Evidence
4 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-4).
-
[1]Department of the Navy, Naval Vessel Register, NAVSHIPS 18-1-11, 1 January 1949 [other_primary]
- Locator
- Printed p. 236, YTB-512 HASTWIANA row (PDF p. 237)
- Finding type
- vessel_history
- Finding
- The 1 January 1949 Naval Vessel Register lists HASTWIANA, YTB-512, with vessel status ACT and status code 1.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- The register establishes active Navy status at this snapshot only. It does not document commissioning, station, crew, machinery, or asbestos aboard the vessel.
- Atlas source
- true
- Evidence ID
- ev-uss-hastwiana-ytb512-01
-
[2]Naval Sea Systems Command, Ship History, 28 June 2011 [other_primary]
- Locator
- Printed p. 106, YTM 0775 HASTWIANA row
- Finding type
- vessel_history
- Finding
- A NAVSEA inactive-ship history list records HASTWIANA as YTM-775, removal date 24 October 1975, final disposition category SCRAP SALE.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- The Navy PDF's indexed text was accessible, but direct PDF download returned HTTP 403; row was checked against the indexed excerpt. The same unusual name links the YTB-512 and YTM-775 entries, but a primary crosswalk and redesignation date were not located. 'SCRAP SALE' is a listed disposition category, not proof of completed scrapping.
- Atlas source
- true
- Evidence ID
- ev-uss-hastwiana-ytb512-02
-
[3]U.S. Government Accountability Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (1979) [gao]
- Locator
- Report discussion of shipboard thermal asbestos and replacement policy; GAO product page https://www.gao.gov/products/hrd-80-2
- Finding type
- asbestos_application
- Finding
- A 1979 GAO review states that Navy policy required replacing asbestos insulation with substitute materials when insulated shipboard equipment and machinery were repaired; it discusses thermal asbestos insulation on naval vessels at fleet-program level.
- Verification
- partial
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-24
- Limitations
- Fleet-level evidence, published after the Navy's recorded 1975 removal of Hastwiana. GAO examined Long Beach and Norfolk naval shipyards and does not name this tug or its class. It cannot establish that any asbestos was installed or disturbed aboard this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-hastwiana-ytb512-03
-
[4]Batch 9429 source-search ledger and authenticated CourtListener API v4 searches [other_primary]
- Locator
- search_ledger rows sl-uss-hastwiana-ytb512-01 through sl-uss-hastwiana-ytb512-08
- Finding type
- historical_record
- Finding
- No qualifying public hull-specific asbestos documentation or indexed CourtListener opinion was located in the sources searched on 24 September 2026.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- A negative search result is limited to the repositories and queries recorded below; it does not prove absence of asbestos or litigation outside the searched indexes. The hull-number docket query remained pending at time of drafting.
- Atlas source
- true
- Evidence ID
- ev-uss-hastwiana-ytb512-04