Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
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[1]research packet 913-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-pc-604-pc604-pkt-913-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, PC-604 (build/commissioning timeline, specifications, transfer to Brazil, photo record) [other_primary]
- Locator
- navsource.net/archives/12/010604.htm - timeline block, specifications block, photo table (1201060403)
- Finding type
- vessel_history
- Finding
- NavSource patrol-craft record for this hull: laid down 16 February 1942 by Luders Marine Construction Co., Stamford, CT; launched 24 October 1942; commissioned USS PC-604, 9 March 1943; decommissioned 11 June 1943, transferred to Brazil and named Guaiba (CS 3), reclassified G-3 after World War II; Brazilian decommission 3 December 1949; scrapped 1952. Specifications: 295 t light / 450 t full; 173 ft 8 in x 23 ft x 10 ft 10 in; 20.2 kt; complement 65; armament one 3"/50 dual-purpose mount, one 40mm, three 20mm, two Mousetrap projectors, four K-guns, two depth-charge tracks; propulsion two 1,440 bhp General Motors 16-258S diesels, Farrel-Birmingham single reduction gear, two shafts. Photo record includes an official U.S. Navy Seventh Naval District photograph of PC-604 and PC-605 being turned over to the Brazilian Navy at Miami, 11 June 1943. Page states: 'There is no DANFS history available for PC-604.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1952
- Population
- Luders Marine construction trades 1942; USN crew Mar-Jun 1943 (design complement 65); Brazilian crew 1943-c.1949/52
- Limitations
- NavSource is a curated archival photo/data site, not a government primary record; dates and specs are corroborated independently by the Brazilian Navy DPHDM form and the Revista Maritima Brasileira transfer table. Documents history and specifications only - contains no asbestos or materials information. Brazilian decommissioning date conflicts with NGB (1952) - carried in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-01
-
[3]Marinha do Brasil, Diretoria do Patrimonio Historico e Documentacao da Marinha (DPHDM), Formulario de Informacoes Historicas for NPa Guaiba (Of. 8/2020), predecessor-vessel section: Caca Submarino Guaiba (G-3), ex-USS PC 604 [other_primary]
- Locator
- DPHDM FIH form, item on predecessor vessels, pp. 9-10 of PDF (section '2) CACA SUBMARINO GUAIBA (G-3)')
- Finding type
- historical_record
- Finding
- Official Brazilian Navy historical-documentation record naming this hull: 'o Caca Submarino Guaiba - G-3, ex-USS PC 604, foi o segundo navio a ostentar esse nome na Marinha do Brasil' - second Brazilian ship of the name (for the Guaiba river), G-class subchaser, one of a series of eight. Built by Luders Marine Construction Co., 'Stanford' (sic), Connecticut; launched 24 October 1942; incorporated into the U.S. Navy 9 March 1943; transferred and incorporated into the Brazilian Navy 11 June 1943 in a ceremony at Miami, Florida, first commander Capitao-de-Corveta Aluisio Galvao Antunes. Steel hull divided into seven watertight compartments; 52.765 m length, 1.90 m draft, 335 t normal displacement; two GM Diesel four-stroke 16-cylinder V model 16-258B engines totaling 3,600 HP on two shafts, max speed 19.5 kt; two GM 6-71 diesel-electric generating sets (90 HP / 60 kW, 120 V DC); armament listed as one 76mm/.50 Mk XXI gun, one 20mm Mk IV automatic AA gun, two 300-lb depth-charge racks, four single mortars, two double rocket-bomb catapults, capacity for 58 depth charges; sensors QCJ-6 listening gear, NJ-3 echo-sounder, Degauss degaussing equipment, and a Western Electric CW-43 ABN surface radar.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1952; form issued 2020
- Population
- Brazilian crew 1943-c.1949/52; construction trades at Luders Marine 1942
- Limitations
- Official Brazilian Navy archival document (DPHDM) prepared 2020 for the modern successor vessel's file - names this hull as ex-USS PC-604 directly. Yard town misprinted 'Stanford' (Stamford per NavSource). Displacement, horsepower, and armament figures differ from USN-era sources - reflects Brazilian-era configuration and is carried in gaps rather than reconciled. Contains no asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-02
-
[4]Bittencourt, V.A. (Ref.) Luiz Edmundo Brigido, 'O Brasil declara guerra ao Eixo: 70 anos,' Revista Maritima Brasileira v.132 n.04/06 (2012), pp. 34-58 - annexed transfer table of U.S. vessels received by the Forca Naval do Nordeste [other_primary]
- Locator
- RMB article, annexed table 'Navios da Forca Naval do Nordeste - Recebidos da Marinha americana' (near end of article)
- Finding type
- historical_record
- Finding
- Official Brazilian Navy journal record naming this hull in the annexed transfer table of ships received from the U.S. Navy: 'PC 604-Guaiba - 11-6-1943 - Aluisio Galvao Antunes - entregue em Miami' (delivered at Miami, 11 June 1943, first commander Capitao-de-Corveta Aluisio Galvao Antunes). The table lists all eight steel-hulled 173-ft PC-class chasers ('cacas-ferro') transferred September 1942 - November 1943: PC 544-Guapore (Natal), PC 547-Gurupi (Natal), PC 604-Guaiba (Miami), PC 605-Gurupa (Miami), PC 607-Guaraja (Miami), PC 554-Goiana (Miami), PC 1236-Grajau (Miami), PC 561-Grauna (Miami). Article text confirms the eight 'cacas-ferro' joined the Forca Naval do Nordeste, whose escort vessels participated in 254 international convoys totaling 3,164 merchant ships.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945 (transfers); 2012 (publication)
- Population
- Brazilian commissioning crews (Key West-trained); Forca Naval do Nordeste escort crews 1943-45
- Limitations
- Official Brazilian Navy journal retrospective (2012) - a compiled historical annex, not a contemporaneous transfer document; independently corroborated by NavSource and the DPHDM form. 'PC 607-Guaraja' is a spelling variant of Guajara. Convoy totals are force-level, not vessel-specific. No asbestos or materials content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-03
-
[5]Soares, C.F. Gerson de Macedo, 'Marinha do Brasil na Segunda Guerra Mundial - Parte 5,' Revista Maritima Brasileira v.131 n.10/12 (2011), pp. 154-164 [other_primary]
- Locator
- RMB article, passage on the G-series 'cacas-ferro' (Guaiba CS-3 radar; Miami deliveries; Key West ASW training; convoy escorts to Cuba/Trinidad/Belem/Recife; Forca Naval do Nordeste/TF-46)
- Finding type
- historical_record
- Finding
- Official Brazilian Navy journal wartime-history article (author was chief of staff of the Northeast Naval Force during WWII) naming this vessel by her Brazilian name: 'o Guaiba (CS-3) foi o primeiro navio de guerra brasileiro dotado de radar' - the first Brazilian warship fitted with radar, then a closely held secret, its cession indicating exceptional confidence; all G-class chasers carried Asdic-type submarine listening gear. Describes the operating pattern: Miami-delivered chasers entered war service after a short exercise period escorting convoys to Cuba, Trinidad, Belem, and Recife, then were incorporated into the Forca Naval do Nordeste (Task Force 46 of the U.S. Fourth Fleet); Brazilian crews had trained at the Key West antisubmarine-tactics schools via the Brazilian Commission at Miami.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1945 (operations); 2011 (publication)
- Population
- Guaiba wartime crew; Brazilian ASW trainees at Key West
- Limitations
- Names the vessel as Guaiba (CS-3); identity as ex-PC-604 established by the DPHDM form and NavSource. Retrospective official-journal history published 2011 from wartime records and memory - operational context, not a materials record. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-04
-
[6]NARA, file unit 'PC-604, 4/17/43-6/11/43' (NAID 192392093), series Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities (NAID 594996), RG 24 (Records of the Bureau of Naval Personnel), Roll 5825 - 31 digitized images via the Ancestry partnership [other_primary]
- Locator
- catalog.archives.gov/id/192392093 - file unit title and parent-series block
- Finding type
- historical_record
- Finding
- Digitized U.S. Navy muster-roll file for this hull covering 17 April - 11 June 1943 - effectively the vessel's entire commissioned U.S. period after fitting out (commissioned 9 March, transferred 11 June 1943). Primary personnel record naming the ship and its assigned complement for that window.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943
- Population
- USN crew aboard PC-604, 4/17/43-6/11/43
- Limitations
- Catalog-level identification verified; the 31 page images were not reviewed individually. Muster rolls document personnel, not materials - exposure-relevant only as crew complement documentation. No asbestos content. The 9 March - 16 April 1943 window is not in this file unit.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-05
-
[7]Navios de Guerra Brasileiros (NGB), 'CS Guaiba - G 3' vessel record, naval.com.br [other_primary]
- Locator
- naval.com.br/ngb/G/G052/G052.htm - 'Datas', 'Caracteristicas', 'Historico' blocks
- Finding type
- vessel_history
- Finding
- Brazilian-vessel documentation record for this hull under her Brazilian name: keel laid 16 February 1942; launched 24 October 1942; USN incorporation 9 March 1943; USN baixa 11 June 1943; Brazilian incorporation 11 June 1943; Brazilian baixa 1952. Characteristics at Brazilian incorporation: 280 t standard / 450 t loaded; 52.73 m x 7.01 m x 3.04 m; two GM 16-cylinder model 16-258S diesels at 2,000 bhp on two shafts with three-blade propellers; max 20 kt; range 3,000 nm at 12 kt; one 3"/50 (76.2mm) gun, one 40mm Bofors L/60 on Mk 3 mount, two 20mm Oerlikon on Mk 4 single mounts, two Mousetrap Mk 20 octuple ASW throwers, two Mk 3 depth-charge racks, two Mk 6 K-type side throwers; SF or SL surface radar plus hull sonar; complement 65 (5 officers, 60 enlisted). Named for the Guaiba river emptying into Lagoa dos Patos, Rio Grande do Sul; class nicknamed 'Caca-Ferro.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1952
- Population
- Brazilian crew 1943-1952
- Limitations
- Reputable Brazilian naval-history documentation project (secondary, bibliography-based - cites Mendonca/Vasconcelos SDGM 1959 and Saldanha da Gama 1982); corroborates the official DPHDM and RMB records. Figures conflict with NavSource and DPHDM on displacement and horsepower - variants carried by attribution in gaps, not reconciled. 'Baixa 1952' conflicts with NavSource's 3 Dec 1949 decommissioning - carried in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-06
-
[8]Foreign Relations of the United States, 1947, vol. VIII (The American Republics), doc. 364 - Secretary of State Marshall airgram A-454 to the Embassy in Brazil, 29 July 1947 [other_primary]
- Locator
- FRUS 1947 VIII doc 364 (832.34/7-2947), airgram text and vessel-type enumeration
- Finding type
- historical_record
- Finding
- U.S. government primary document establishing the legal mechanism for this hull's transfer: U.S. naval vessels in Brazilian possession - including '8 subchasers (PC)' - were leased under a wartime charter-party agreement because title transfer was not permitted under the Lend-Lease Act; the U.S. retained title. As of July 1947 the Navy Department considered the leased ships surplus and planned to offer all but the 8 destroyer escorts for sale to Brazil as surplus property at a low price, without requiring return to a U.S. port.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1947
- Limitations
- Group-level document - names '8 subchasers (PC)' without hull numbers; PC-604's membership in that group is established by NavSource, DPHDM, and RMB. Documents the lease framework and 1947 disposition plan only; the sale-completion date and instrument are not in this document (carried in gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-07
-
[9]Era inference built on: NavSource PC-604 specifications (PC-461 class; twin GM 16-258S diesel plant, no steam system) + DPHDM propulsion description + WWII-era naval-construction material practice [other_primary]
- Locator
- Inference rests on ev-01/ev-02 propulsion records
- Finding type
- asbestos_application
- Finding
- Era inference: a PC-461-class steel-hulled submarine chaser built 1942 at a private Connecticut yard would have carried period-standard asbestos applications consistent with diesel-powered naval craft - exhaust and machinery lagging, engine and piping gaskets, valve packing, electrical insulation, and deck/bulkhead coverings. With no boilers, steam lines, or turbines, the asbestos-relevant footprint is materially smaller than on steam vessels of the same era.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1952
- Population
- Luders Marine construction trades 1942; USN and Brazilian crews 1943-c.1952
- Limitations
- Inference only - no hull-level material specification, survey, or abatement record was located for this vessel. NARA RG 19 'General Information Books' (per-vessel material specs) were not retrieved and remain the open lead for hull-level specification. Does not establish that asbestos was or was not aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-08
-
[10]GAO, 'Navy Efforts To Protect Workers From Asbestos Exposure' (HRD-80-2, 18 October 1979) - product-page description [gao]
- Locator
- gao.gov product page HRD-80-2
- Finding type
- gov_survey
- Finding
- GAO reviewed Navy efforts to protect workers from asbestos exposure at the Long Beach and Norfolk Naval Shipyards, covering the use of asbestos in Navy ships, the cost of removal, and compensation programs; it documents the Navy's 1975 policy (remove/replace only damaged or repair-necessary insulation with nonasbestos materials) modified in 1979 to selective replacement in high-maintenance areas - program-level corroboration of era asbestos prevalence aboard Navy ships.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (report); period reviewed covers wartime-1970s
- Population
- Navy and shipyard workers generally
- Limitations
- Program-level and shipyard-focused (fieldwork at Long Beach and Norfolk Naval Shipyards); verified live via the gao.gov product page 2026-10-03. This hull was built at a private yard (Luders Marine) and served the USN only three months before transfer - the GAO record is era context, not hull evidence.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-09
-
[11]Batch-7979 search ledger (this record): NHHC DANFS (404); NavSource; NARA catalog; Brazilian Navy DPHDM archive; Revista Maritima Brasileira (official MB journal); FRUS 1947 VIII; HyperWar USN ship index; NGB; NIOSH/yard-level search; CourtListener (paced - see report); secondary web [other_primary]
- Locator
- search_ledger rows sl-uss-pc-604-pc604-01 through sl-uss-pc-604-pc604-12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no hull survey, abatement contract, hazmat disclosure, or docketed asbestos case naming PC-604 or Guaiba (CS-3/G-3) was found in the public sources searched. No DANFS entry exists for this hull (NHHC 404 verified live; NavSource states none exists). No NIOSH or OSHA record specific to the builder yard (Luders Marine Construction Co.) was located.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - era-consistent applications remain a reasonable inference. Does not establish or defeat any claim of exposure or legal eligibility. CourtListener could not be searched this session (fleet pacing blocked, sl-11) - litigation status is open, not negative.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-604-pc604-10