Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
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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-236-ata236-pkt-crew-dg-packet-md
-
[2]Shipscribe.com, 'USS ATA-174 (later Wateree) Class' - construction table, disposition table, class notes, and ship note for ATA-236 (compiled from U.S. National Archives / BuShips records) [other_primary]
- Locator
- Construction table row ATA-236; Disposition table row ATA-236; Class Notes (Lend-Lease batch and 14 Sep 45 directive paragraphs); Ship Notes row ATA-236
- Finding type
- vessel_history
- Finding
- ATA-236, Gulfport Boiler & Welding, Port Arthur TX: ordered under contract awarded 20 Nov 1944 - two days after CNO approved 20 additional tugs of the class (ATA 219-238) for Lend-Lease to the Soviet Union, officially assigned to the USSR by the Munitions Assignment Committee in Jan 1945; keel 10 Apr 1945, launched 6 Jun 1945, never commissioned (Commiss. column '--'); ship note records acceptance and delivery 3 or 6 Dec 1945; stricken 26 Feb 1946; disposal and MA sale 22 Apr 1947. Per the CNO directive of 14 Sep 1945 (covering ATA 234-238), the remaining tugs of this batch were accepted from the builders upon completion but, being surplus to Navy needs, were not commissioned, and were placed in caretaker status and turned over to WSA for disposal after removal of equipment. Shipscribe's ship note records the MC sale as to the Compania Argentina de Navegacion Dodero SA via the South American Trading Corp., New York, as merchant VENCEDOR, 'deleted 1962' - a conflicting identification flagged in ev-uss-ata-236-05.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1944-1947
- Limitations
- Shipscribe is a secondary compilation of NARA/BuShips primary records, not itself an official publication - key dates corroborated independently by NavSource, the shipbuildinghistory.com Gulfport yard table, and the Brazilian NGB record. Contains no asbestos information; establishes identity and administrative history only. The VENCEDOR identification conflicts with the convergent Brazilian record (ev-05). Does not establish exposure, causation, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-01
-
[3]NavSource Online: Service Ship Photo Archive, ATA-236 page [other_primary]
- Locator
- ATA-236 page - chronology block, specifications, photo captions (builders trials and drydock photos, Gulfport files; Triunfo R-23 photos)
- Finding type
- historical_record
- Finding
- NavSource Service Ship Photo Archive page for ATA-236: laid down 10 April 1945 by Gulfport Boiler & Welding Works, Port Arthur TX; launched 6 June 1945; 'Canceled by the War Shipping Administration in 1945'; completed 3 December 1945; struck from the Naval Register 26 February 1946; transferred to the Maritime Commission 22 April 1947; 'sold by the Maritime Commission in 1947 to Brazil, named RbAM Triunfo (R3)'; redesignated (R23) date unknown; final disposition 'fate unknown.' Page carries four photographs of ATA-236 from the files of Gulfport Boiler and Iron Works - two showing her underway, probably on builders trials off Port Arthur in December 1945, with 'no armament and no radar installed,' and two drydocked at the yard (one used by the yard in its advertising) - plus two photos in Brazilian service as RbAM Triunfo (R-23) circa 1947.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1945-1985
- Limitations
- Volunteer-curated secondary archive; key dates corroborated by Shipscribe's NARA-derived tables and the Brazilian NGB record. Contains no asbestos information. The line 'Canceled by the War Shipping Administration in 1945' is the same unexplained phrasing NavSource applies to sister-hull pages - carried in gaps. 'Fate unknown' is superseded for service history by NGB's documented record to Oct 1985; post-1985 disposition genuinely unknown. Absence of a DANFS entry corroborated by NHHC site search (2026-09-26).
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-02
-
[4]ShipbuildingHistory.com (T. Colton), 'Gulfport Shipbuilding, Port Arthur TX' - yard history and hull table; 'US Navy Ocean Tugs AT ATA ATF ATR' table [other_primary]
- Locator
- Gulfport hull table, row hull 265; http://www.shipbuildinghistory.com/smallships/auxat.htm row ATA-236; yard-history narrative
- Finding type
- vessel_history
- Finding
- Gulfport Shipbuilding yard table (shipbuildinghistory.com): hull 265 = 'ATA 236,' owner US Navy, type tug, 835 LDT, 134 ft, delivered 5-Jun-45, disposition 'Cancelled, to Brazil as Triunfo (R 3, later 23), scrapped 1962.' The companion 'US Navy Ocean Tugs AT ATA ATF ATR' table records 'Sold 1947 to Brazil as Triunfo (R 23), scrapped 1962.' The yard-history narrative describes Gulfport Boiler & Welding Works, Inc., established in the 1930s, as 'a leading builder of ocean tugs in WWII,' renamed Gulfport Shipbuilding Corporation postwar, acquired by Levingston Shipbuilding in 1970, primarily a repair yard thereafter, and closed 1985.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1945-1985
- Limitations
- Secondary yard-reference compilation. Internal date problem: the 'delivered 5-Jun-45' column entry precedes the documented launch (6 Jun 45) and conflicts with Shipscribe/NavSource completion in Dec 1945 - treated as a table error, carried in gaps. 'Scrapped 1962' is contradicted by the documented Brazilian service record through Oct 1985 (NGB) - flagged in ev-05/gaps. 'Leading builder of ocean tugs' is yard-level context, not hull evidence. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-03
-
[5]Navios de Guerra Brasileiros (NGB/naval.com.br), 'RbAM Triunfo - R 3/R 23' service-history page (compiled from Brazilian Navy sources: Mendonca & Vasconcelos, Repositorio de Nomes dos Navios da Esquadra Brasileira; NOMAR; Jane's Fighting Ships 1980-81; SRPM photos) [other_primary]
- Locator
- NGB T064 page - Datas, Caracteristicas, Historico (1947-1985 year entries), Comandantes, Bibliografia
- Finding type
- vessel_history
- Finding
- Navios de Guerra Brasileiros (NGB, naval.com.br) service record for RbAM Triunfo (R-3/R-23), identified as 'ex-USS ATA 236,' Classe Sotoyomo/Tritao: built by Gulfport Boiler & Welding Works Inc., Port Arthur, Texas; keel laid 10 April 1945; acquired by Brazil 22 April 1947; incorporated into the Marinha do Brasil by Aviso n. 1737 on 16 September 1947 in a ceremony at Lake Charles, Louisiana, first commander Capitao-de-Corveta Otavio Jose Fernandes; arrived Rio de Janeiro 19 November 1947 with RbAM Tritao (R-21) and RbAM Tridente (R-22). Documented 38-year active career of ocean towing and salvage (Santa Helena grounding salvage 1959; loss of towed buoy-tender Faroleiro Getulio Lima in heavy weather 1963; firefighting and tow of the burnt-out M/V Avanti 1980; DRAGAO XVIII and XX and TEMPEREX II/83 amphibious exercises through 1984); titled 'Navio de Socorro Distrital' of the 1st Naval District and 'Navio Socorro do Ano' repeatedly in the 1970s; 30 years active service by September 1977 with 1,433 days at sea and 246,229 miles steamed; struck from active service (baixa) 11 October 1985 with a disarmament ceremony at the Arsenal de Marinha do Rio de Janeiro (AMRJ), cais da portuguesa. Listed characteristics: 534 t standard / 835 t loaded; 43.60 m x 10 m x 4 m; diesel-electric, one GM 12-278A diesel generating 1,500 bhp on one shaft; 13 kt; two 20 mm Oerlikon; 5 officers and 40 enlisted.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1945-1985
- Population
- Brazilian Navy crews of RbAM Triunfo, 1947-1985 (design complement ~45)
- Limitations
- Specialist secondary compilation citing Brazilian Navy official records including the incorporation decree (Aviso n. 1737) - the most detailed source on this hull's post-U.S. disposition and the anchor of the Brazilian identification (ev-05). Post-1985 disposition after the disarmament ceremony is not stated on the page. Contains no asbestos information; establishes identity and service history only. Does not establish exposure, causation, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-04
-
[6]Source reconciliation: Shipscribe ATA-174 ship notes (rows ATA-236/ATA-237) vs NGB T064 (Aviso n. 1737), NavSource ATA-236 and ATA-237 pages, shipbuildinghistory.com Gulfport rows 265-266 [other_primary]
- Locator
- Shipscribe ship note ATA-236; NGB T064 Datas/Historico; NavSource 38236 and 38237 chronology blocks; Gulfport yard table rows 265-266
- Finding type
- historical_record
- Finding
- Identity conflict on the hull's 1947 disposal: Shipscribe's ship note records the Maritime Commission sale of ATA-236 (22 Apr 1947) as to the Compania Argentina de Navegacion Dodero SA via the South American Trading Corp., New York, merchant VENCEDOR, 'deleted 1962.' Three independent sources instead identify the hull delivered on that date as Brazilian: NGB documents Brazil's acquisition 22 April 1947 and incorporation by decree Aviso n. 1737 (16 Sep 1947, Lake Charles LA) as RbAM Triunfo (R-3, later R-23) with continuous documented service to 11 Oct 1985; the shipbuildinghistory.com Gulfport yard table records hull 265 'to Brazil as Triunfo (R 3, later 23)'; NavSource records 'sold by the Maritime Commission in 1947 to Brazil, named RbAM Triunfo (R3).' This record carries the Brazilian identification as more specifically documented (decree number, commissioning ceremony, named first commander, 38-year service history); the Dodero/VENCEDOR line is treated as an unresolved conflict - plausibly a cross-wiring with adjacent ATA-237, whose sale to the same Dodero chain as VENGADOR is corroborated by Shipscribe, NavSource, and the yard table alike.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1946-1985
- Limitations
- Source reconciliation, not a primary record: the VENCEDOR merchant sale may reflect a real registry entry mis-attributed to this hull - Shipscribe's 'deleted 1962' and Colton's identical 'scrapped 1962' fates suggest a shared register source, possibly a different Dodero tug. Not resolved at primary level; the MC sale contract file (NARA) would settle it. Colton's 'scrapped 1962' is additionally impossible against the documented 1985 baixa. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-05
-
[7]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 program under which this steel-hulled auxiliary tug was built at Gulfport Boiler & Welding Works, Port Arthur, TX (1945).
- Verification
- inferred
- 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, this class, or this yard, and does not establish that asbestos was or remains aboard this hull, nor quantity, location, condition, exposure, or causation. Diesel-electric hull - no steam plant; era-typical applications differ accordingly. The hull's subsequent 38 years of Brazilian naval maintenance and repair are likewise undocumented for materials content.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-06
-
[8]Batch-2907 search ledger (this record): NHHC/DANFS site search; CourtListener opinion/docket sweep; MARAD/NDRF check; shipyards.json yard check [other_primary]
- Locator
- search_ledger rows sl-uss-ata-236-01 through sl-uss-ata-236-09
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed case naming ATA-236 (or Brazilian name Triunfo) was found in the public sources searched (see search_ledger). The hull was never commissioned and never carried a U.S. Navy crew - there is no U.S. Navy shipboard-exposure population for this vessel. The asbestos-relevant populations are construction workers at Gulfport Boiler & Welding Works (Port Arthur, TX, 1945), the Brazilian Navy crews who manned Triunfo across 38 years of documented active service (1947-1985, design complement ~45), Brazilian yard and arsenal workers maintaining her, and breakers/salvors after the October 1985 disarmament - none documented for asbestos for this 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 - wartime construction is consistent with era materials having been installed, and 38 years of Brazilian service occurred largely within the asbestos era in naval maintenance. Does not establish that asbestos is or was present; does not establish or defeat any claim of exposure or legal eligibility. Never-commissioned status limits only the U.S. Navy population, not yard, Brazilian-service, or breaker exposures.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-07
-
[9]Record paths identified via Shipscribe class notes (BuShips contract chain) and NGB T064 bibliography; NARA RG-19/RG-178; Brazilian SDGM/AMRJ archives [other_primary]
- Locator
- Shipscribe ATA-174 class notes; NGB T064 Bibliografia
- Finding type
- historical_record
- Finding
- Archival leads (identified but not retrieved): BuShips contract and acceptance files for the ATA 219-238 Lend-Lease batch (contract awarded 20 Nov 1944) - the documents that would record caretaker condition and equipment removal for this hull and would settle the VENCEDOR/Triunfo sale-chain conflict; Brazilian Navy sources underlying the NGB entry (SDGM service records; text of incorporation Aviso n. 1737) covering Triunfo's 1947-1985 maintenance, refits, and disposal; Arsenal de Marinha do Rio de Janeiro (AMRJ) records for the October 1985 disarmament and subsequent scrapping.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1944-1985
- Limitations
- Leads only - none of these files were retrieved (not digitized in public sources; no paid reproduction authorized). Whether any such file contains insulation/materials information is unknown.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-08
-
[10]CourtListener API v4 (authenticated) - type=o 'ATA-236' (0), type=o 'ATA 236' (0), type=r 'ATA-236' (0), type=r 'ATA 236' (0) [court_record]
- Locator
- search_ledger row sl-uss-ata-236-06
- Finding type
- litigation_documented
- Finding
- CourtListener sweep (authenticated API v4, 2026-09-26): exact-phrase opinion and RECAP docket searches for 'ATA-236' and space variant 'ATA 236' returned 0 results on all four queries. No qualifying asbestos litigation or other litigation naming the hull located.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 2026-09-26
- Limitations
- Absence of a docketed case is not evidence about shipboard conditions; a litigation sweep cannot find or exclude hull-specific asbestos exposure. Brazilian name Triunfo is a high-collision generic and was not independently searched - a coverage limitation logged in gaps. U.S. dockets would in any event be an unlikely venue for claims arising from Brazilian naval service.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-236-09