Evidence
5 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-5).
-
[1]U.S. Navy Bureau of Ships, Naval Vessel Register, 1 January 1949 (NAVSHIPS 18-1-11), scanned copy hosted by General Staff [other_primary]
- Locator
- printed p. 236, PDF p. 237, YTB-500 row (visually checked against scan)
- Finding type
- vessel_history
- Finding
- The U.S. Navy's 1 January 1949 Naval Vessel Register lists CHOHONAGA as YTB-500 among service craft and gives vessel status ACT with status code 1.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1949-01-01
- Limitations
- The register establishes identity and active Navy status at this snapshot. It contains no asbestos finding for this craft and does not establish commissioning, later service, crew complement, or material inventory.
- Atlas source
- true
- Evidence ID
- ev-uss-chohonaga-ytb500-01
-
[2]Naval History and Heritage Command, Dictionary of American Naval Fighting Ships, 'Liberty III (AGTR-5)' [nhhc_danfs]
- Locator
- indexed text: 15 June 1965 departure and 24 March 1966 Norfolk movement; live page returned 404/502
- Finding type
- vessel_history
- Finding
- NHHC's history of Liberty (AGTR-5) names Chohonaga (YTB-500) and Paducah (YTB-758) as harbor tugs assisting Liberty out of Hampton Roads on 15 June 1965. It also names Chohonaga and Chiquito (YTB-499) as moving Liberty from its Norfolk pier on 24 March 1966.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1965-1966
- Limitations
- The official page's search-index text names the hull, but the live page could not be opened during this pass. These are discrete harbor-assistance events, not a full duty-station history. The account gives no machinery or asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-chohonaga-ytb500-02
-
[3]Naval Sea Systems Command, Ship History, 28 June 2011 [other_primary]
- Locator
- p. 106, row 'YTM 0766 | CHOHONAGA | 21-Jul-76 | SCRAP SALE' in official PDF search-index text; direct PDF fetch returned 403
- Finding type
- vessel_history
- Finding
- A NAVSEA ship-history table lists hull ID YTM 0766 as CHOHONAGA, with removal date 21 July 1976 and final disposition code 'SCRAP SALE'.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 1976
- Limitations
- The official PDF was indexed but blocked to direct retrieval. 'SCRAP SALE' is a Navy disposition code, not proof of demolition or the vessel's present physical condition. The table does not supply the date of reclassification from YTB-500, a decommissioning date, or asbestos data.
- Atlas source
- true
- Evidence ID
- ev-uss-chohonaga-ytb500-03
-
[4]National Archives and Records Administration, Ship Plan Index [other_primary]
- Locator
- CHOHONAGA / YTB-500 / RG 19 / Microfilm / NAID 175668689
- Finding type
- historical_record
- Finding
- NARA's Ship Plan Index lists CHOHONAGA, YTB-500, in Record Group 19, Microfilm series, National Archives Identifier 175668689. These plans are a potential lead for hull construction and machinery details; their content was not retrieved.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- The index proves an archival file-unit listing, not the content of the microfilm. No drawing or specification was examined, and no asbestos or propulsion inference is drawn from it.
- Atlas source
- true
- Evidence ID
- ev-uss-chohonaga-ytb500-04
-
[5]Batch 9421 source review and search ledger in this record [other_primary]
- Locator
- search_ledger rows sl-uss-chohonaga-ytb500-01 through -11
- Finding type
- historical_record
- Finding
- No hull-specific asbestos document was located in the 1949 register row, NHHC Liberty history excerpt, NAVSEA disposition-table excerpt, or NARA Ship Plan Index. Authenticated CourtListener API v4 searches of opinions and dockets for the exact name Chohonaga, original hull number YTB-500, and later designation YTM-766 each returned zero results.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Study period
- 2026-09-24
- Limitations
- This is a bounded negative search result, not proof that asbestos was absent or that no unindexed litigation exists. Neither material inventory nor exposure, dose, causation, or legal eligibility can be determined from these sources. CourtListener no-result findings describe its indexed opinions and dockets as queried on 2026-09-24.
- Atlas source
- true
- Evidence ID
- ev-uss-chohonaga-ytb500-05