Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
-
[1]research packet 1112-packet.md (2 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-ensenore-yt217-pkt-1112-packet-md
-
[2]Naval History and Heritage Command, Dictionary of American Naval Fighting Ships, Ensenore (YTB-217). [nhhc_danfs]
- Locator
- DANFS entry, complete text (NHHC live-search result); direct retrieval returned HTTP 404 on this date.
- Finding type
- vessel_history
- Finding
- DANFS identifies Ensenore (YTB-217) as an American Indian chief of the Secotan tribe and states that the tug served in a noncommissioned status in the First Naval District from 1944 through 1962.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1944-1962
- Limitations
- Establishes the documented operational designation and service span only. It does not state construction details, machinery, asbestos content, individual exposure, causation, or disposition after 1962.
- Atlas source
- true
- Evidence ID
- ev-uss-ensenore-yt217-01
-
[3]Bureau of Ships, Ships' Data, U.S. Naval Vessels, NAVSHIPS 250-012, vol. III (1945), printed p. 580. [other_primary]
- Locator
- PDF p. 599 / printed p. 580, 'HARBOR TUGS, BIG (YTB)' table, YTB217 ENSENORE row.
- Finding type
- vessel_history
- Finding
- The contemporaneous Bureau of Ships data book lists ENSENORE as YTB-217, a big harbor tug, with length 110 ft, breadth 27 ft, draft 11 ft 4 in, 1,000 horsepower, First Naval District allocation, W. A. Robinson, Inc. of Ipswich, Massachusetts as builder, wood construction, and former designation YT-217.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1945
- Limitations
- Contemporaneous official characteristics/allocation snapshot hosted as a live scan; it does not give a build date beyond the 1945 snapshot and contains no asbestos, insulation, complement, or later-disposition information.
- Atlas source
- true
- Evidence ID
- ev-uss-ensenore-yt217-02
-
[4]Occupational Safety and Health Administration, Occupational Exposure to Asbestos, 59 Fed. Reg. 40964 (Aug. 10, 1994). [federal_register]
- Locator
- Federal Register preamble, 'Shipbuilding and repairing -- historical contact with asbestos in shipyard work,' HTML lines 1749-1755.
- Finding type
- asbestos_application
- Finding
- OSHA's 1994 shipyard asbestos rulemaking states that asbestos products were used extensively on American ships from the early 1940s through the late 1970s, including insulation for steam and hot-water pipes, boilers, and tanks in machinery spaces; it also describes potential exposure during removal, repair, and installation of such components.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- early 1940s-late 1970s; rulemaking 1994
- Population
- U.S. shipbuilding and shipyard-repair workers (general context)
- Limitations
- General American-ship/shipyard era documentation, not a survey or material list for this wood harbor tug. It does not establish that Ensenore had boilers, steam piping, any listed product, asbestos aboard, individual exposure, causation, quantity, or present condition.
- Atlas source
- true
- Evidence ID
- ev-uss-ensenore-yt217-03
-
[5]Batch-9325 search ledger (this record): NHHC DANFS, Bureau of Ships Ships' Data, NARA asbestos-research guide, and OSHA rulemaking. [other_primary]
- Locator
- search_ledger rows sl-uss-ensenore-yt217-01 through sl-uss-ensenore-yt217-05.
- Finding type
- historical_record
- Finding
- No ship-specific asbestos documentation was located in the retrieved DANFS history, the 1945 Bureau of Ships data-book row, or the official sources searched: none is an asbestos survey, abatement record, material list, or hull-specific engineering drawing.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 2026-10-05 research
- Limitations
- A negative result from the sources retrieved is not proof that asbestos was absent. CourtListener's four required base searches were not completed because the authenticated shared pacing helper did not acquire a token; this row makes no litigation-negative finding.
- Atlas source
- true
- Evidence ID
- ev-uss-ensenore-yt217-04
-
[6]National Archives, Researching Asbestos aboard U.S. Naval Vessel up through 1961. [other_primary]
- Locator
- NARA guide, 'Beginning Research,' 'General Information Books,' and 'Cartographic Branch' sections (S39/S48; RG 19).
- Finding type
- historical_record
- Finding
- NARA identifies RG 19 Bureau of Ships correspondence, specifications, ship information books, and ship engineering drawings as potential sources for vessel-specific asbestos research; the drawing files include S39 (Insulation and Lagging) and S48 (Piping) material groups and are arranged by hull number.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-05
- Study period
- 1940-1962 records guidance
- Limitations
- Repository guidance only; no Ensenore/YT-217 file, drawing, or box was retrieved. The guide does not establish that any asbestos-related document exists for this hull or that asbestos was aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-ensenore-yt217-05