Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
-
[1]Naval History and Heritage Command, United States Pacific Fleet Organization, 1 May 1945 [other_primary]
- Locator
- Service Force listing, YTB 381
- Finding type
- vessel_history
- Finding
- The Navy's 1 May 1945 Pacific Fleet organization lists YTB-381, without a vessel name, among large harbor tugs.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1945-05-01
- Limitations
- The roster identifies the hull number but leaves the name blank. It establishes presence in the Navy roster by this date, not original entry in 1944, assignment history, asbestos content, or an individual crew member.
- Atlas source
- true
- Evidence ID
- ev-uss-chepanoc-yt381-01
-
[2]Naval History and Heritage Command, Thresher II (SSN-593) ship history [nhhc_danfs]
- Locator
- 5 and 7 September 1961, Gould Island torpedo-range passages
- Finding type
- vessel_history
- Finding
- NHHC's history of Thresher identifies Chepanoc as YTB-381 and records the tug assisting the submarine at the Gould Island torpedo range in September 1961.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1961-09
- Limitations
- Documents a discrete operational event, not the tug's complete service chronology, the asserted 1957 return date, crew, materials, asbestos, or exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-chepanoc-yt381-02
-
[3]Naval History and Heritage Command, K-101613 Newport, R.I. Navy Base, National Archives photograph catalog [other_primary]
- Locator
- Caption, August 1973, Pier Three
- Finding type
- vessel_history
- Finding
- An NHHC catalog entry for National Archives photograph K-101613 identifies Chepanoc as YTM-381 among ships at Pier Three, Newport, Rhode Island, in August 1973.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1973-08
- Limitations
- The caption corroborates the YTM-381 designation and location at a point in time. It gives no redesignation date, material inventory, asbestos finding, or later disposition.
- Atlas source
- true
- Evidence ID
- ev-uss-chepanoc-yt381-03
-
[4]Naval Sea Systems Command, Ship History, 28 June 2011 [other_primary]
- Locator
- p. 101, YTB 0381 CHEPANOC row
- Finding type
- vessel_history
- Finding
- NAVSEA's inactive-ship history identifies CHEPANOC as YTB 0381; its removal-date cell is blank and the final-disposition cell reads UNK.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 2011 compilation
- Limitations
- This Navy table does not establish a striking date or final disposition. Its YTB designation may reflect an earlier registry designation rather than the YTM marking used in the 1973 photo caption; the sources do not explain the difference.
- Atlas source
- true
- Evidence ID
- ev-uss-chepanoc-yt381-04
-
[5]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2, reproducing Navy letters of 5 January and 8 February 1979 [gao]
- Locator
- Enclosure I pp. 10-12; Enclosure II p. 22, YTB class line
- Finding type
- asbestos_application
- Finding
- In a 1979 response to GAO, the Navy described asbestos-containing materials in shipboard thermal insulation and other applications and included large harbor tugs (YTB) in its class list and thermal-insulation estimates.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-24
- Study period
- 1979
- Population
- Navy ship and shipyard personnel generally
- Limitations
- The class figures concern Navy classes considered in 1979, not this 1940s hull; the report does not name Chepanoc or YTB-381. No product, quantity, location, exposure, or causation is established for this vessel. The YTB weight estimate is deliberately not attributed to Chepanoc.
- Atlas source
- true
- Evidence ID
- ev-uss-chepanoc-yt381-05
-
[6]Batch 9364 search ledger and authenticated CourtListener helper diagnostic, 24 September 2026 [other_primary]
- Locator
- search_ledger rows sl-uss-chepanoc-yt381-01 through sl-uss-chepanoc-yt381-07
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, material specification, abatement record, or qualifying asbestos litigation record for Chepanoc has been verified in the sources and searches recorded here. CourtListener's required authenticated search remains incomplete because the shared pacing limiter denied requests before transmission.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 2026-09-24
- Limitations
- A bounded search failure, not proof that asbestos was absent. The litigation search cannot be classified as no result until authenticated CourtListener name and hull queries complete. No individual exposure or legal conclusion follows.
- Atlas source
- true
- Evidence ID
- ev-uss-chepanoc-yt381-06
-
[7]National Archives, Researching Asbestos aboard US Naval Vessel up through 1961 [other_primary]
- Locator
- Beginning Research; paper Ship Engineering Drawings, S39 and S48
- Finding type
- historical_record
- Finding
- NARA's guide directs researchers of Navy ship asbestos questions to Bureau of Ships Record Group 19, including S39 insulation and lagging drawings and S48 piping drawings; no Chepanoc drawing or contract file was retrieved for this batch.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-24
- Study period
- 1940s-1960s records
- Limitations
- Repository and series guidance only. The guide does not identify a Chepanoc file or prove that any drawing for this hull contains asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-chepanoc-yt381-07
-
[8]Florida Fish and Wildlife Conservation Commission, State of Florida Artificial Reef Locations, deployment OK0105 [other_primary]
- Locator
- Okaloosa County, OK0105, Chepanoc - Starfish Reef
- Finding type
- historical_record
- Finding
- Florida's reef deployment inventory lists a 129-foot tug named Chepanoc sunk at Starfish Reef on 1 December 2005, but gives no Navy hull number or ownership history linking it to YT/YTB/YTM-381.
- Verification
- verified
- Role
- correction
- Documentation level
- context_only
- Accessed
- 2026-09-24
- Study period
- 2005-12-01
- Limitations
- This row records an unresolved same-name vessel lead, not the fate or current location of Navy hull 381. The reef inventory does not supply a hull identifier or chain of title; the two vessels must not be merged on name alone.
- Atlas source
- true
- Evidence ID
- ev-uss-chepanoc-yt381-08