Population
- USCG crew 1944-45
- Limitations
- NavSource is a volunteer naval-history archive, not a .mil record - used for the laid-down date, PG-158 reclassification, CO list, and propulsion detail that DANFS omits. 'Cold Harbor' is a transcription error for Cold Bay; 'fate unknown' is superseded for disposal by the USNI account. No materials or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-carson-city-pf50-04
-
[6]USCG Historian's Office specifications block (2-shaft VTE, 3 boilers) + DANFS Maritime Commission contract note + USNI class history (merchant-standard construction in civilian yards) [other_primary]
- Locator
- USCG Historian specifications block; DANFS construction sentence; USNI 'The Tacoma-Class' section
- Finding type
- asbestos_application
- Finding
- Era/design inference: a steam vessel built 1943 under a U.S. Maritime Commission contract (MC type T. S2-S2-AQ1) with a three-boiler, two-shaft vertical triple-expansion plant would have carried period-standard asbestos applications - boiler and steam-drum insulation, steam-line lagging, valve and flange gaskets, machinery packing, fireproofing, and accommodation/deck insulation. The class was built to merchant-ship standards in civilian yards under the war-emergency program (USNI), the same construction era and steam configuration in which asbestos insulation was standard marine practice.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1943-1945
- Population
- Consolidated Steel construction trades 1943; USCG crew 1944-45
- Limitations
- Class/era and builder inference only - no source names this hull's materials, and no ship-specific survey or abatement record was located (see ev-06). Does not establish asbestos aboard this specific hull, quantities, or crew-era exposure. Consolidated Steel Corp., Wilmington is not in the Atlas shipyards.json yard set - carried in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-carson-city-pf50-05
-
[7]NHHC photographic catalog, 26-G-4810: 'USS Carson City (PF-50). In the Aleutians, circa 1944-45' (National Archives) [other_primary]
- Locator
- NHHC photo catalog page 26-G-4810 (Title, Caption, Catalog # fields)
- Finding type
- historical_record
- Finding
- NHHC/NARA photographic record placing this hull in the Aleutians circa 1944-45 (catalog 26-G-4810, 26-G series = USCG photography), corroborating the Alaskan Sea Frontier period. The same catalog series and NARA RG 24 deck logs are the archival leads for any hull-level maintenance or material documentation.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1945
- Limitations
- Photograph metadata only - documents the ship's presence in the Aleutians, not materials aboard. NARA RG 24 deck-log retrieval not performed; no digitized deck log or war diary for PF-50 was located in this session.
- Atlas source
- true
- Evidence ID
- ev-uss-carson-city-pf50-06
-
[8]Batch-8456 search ledger (this record): NHHC DANFS; USCG Historian's Office; USNI Naval History; NavSource; NVR; CourtListener base queries; asbestos-keyed web searches [other_primary]
- Locator
- search_ledger rows sl-uss-carson-city-pf50-01 through sl-uss-carson-city-pf50-09
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or ship-specific materials document was found in the public sources searched (see search_ledger). CourtListener ship-name litigation queries were blocked by the shared fleet pace window all session (sl-09) and remain unexecuted - litigation coverage is a logged gap, not a negative result. The hull was scrapped in Taiwan in 1972 (USNI); no abatement record for that breaking was located.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - the ship's era, Maritime Commission construction, and steam plant are consistent with period-standard asbestos materials. Does not establish that asbestos is or is not present, and establishes nothing about exposure or legal eligibility. Litigation coverage incomplete: CourtListener base queries blocked by fleet pacing (sl-09); web searches surfaced no qualifying case but are not a substitute for the docket index.
- Atlas source
- true
- Evidence ID
- ev-uss-carson-city-pf50-07