Evidence
12 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-12).
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[1]research packet 1098-packet.md (7 sources cited) [nhhc_danfs]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-tazha-yt147-pkt-1098-packet-md
-
[2]DANFS, Tazha (YT-147) 1941-1973 - construction, Fifth Naval District service at Norfolk, reclassifications, disposal, commercial afterlife (live NHHC page, updated Robert J. Cressman 29 April 2024) [nhhc_danfs]
- Locator
- DANFS service narrative and spec block (history.navy.mil/research/histories/ship-histories/danfs/t/tazha.html)
- Finding type
- vessel_history
- Finding
- Documented for this hull: 'Tazha (YT-147) was laid down on 8 August 1940 at Morris Heights, N.Y., by the Consolidated Shipbuilding Corp.; launched on Lincoln's birthday 1941; and completed and placed in service on 14 June 1941.' Served her entire Navy career at Norfolk, Va., in the Fifth Naval District as a harbor tug June 1941 - March 1946; reclassified harbor tug (big) YTB-147 on 15 May 1944; placed out of service in reserve March 1946; inactive at Norfolk until July 1952 when returned to active service; reclassified medium harbor tug YTM-147 February 1962; 'decommissioned, and her name stricken from the Naval Vessel Register, on 1 May 1973. She was disposed-of, by Navy Sale, on 1 May 1974.' Marine Logistics, Seattle, acquired the tug and renamed her Robert W. (1974); in 1987 Alaska Marine Towing, of Juneau, purchased her and renamed her Cold Bay. Spec block: displacement 218; length 100'0"; beam 25'0"; draft 9'7" (full load); speed 12 knots (trial); complement 12; class Woban. Name: a Sioux word meaning 'wave of the sea.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1940-1987 (entry coverage)
- Population
- Consolidated Shipbuilding construction trades (1940-41); tug crew, Fifth Naval District, Norfolk (1941-46, 1952-73)
- Limitations
- Ship-specific history only; no asbestos or material content. 'Launched on Lincoln's birthday 1941' resolved to 12 February 1941 by the Mystic Seaport launch-negative date (ev-04). 'Decommissioned' is applied loosely to an in-service district craft - see gaps. Live page verified via firecrawl 2026-10-05 (bare-curl requests to this CDN return 404; the page is live for normal clients).
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-01
-
[3]NavSource Online: Service Ship Photo Archive, Tazha (YTM-147) ex YTB-147 ex YT-147 - designation timeline, specifications, awards, DRMS disposal, commercial registry, Norfolk 1964 photo caption [other_primary]
- Locator
- NavSource 14/08147.htm header block, awards, timeline, specifications, and photo captions
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull (Woban Class District Harbor Tug; Consolidated Shipbuilding Corp., Morris Heights, NY, YN 3108): laid down 8 August 1940; launched 12 February 1941; placed in service as Tazha (YT-147) 14 June 1941; reclassified District Harbor Tug, Large, YTB-147, 15 May 1944; placed out of service in reserve at Norfolk March 1946; reactivated July 1952; reclassified District Harbor Tug, Medium, YTM-147, February 1962; placed out of service and struck from the Naval Register 1 May 1973; 'disposed of, sold by Defense Reutilization and Marketing Service (DRMS) for scrapping, May 1974'; registered to Marine Logistics, Seattle, WA, as tug Robert W. (ON 561695), 1974; sold to Alaska Marine Towing, Juneau, AK, and renamed Cold Bay, 1987; 'final disposition, no longer documented.' Specifications: displacement 218 tons (light) 325 (full load); length 100'; beam 25'; draft 11' (max); speed 12 kts; complement 12; armament unknown; propulsion diesel, single screw. Awards listed: American Defense Service Medal; American Campaign Medal; World War II Victory Medal; National Defense Service Medal (2). Photo caption places Tazha (YTM-147) at NOB Norfolk August 1964 assisting Thuban (AKA-19) getting underway. National Archives photos 19-N-24246 through 19-N-24249 document her newly completed off New York City 13 June 1941.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1940-1987
- Population
- Consolidated construction trades (1940-41); crew (1941-46, 1952-73); NOB Norfolk operating population (Aug 1964 caption); commercial crews 1974-87
- Limitations
- Volunteer secondary compilation, not a primary registry - milestone dates track DANFS. Spec conflicts with DANFS spec block (draft 11' max vs 9'7" full load; adds 325-ton full-load displacement; class table variants - see gaps). 'For scrapping' in the DRMS line conflicts with the same page's commercial-registry record - the tug was documented, not scrapped; carried as written. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-02
-
[4]NHHC photograph catalog, 19-N-24248 'USS TAZHA (YT-147)' - caption 'Off New York City, 13 June 1941,' National Archives original (19-N series, Bureau of Ships still pictures, NARA College Park) [other_primary]
- Locator
- NHHC photo catalog page 19-N-24248 (title, caption, catalog number, date fields); NavSource photo caption block
- Finding type
- historical_record
- Finding
- Official photo-catalog record for this hull: NHHC 19-N-24248, 'USS TAZHA (YT-147). Caption: Off New York City, 13 June 1941.' National Archives original, black-and-white photograph, original date 13 June 1941 (the day before she was placed in service). NavSource captions document the companion frames 19-N-24246, 19-N-24247, and 19-N-24249 from the same sequence, credited as National Archives photos.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-06-13
- Limitations
- Archival lead only: a trials/delivery-day photograph documents the hull's existence and appearance on 13 June 1941, not her work or materials. NHHC individual pages for 19-N-24246/-47/-49 returned 404 on 2026-10-05 - only -248 is individually cataloged online; the companion frames' existence is documented via NavSource captions, not independently verified at NARA (catalog is JS-rendered). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-03
-
[5]Mystic Seaport, Rosenfeld Collection, object record 1984.187.56435: 'TAZHA, YT-147, U.S. Navy Yard Tug, closeup of hull at launching, New York, 1941' (negative, Rosenfeld and Sons, Morris Heights NY, dated 1941-02-12) [museum_official]
- Locator
- Mystic Seaport objects module, record kv=279717 (object 1984.187.56435); related object kv=315605
- Finding type
- historical_record
- Finding
- Museum-archive record for this hull: the Rosenfeld Collection holds a launch-day negative, object 1984.187.56435, cataloged 'TAZHA, YT-147, U.S. Navy Yard Tug, closeup of hull at launching, New York, 1941,' photographer Rosenfeld and Sons, location Morris Heights, New York, dated 1941-02-12 - pinning DANFS's 'launched on Lincoln's birthday 1941' to the specific date 12 February 1941 and corroborating the Morris Heights construction site.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-02-12
- Limitations
- Confirms launch date and location only - a single photographic object record; no asbestos, material, or condition content. The collection also holds a related silver gelatin print (1984.187.56435.1).
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-04
-
[6]ShipbuildingHistory.com (Tim Colton), Consolidated Shipbuilding / Gas Engine & Power / Charles L. Seabury Co. yard list, Morris Heights NY - hull 3108 Tazha (YT 147), ON 561695 [other_primary]
- Locator
- shipbuildinghistory.com consolidated.htm, production table rows 3106-3109
- Finding type
- vessel_history
- Finding
- Yard-list record for this hull: Consolidated Shipbuilding yard number 3108, U.S. official number 561695, Tazha (YT 147), US Navy tug, completed 14-Jun-41 - and disposition line 'Sold 1974 as Robert W, then Cold Bay, sank in Mexico 1987.' The same list documents her three same-yard Woban-class sisters as consecutive hulls: 3106 Montezuma (YT-145), 3107 Hoga (YT-146, Pearl Harbor survivor, later fireboat City of Oakland and museum ship at Little Rock), and 3109 Wenonah (YT-148, ON 565868, sold 1975, sank 2009).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1941-1987
- Population
- Commercial crews 1974-87 (if disposition accurate)
- Limitations
- Secondary reference compilation (industry-standard shipyard list, not a registry record) - the 'sank in Mexico 1987' disposition is an unverified secondary claim that NavSource leaves 'no longer documented'; carried here as a disposition lead, not an established fact, and flagged in gaps. The list's tonnage figure for Tazha (137) differs from DANFS displacement (218) - likely net tonnage vs displacement; see gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-05
-
[7]National Park Service, National Register/NHL nomination for City of Oakland, ex-Hoga (YTB-146) - class-level construction and machinery description for a same-builder Woban-class sister (yard no. 3107) [nps]
- Locator
- NPS nomination PDF, sections 7 (description) and 8 (significance); machinery paragraph at section 7
- Finding type
- historical_record
- Finding
- Class documentation through a same-yard sister: the NHL nomination describes Hoga (YT-146) - built by Consolidated Shipbuilding Corp. at Morris Heights, one yard number (3107) before Tazha (3108) - as 'a typical US Navy yard tug of the period': welded steel construction, 99.7 ft length overall, 25.6-ft breadth, 10.6-ft draft, 350 tons displacement; diesel-electric powered with 'twin Diesel 650-hp McIntosh and Seymour engines' driving 'twin 515-hp Westinghouse electric motors' through a common reduction gear to a single screw at 160 rpm, plus two original 410-kw DC generators; 'the arrangement of machinery reflects a common engineering technique for a Diesel-electric tugboat of the period.' Nomination also documents that 'like other YTs, she carried firefighting equipment.'
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1940-1941 (construction-era description)
- Population
- Woban-class construction trades and tug crews (class context)
- Limitations
- Class-level documentation via the nominated sister hull, not this hull: Hoga's recorded dimensions and machinery are class context for Tazha (NavSource gives Tazha 'diesel, single screw' only - the diesel-electric drive and specific engine model are not ship-specifically verified for YT-147). Hoga figures (350 t, 99.7 ft) differ from Tazha's DANFS spec block - see gaps. The nomination contains no asbestos or insulation-material statement.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-06
-
[8]Shipscribe, 'Harbor Tugs (YT): Photo Gallery, Large Types 1922-1945 (later YTB and YTM)' - class table sourced to the Navy's 1949 Ships Data Book NAVSHIPS 250-641 and ship-contract data [other_primary]
- Locator
- shipscribe YT119-p.html class-list table (row 'a', YT-138 Woban) and reclassification note
- Finding type
- historical_record
- Finding
- Class-table documentation for this hull's class: the YT-138 (Woban) class - first order 7 July 1938; class-table figures L-oa 100, B-ext 26, D-nav 10, T-std 237, T-full 345 - comprising YT 138-142, 145-151, 177-182, 188-191, and 195 (YT-147 is in the Woban class per this table and the DANFS spec block). Program-level context for her reclassifications: 'On 15 May 1944 all of the above still in service were reclassified from YT (Harbor Tug) to YTB (Harbor Tug Big) except for the early YT 119, 128, 129, 133, and 134 which were reclassified YTM... Most surviving World War II YTBs were downgraded to YTM in February 1962.'
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1938-1962 (class/reclassification window)
- Population
- Woban-class crews and district-craft populations (class context)
- Limitations
- Class-level table and program-level reclassification context, not a hull record - Tazha is not individually named on the page; her YT-147 -> YTB-147 (15 May 1944) and YTB -> YTM (Feb 1962) changes are ship-specifically documented by DANFS/NavSource and merely explained by this table. Class-table figures differ from Tazha's DANFS spec block - see gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-07
-
[9]Era inference built on: DANFS spec block and service narrative (diesel-electric-era Woban-class harbor tug, built 1940-41); NavSource specifications (diesel, single screw); NPS NHL nomination for sister Hoga (diesel-electric plant description, class context); GAO HRD-80-2 Navy asbestos-era documentation (ev-09) [other_primary]
- Locator
- DANFS spec block; NavSource specifications; NPS Hoga nomination machinery paragraph
- Finding type
- asbestos_application
- Finding
- A diesel-electric district harbor tug built 1940-41 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a yard tug of this type and period were engine and exhaust lagging, gaskets, valve packing, and electrical insulation around the diesel generator sets, the propulsion motor, and the switchboard, within the small, poorly ventilated machinery space of a 100-foot tug. As a diesel-electric craft she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1940-1987
- Population
- Consolidated construction trades (1940-41); tug crew in the machinery space (1941-46, 1952-73); any Norfolk maintenance trades during availabilities; 1974 commercial-refit and later crews
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for YT-147. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-08
-
[10]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (full text blocked, HTTP 403)
- Finding type
- gov_survey
- Finding
- GAO documented that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s - spanning this hull's construction (1940-41) and her entire service era (1941-1973, including the 1952-73 second career at Norfolk).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1979
- Population
- Navy shipyard workers and ship crews; asbestos program review
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. Full text not retrieved (gao.gov returns HTTP 403 to automated fetch, confirmed 2026-10-05) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-09
-
[11]Corn, Jacqueline Karnell, and Jennifer Starr, 'Historical perspective on asbestos: Policies and protective measures in World War II shipbuilding,' American Journal of Industrial Medicine 11(3):359-373 (1987) [other_primary]
- Locator
- Abstract and article, AJIM 11(3):359-373
- Finding type
- asbestos_application
- Finding
- Peer-reviewed historical study documents that asbestos was used extensively as an insulating and fireproofing material in U.S. shipbuilding during WWII - the era in which this hull was built (1940-41) - including federal reservation of asbestos supply for shipbuilding needs.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1940s era documented; article 1987
- Population
- WWII shipyard workers and ship crews (class context)
- Limitations
- Program/era-level scholarly documentation of asbestos use in WWII shipbuilding generally; does not name this vessel or class and does not establish that asbestos was or remains aboard this hull, nor quantity, location, condition, exposure, or causation. DOI link verified but publisher returns HTTP 403 to automated fetch - cited as bibliographic reference.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-10
-
[12]Batch-9309 search ledger (this record): live DANFS; NavSource; NHHC photo catalog; Mystic Seaport Rosenfeld record; shipbuildinghistory yard list; NPS Hoga NHL nomination; shipscribe class table; NARA deck-log index and catalog; NVR; MARAD; GAO product page; CourtListener (swept 2026-10-05, negative); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-tazha-yt147-01 through -14
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming USS Tazha (YT-147 / YTB-147 / YTM-147) was found in the public sources searched. CourtListener was swept to completion 2026-10-05 (authenticated, 4 base queries): '"USS Tazha"' returned zero opinions and zero dockets; '"YT-147"' returned zero opinions and two dockets, both name collisions (ALS Scan, Inc. v. Cloudflare, Inc., 2:16-cv-05051, C.D. Cal., copyright; John Hancock Life Insurance Company v. Abbott Laboratories, 1:05-cv-11150, D. Mass., contract) - neither vessel- nor asbestos-related. The NPS NHL nomination for her same-yard sister describes class construction and machinery with no asbestos or insulation-material statement. Secondary web sweeps surfaced no qualifying case; the only 'asbestos aboard' material is law-firm marketing content asserting asbestos without primary sourcing - excluded by source policy.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 2026-10-05
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a 1941 diesel-electric Navy tug retained in commercial service into the 1980s is era-consistent with asbestos-containing materials, and her post-Navy material history is undocumented. The litigation-repository negative covers the CourtListener opinion and docket indexes as of 2026-10-05; state-court and unindexed filings are out of scope. Builder-yard records, any Norfolk maintenance records, and the DRMS sale file are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-tazha-yt147-11