Evidence
5 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-5).
-
[1]research packet 1112-packet.md (4 sources cited) [museum_official]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-iwana-yt2-pkt-1112-packet-md
-
[2]U.S. Navy, Navy Filing Manual (1941), p. 290, District Tugs table (NARA-hosted PDF) [other_primary]
- Locator
- PDF p. 290 / printed table: 'YT2 Iwana'
- Finding type
- historical_record
- Finding
- The Navy Filing Manual (1941), a National Archives-hosted Navy publication, lists Iwana as YT2 in its District Tugs table. This is an identity control distinguishing this hull from the later YT-272.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941
- Limitations
- This is an identity and designation record, not a materials record. It does not establish construction details, asbestos presence, individual exposure, causation, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-iwana-yt2-01
-
[3]U.S. Navy, Ships' Data, U.S. Naval Vessels, vol. 3 (1945), printed p. 595, Harbor Tugs, Medium (YTM), and stricken-vessels table (digitized Navy publication) [other_primary]
- Locator
- PDF image p. 614 / printed p. 595, YTM2 row; PDF text p. 642, stricken-vessels table, YTM2
- Finding type
- vessel_history
- Finding
- The Navy's 1945 Ships' Data volume lists YTM-2 as a medium harbor tug: 96 ft overall, 21 ft beam, 8 ft 6 in draft, 450 shp, built by City Point Iron Works, Boston, under authorization of 2 March 1889; remarks identify it as ex-YT-2 with a 12½ x 20 x 32 in, 24-in-stroke single-ended coal-burning steam engine. Its stricken-vessels table records YTM-2 as stricken 28 April 1945.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1945
- Population
- Navy personnel and Boston-area harbor-tug workforce; no exposure population is documented by this source.
- Limitations
- This Navy technical table verifies hull identity, machinery, and a 1945 status entry; it does not identify insulation or any asbestos-containing product, establish present material condition, individual exposure, causation, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-iwana-yt2-02
-
[4]Research search ledger, rows sl-uss-iwana-yt2-01 through sl-uss-iwana-yt2-05 [other_primary]
- Locator
- Search ledger in this record; Navy sources and NARA were searched by hull and name
- Finding type
- asbestos_application
- Finding
- No qualifying public ship-specific asbestos documentation was located for USS Iwana (YT-2/YTM-2): the searched Navy historical entries, National Archives Navy Filing Manual, Navy Ships' Data table, NavSource archival page, NARA guide/holding pages, and accessible web-index results did not provide a hull survey, abatement record, asbestos product identification, environmental record, or qualifying asbestos case.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 2026-10-05
- Limitations
- A negative search result is not proof that asbestos was absent from this 1891-built steam tug. It does not establish presence, absence, quantity, present condition, individual exposure, causation, or legal eligibility; its scope is the public sources and queries recorded in the ledger.
- Atlas source
- true
- Evidence ID
- ev-uss-iwana-yt2-03
-
[5]NHHC ZC Files - I index; National Archives at Boston holdings page [other_primary]
- Locator
- NHHC index search result for Iwana (YTM-2); NARA Boston page, 'Highlights from Our Holdings'
- Finding type
- historical_record
- Finding
- Archival lead only: NHHC's ZC-files index lists Iwana (YTM-2), 1892-1942, with a data sheet and a liberty-pass card; NARA Boston states that it holds Navy and Marine Corps records for the New England region. These repositories may hold hull-specific history or maintenance material, but no item was retrieved or reviewed in this batch.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-10-05
- Study period
- 1892-1945 records
- Limitations
- Repository and index information only. The NHHC index URL was live in the web index but returned HTTP 404 on direct verification this session; no data sheet, liberty-pass card, maintenance file, or asbestos-specific record was retrieved. This is not an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-iwana-yt2-04