Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]research packet crew-dg-packet.md (4 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-ata-235-ata235-pkt-crew-dg-packet-md
-
[2]ShipScribe, 'USS ATA-174 (later Wateree) Class' register, compiled by Stephen S. Roberts from Bureau of Ships / Naval Vessel Register and Maritime Commission records [other_primary]
- Locator
- Construction table row ATA-235; fate table row ATA-235; Class Notes (ATA 219-38 Soviet batch; 14 Sep 45 directive; Aug 1946 Levingston contract); Ship Notes ATA-235
- Finding type
- vessel_history
- Finding
- Register entry for ATA-235: ordered 20 Nov 1944 (one of twenty tugs ATA 219-238 approved by CNO 18 Nov 1944 for Lend-Lease to the Soviet Union; officially assigned to the USSR by the Munitions Assignment Committee 17 or 24 Jan 1945, assignment retracted as the war ended); built by Gulfport Boiler & Welding, Port Arthur TX; keel laid 21 Mar 1945; launched 19 May 1945; never commissioned; accepted and delivered 3 or 6 Dec 1945; stricken 12 Mar 1946; disposal via Maritime Commission and sale (delivery) to the Brazilian Navy Purchasing Office, Washington, D.C., as TRIDENTE effective 26 Mar 1947; deleted ca. 1986. Class notes: on 14 Sep 1945 (for ATA 234-238) CNO directed the ships be accepted upon completion but not commissioned, held in caretaker status, and turned over to WSA for disposal after equipment removal; in Aug 1946 Levingston Shipbuilding received a Navy contract to complete ATA-234 and ATA-235, and completed them with ATA-225 for Brazil as TRITAO, TRIDENTE, and TRIUNFO.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1944-1986
- Limitations
- Compiled register transcribing official U.S. Navy/MC data - a secondary transcription, not the underlying primary document; the acceptance/delivery date itself is stated as '3 or 6 Dec 45'; establishes the construction/disposal chain only and contains no asbestos, materials, or crew-exposure content.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-235-01
-
[3]NavSource Online: Service Ship Photo Archive, ATA-235 page (compiles official data; photos from Gulfport Boiler & Welding Works files and official Brazilian Navy photo via Jane's Fighting Ships 1956-57) [other_primary]
- Locator
- ATA-235 archive page: chrono list, specifications block, photo captions 093823502/093823503/093823501
- Finding type
- vessel_history
- Finding
- NavSource archive page for ATA-235 (Sotoyomo class auxiliary fleet tug): laid down 21 March 1945 as Gulfport hull no. 264 by Gulfport Boiler & Welding Works, Port Arthur TX; launched 19 May 1945; completed 3 December 1945; struck from the Naval Register 12 March 1946; transferred to the Maritime Commission 26 March (year printed as 1946) for disposal; sold in 1947 to Brazil and named Tridente (R-2), later redesignated R-22; final disposition 'fate unknown.' Photographs show the tug on builder's trials off Port Arthur in December 1945 and in Brazilian service circa 1960. Listed specifications: 835 t light / 1,360 t full load, 143 ft length, 12 kts, one 3"/50 DP mount + two 20mm AA, largest boom 5 t, complement 5 officers + 40 enlisted, diesel fuel 1,200 bbls, GM diesel-electric propulsion with single Fairbanks-Morse reduction gear, single propeller.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1945-1947
- Limitations
- Volunteer-compiled secondary archive, not an official source; the Maritime Commission transfer year is printed as 1946 while the ShipScribe register and Brazilian record place the MC disposal/sale on 26 Mar 1947 - treated as a typo and flagged in gaps; propulsion block ('two GM 12-278A ... 1,200 shp') differs from the class-standard single 1,500-shp unit - flagged in gaps; contains no asbestos, materials, or crew-health content.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-235-02
-
[4]Navios de Guerra Brasileiros (NGB), 'RbAM Tridente - R 22' vessel page - cites Brazilian Navy official sources: SDGM name repository (Mendonca & Vasconcelos), Jane's Fighting Ships, and NOMAR service bulletins [other_primary]
- Locator
- NGB T056 page: Datas/Caracteristicas/Historico sections; corroborating memoir at repositorio.marinha.mil.br (bitstream 20.500.14867/27239)
- Finding type
- vessel_history
- Finding
- Brazilian naval-history record: RbAM Tridente R-22, ex-USS ATA-235, Sotoyomo/Tritao class, first Brazilian ship of the name; built by Gulfport Boiler & Welding Works, Port Arthur TX; keel 21 Mar 1945; USN incorporation recorded as 3 Dec 1945; acquired by Brazil 26 Mar 1947; incorporated into the Marinha do Brasil by Aviso n. 1737 on 16 Sep 1947 at a ceremony in Lake Charles, Louisiana, CC Alexandrino de Paula Freitas Souza in command; arrived Rio de Janeiro 19 Nov 1947 with sisters Tritao (R-21) and Triunfo (R-23); notes that transfer to the Soviet Navy had been planned before the Brazilian transfer; documented towing and fleet duties through 1986 (including 'Navio de Socorro Distrital' title for 1986); sold for demolition 24 Jul 1990. A Brazilian Navy repository memoir independently lists Tridente (R-22) among the active fleet tugs in the late 1960s.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1945-1990
- Population
- Brazilian Navy crew, RbAM Tridente, 1947-ca.1990
- Limitations
- Secondary compilation in Portuguese citing official Brazilian Navy publications; the formal decommissioning date is not given (active through 1986, demolition sale 1990-07-24); no asbestos, materials-refit, or crew-health content; Brazilian-service machinery specification (one GM 12-278A, 1,500 bhp) corroborates the class-standard plant.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-235-03
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[5]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 a fireproofing and insulating material in U.S. shipbuilding during WWII - the era and naval-construction program under which this 1945 steel auxiliary fleet tug was built - and that wartime demand drove unprecedented asbestos utilization aboard U.S. hulls, with heat insulation, gaskets, and packing among the standard applications.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-26
- 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 remained aboard this hull, nor quantity, location, condition, exposure, or causation. This tug's diesel-electric plant (no boilers/steam system) narrows the plausible product set relative to steam ships.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-235-04
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[6]shipbuildinghistory.com (Tim Colton), WWII ocean-tug construction table and Gulfport Boiler & Welding yard list (hull 264, ATA 235) [other_primary]
- Locator
- auxat.htm table row ATA 235; navalmarinearchive.com mirror of Gulfport yard list row 264
- Finding type
- vessel_history
- Finding
- Secondary shipbuilding tabulation records ATA-235 (Gulfport B&W hull 264) 'Sold 1947 to Brazil as Tridente (R 22), scrapped 1962.' The 1962 fate is contradicted by the better-documented Brazilian record (ev-03): active Brazilian fleet service through 1986 and sale for demolition 24 Jul 1990, independently corroborated by a Brazilian Navy repository memoir listing Tridente active in the late 1960s. The 'scrapped 1962' entry appears conflated with merchant sisters ATA-236/ATA-237, whose careers do end ca. 1962 in the ShipScribe register. The 1962 date is not used in this record.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1947-1990
- Limitations
- Secondary tabulation; its 1962 fate date is treated as an error against primary-citing Brazilian sources. Correction concerns disposal date only - neither source contains asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-235-05
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[7]CourtListener API v4 authenticated searches (opinions and RECAP dockets) for "ATA-235" and "ATA 235" [court_record]
- Locator
- cl-auth-search.py authenticated queries, search_ledger sl-uss-ata-235-06
- Finding type
- litigation_documented
- Finding
- CourtListener sweep returned zero results: "ATA-235" opinions (type=o) count=0, "ATA-235" dockets (type=r) count=0, "ATA 235" opinions count=0. No qualifying asbestos litigation, other litigation, or name-collision hit names this hull in CourtListener's opinion or docket indexes.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 2026-09-26
- Limitations
- A null search result establishes only that no indexed opinion or RECAP docket names the hull - it does not reach unindexed state-court or trial-level filings, and it neither proves nor disproves asbestos exposure aboard the hull. Unnamed numbered auxiliaries are also poorly indexed by name; searches were run on the hull designation in hyphenated and unhyphenated forms.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-235-06
-
[8]Batch-2906 search ledger (this record): NavSource ATA-235 archive page; ShipScribe ATA-174-class register; NHHC/DANFS via hazegray and HyperWar mirrors; MARAD Vessel History Database; Brazilian naval-history record (NGB) and marinha.mil.br repository; shipbuildinghistory.com tug table; CourtListener ship-name and hull-number search [other_primary]
- Locator
- search_ledger rows sl-uss-ata-235-01 through sl-uss-ata-235-07
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, museum documentation, or docketed asbestos case naming ATA-235 was found in the public sources searched (see search_ledger). No DANFS entry exists for this unnamed, never-commissioned hull.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 2026-09-26
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - 1945 U.S. naval auxiliary construction was era-typical for asbestos-containing materials, and the hull's four-decade Brazilian career (1947-ca.1990) is undocumented for materials or refits. Does not establish that asbestos is or is not present; does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-235-07