Evidence
16 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-16).
-
[1]research packet 909-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-574-pc574-pkt-909-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, PC-574 - construction milestones, specifications, commanding officer, disposal (volunteer secondary compilation) [other_primary]
- Locator
- NavSource 12/010574.htm header block, specifications block, commanding-officer table
- Finding type
- vessel_history
- Finding
- Documented for this hull: PC-461 class submarine chaser laid down 30 December 1941 by the Dravo Corp., Pittsburgh, PA; launched 30 March 1942; commissioned 2 July 1942; decommissioned 15 May 1946 in Hawaii; sold November 1946 to Sid's Truck and Auto Sales, Ltd. of Honolulu, Territory of Hawaii; fate unknown. Specifications: 450 t. displacement; 173'8" length; 23' beam; 10'10" draft; 20.2 kts; complement 65; armament one 3"/50 dual-purpose mount, one 40mm mount, three 20mm guns, two rocket launchers, four depth charge projectors, two depth charge tracks; propulsion two 1,440 bhp Hooven-Owen-Rentschler R-99DA diesel engines, Westinghouse single reduction gear, two shafts. Call sign Nan-Uncle-Baker-Sugar. First CO: LT Leonard Scott Bailey, USNR, 2 July 1942-April 1943 (later Rear Admiral, USNR-R). Page states 'There is no DANFS history available for PC-574.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- Dravo construction trades (1941-42); crew (1942-46)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry; milestone dates track official sources but the Pittsburgh builder attribution conflicts with the NHHC caption (see ev-14). Contains no asbestos content. Armament reflects a late-war fit; wartime fits varied.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-01
-
[3]NHHC Online Library of Selected Images, 'USS PC-574, 1942-1946' (Naval Historical Center photo-catalog caption, transcription via ibiblio HyperWar); photo NH 97921 also at live NHHC page history.navy.mil/our-collections/photography/numerical-list-of-images/nhhc-series/nh-series/NH-97000/NH-97921.html [other_primary]
- Locator
- ibiblio HyperWar Online Library, usnsh-p/pc574.htm caption block; NHHC photo page NH 97921
- Finding type
- vessel_history
- Finding
- Official NHHC catalog text for this hull: 'USS PC-574, a 173-foot submarine chaser, was built at Wilmington, Delaware, and commissioned in early July 1942. She operated in the Atlantic and Caribbean areas until March 1945, then was transferred to the Pacific for service with the Seventh Fleet. PC-574 was decommissioned in May 1946 at Pearl Harbor and sold in November of that year.' Cataloged photo NH 97921 ('Underway during World War II. Donation of Phil Wagner, 2001') is NHHC's only held image of this hull.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Crew, Atlantic/Caribbean 1942-45 and Seventh Fleet 1945-46
- Limitations
- Authoritative for the service summary (Atlantic/Caribbean to March 1945; Seventh Fleet Pacific service; Pearl Harbor decommissioning). Its 'built at Wilmington, Delaware' attribution conflicts with NavSource/uboat.net and the Dravo Pittsburgh yard table - carried as an unresolved conflict (ev-14, gaps). One-line caption; no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-02
-
[4]NARA, 'USS PC-574 - War Diary, 12/1-31/42', NAID 134052657, RG 38 Records of the Office of the Chief of Naval Operations, series 'World War II War Diaries, Other Operational Records and Histories' (NAID 4697018); Fold3 scans of microfilm roll A192 (32 images) [other_primary]
- Locator
- NAID 134052657, deck-log pages for 1, 30, 31 December 1942 (scan images 0133, 0162, 0163 of 32)
- Finding type
- historical_record
- Finding
- The hull's own deck log, December 1942 (filed in the war-diary series): on 1 December 1942 PC-574 was 'Moored port side to south side pier two, U.S. Naval Section Base, Trinidad, B.W.I.' in upkeep status with USS PC-624 moored alongside; Lt. L. S. Bailey, USNR, commanding. On 30-31 December she was 'Steaming enroute U.S. Naval Section Base, Teteron Bay, Trinidad, B.W.I. to N.O.B. Guantanamo Bay, Cuba' as 'Vice Escort Commander' on a merchant convoy, 'patrolling ... quarter of convoy and sweeping sectors with supersonic sound gear,' zig-zagging on base course 335/321 true at convoy speed 8 knots, ship darkened, condition of readiness II-M; the log identifies the escort commander's vessel by pendant '(D.145)' (consistent with DD-145, USS Greer; the penned name is uncertain on the scan); on 31 December she sighted Haiti at 1605.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-12
- Population
- Crew of PC-574; convoy escort group; Trinidad section-base population
- Limitations
- Primary operational record for one month only; establishes Caribbean convoy-escort employment in December 1942 - no asbestos or material content. Escort-commander vessel identification rests on the handwritten pendant 'D.145' (name script ambiguous: reads close to 'Erie,' which cannot be correct - USS Erie PG-50 had capsized 5 December 1942 - so DD-145 USS Greer is the consistent hull; flagged, not resolved).
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-03
-
[5]U.S. Naval Administration in World War II: Commander South Atlantic Force (official Navy administrative history), Part 2, 'Operations for 1943 - January' (ibiblio HyperWar transcription) [other_primary]
- Locator
- 146-SoLant-2.html, 'Operations for 1943 - January' section (printed p. 121)
- Finding type
- historical_record
- Finding
- Official Navy administrative history names this hull joining the force: 'January saw other substantial additions made to the strength of Solantfor. PC 574 reported for duty on the 2nd of the month' - i.e., 2 January 1943, during the South Atlantic anti-submarine/convoy-escort campaign out of Brazil (same volume lists the force's 15 PCs and convoy system).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-01
- Population
- Crew of PC-574; South Atlantic Force/NOB Recife population
- Limitations
- Establishes force assignment and arrival date only; does not detail PC-574's individual operations (deck logs ev-05/-06/-07 supply those). 'Reported for duty' is administrative attachment; her 30-31 December deck log shows her still convoy-escorting toward Guantanamo, so her physical arrival at Recife postdates the administrative attachment date. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-04
-
[6]NARA, 'USS PC-574 - War Diary, 3/1-31/43', NAID 134152519, RG 38, series NAID 4697018; Fold3 scans (35 images) [other_primary]
- Locator
- NAID 134152519, deck-log page for 1 March 1943 (scan image 0859 of 35)
- Finding type
- historical_record
- Finding
- Deck log, 1 March 1943: 'Steaming on convoy escort with convoy BT-5, composed of 28 Allied merchant vessels, enroute Recife, Pernambuco, Brazil to U.S. Naval Section Base, Trinidad, B.W.I. This vessel operating with convoy escort Task Force 2.3.2.3, composed of the U.S.S. Spry (PG-64), U.S.S. Saucy (PG-65), and U.S.S. PC-493 under operational order BT-5-'42 of Comsolant. This vessel attached to Commander South Atlantic Force, U.S. Atlantic Fleet...' The same page records a report received from the escort commander that an enemy submarine had been sighted the night of 28 February-1 March in the vicinity of Fortaleza, Brazil, approximately 500 miles astern of the convoy. Escort commander and SOPA in USS Spry (PG-64).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-03
- Population
- Crew of PC-574; TF 2.3.2.3 escort group; BT-5 merchant crews
- Limitations
- Primary operational record; documents escort composition, convoy identity, force attachment, and a reported (not engaged) submarine sighting report - no attack by this hull is recorded on this page and no enemy-contact claim is made. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-05
-
[7]NARA, 'USS PC-574 - War Diary, 4/1/43 to 6/30/43', NAID 134259834, RG 38, series NAID 4697018; Fold3 scans (99 images) [other_primary]
- Locator
- NAID 134259834, deck-log page for 1 April 1943 (scan image 1635 of 99)
- Finding type
- historical_record
- Finding
- Deck log, 1 April 1943: 'Moored starboard side to port side U.S.S. PC-493, Recife, Pernambuco, Brazil... this vessel attached to Fourth Fleet, South Atlantic Force, U.S. Atlantic Fleet.' She got underway 0756 from alongside PC-493 at pier 6, Recife, 'enroute Puerto de Cabedelo, Brazil on orders of Comsolant,' embarking Brazilian pilot for the Cabedelo harbor entry - documents the SoLantFor-to-Fourth Fleet redesignation in effect aboard this hull and independent inter-port tasking between convoy assignments.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-04
- Population
- Crew of PC-574; Recife port population; Brazilian pilot embarked for Cabedelo entry
- Limitations
- Primary operational record for the April-June 1943 quarter (99 scans, reviewed selectively); documents Brazil-based employment and the Fourth Fleet attachment line - no asbestos or material content. Daily entries are routine navigation/upkeep; only the 1 April page is quoted here.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-06
-
[8]NARA, 'USS PC-574 - War Diary, 12/1-31/43', NAID 78235007, RG 38, series NAID 4697018; Fold3 scans (13 images) [other_primary]
- Locator
- NAID 78235007, deck-log pages for 1 and 29-31 December 1943 (scan images 0805, 0816 of 13)
- Finding type
- historical_record
- Finding
- Deck log, December 1943 (typed, marked CONFIDENTIAL): 'Wednesday, 1 December 1943. This vessel is operating with Task Group 42.2 and attached to FOURTH FLEET. Steaming enroute U.S. Naval Section Base, Tetron Bay, Trinidad, B.W.I., to U.S. Naval Operating Facility, Recife, (Pernambuco) Brazil, as escort to southbound convoy in accordance with secret operational order TJ-15. Ships in company: U.S.S. PENNIWELL (DE 175), U.S.S. CARNELIAN (PYc19), U.S.S. PC-493, U.S.S. PC-575. Commander Escorts in U.S.S. PENNIWELL (DE 175).' On 29 December, moored at Teteran Bay, Trinidad, she conducted short-range battle practice and machine-gun practice in the Gulf of Paria in company with PC-493 (10 rounds 3"/50, 38 rounds 40mm expended); a planned ASW exercise with a 'tame submarine' was cancelled when the submarine could not dive.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-12
- Population
- Crew of PC-574; TG 42.2 escort group; Trinidad section-base population
- Limitations
- Primary operational record for December 1943; documents the Trinidad-Recife convoy shuttle and Task Group 42.2/Fourth Fleet assignment - no asbestos or material content. 'Tame submarine' identifies a friendly training boat, not an enemy contact.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-07
-
[9]NARA, 'PC-574, 7/2/42-5/15/46', NAID 192660660, RG 24 Records of the Bureau of Naval Personnel, series 'Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities' (NAID 594996); Ancestry-partnership scans (290 images) [other_primary]
- Locator
- NAID 192660660 (RG 24 muster-roll file unit for PC-574)
- Finding type
- historical_record
- Finding
- The hull's muster rolls survive and are digitized for the full commissioned span 2 July 1942 - 15 May 1946: quarterly personnel lists naming every officer and enlisted man aboard by period - the authoritative crew roster for this hull across Atlantic, Brazilian, and Pacific service.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- All officers and enlisted who served aboard PC-574, 1942-1946
- Limitations
- Archival lead: establishes that full crew documentation exists, not any individual's presence without name-level extraction (not performed - 290 images). Contains no asbestos or material content. Ancestry-partnership scans are catalog-linked via NARA; paywalled viewing may apply outside NARA terminals.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-08
-
[10]Pritzker Military Museum & Library, Holt Oral History Program: Donald Miller, SO3 (sonar operator, USS PC-574) - recorded 10 March 2016; transcript PDF at pritzkermilitary.org [museum_official]
- Locator
- Pritzker PMML Holt Oral History page and Donald Miller transcript PDF (New Guinea/Panama/7th Fleet/Manus sections)
- Finding type
- historical_record
- Finding
- First-person crew narrative for this hull: Miller joined PC-574 in Miami during the Brazil period; recounts Recife/Trinidad/Norfolk convoy cycles (a man lost overboard in a storm; a burial party at Belem). On the Pacific transfer: 'we were transferred from Norfolk into the 7th fleet and went through the canal' escorting 'a big repair ship' (Galapagos detour for a medical case), then 'the Admiralty Islands, the main island, of which was called Manus island' and 'New Guinea, Halandia [Hollandia]'; a Japanese air raid on a floating dry dock near Manus; Philippines convoy duty ('we were headed to the Philippines'); a Leyte Gulf sonar contact 'early summer '45'; and the postwar return to Pearl Harbor via Eniwetok and Kwajalein in heavy weather with engine casualties. Armament detail: depth charges plus bow 'mousetrap' rails.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1946
- Population
- PC-574 crew, 1943-46; embarked passengers/patients on escorted vessels
- Limitations
- Oral history recorded 70+ years after service: corroborates the NHHC Seventh Fleet transfer and supplies ports/operating pattern, but dates and specifics are recollection-level - treated as context, not as a verified operational log. Miller describes the ship's mission only; no asbestos or material content. 'Halandia' is the transcript's rendering of Hollandia.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-09
-
[11]The Evening Sun (NY), obituary of Thomas V. Ciarrocchi (d. 2007); Houma Today (LA), 'You didn't have to be in combat to be considered a veteran' (16 Nov 2008, on veteran Landwher) [reputable_press]
- Locator
- evesun.com/obituary/752 (Ciarrocchi service paragraph); houmatoday.com profile (Landwher service paragraph)
- Finding type
- historical_record
- Finding
- Two independent veteran accounts naming this hull: Ciarrocchi 'was then assigned to the PC 574 boat convoying tankers from Recife, Brazil to Dakar, Africa. Eventually, he served in the New Guinea area' (Evening Sun obituary); Landwher 'served aboard the PC 574 in the Pacific' (Houma Today profile). Corroborates the Brazil convoy beat (extending to Dakar) and the Pacific/New Guinea service phase.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1945
- Population
- PC-574 crew (Ciarrocchi, Landwher) - individual service accounts
- Limitations
- Reputable press but family-supplied obituary/profile detail; corroborates operating areas only - no dates, no official record, no asbestos content. The Dakar leg is press-sourced only (no deck-log installment for those months located).
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-10
-
[12]uboat.net Allied Warships, USS PC-574 (PC-574) - construction data, commanding-officer succession (secondary database compilation) [other_primary]
- Locator
- uboat.net/allies/warships/8551.html data table and commands section
- Finding type
- vessel_history
- Finding
- Secondary-database record for this hull: ordered 1 April 1941; laid down 30 December 1941 by Dravo Corp., Pittsburgh, PA; launched 30 March 1942; commissioned 2 July 1942; end service 15 May 1946 (decommissioned); 'Sold in December 1946' (conflicts with NavSource November - see gaps). Commanding officers: Lt. Leonard Scott Bailey USNR (2 Jul 1942 - early/mid 1943), Thomas Nesbitt MacIntyre USNR (early/mid 1943 - late 1943), Andrew M. Swarthout USNR (late 1943 - mid 1945), Lt. Ralph L. Biggs USNR (mid - late 1945).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- PC-574 officers and crew 1942-45
- Limitations
- Secondary compilation; CO dates are approximate ranges ('early/mid43' style), not exact turnover dates - NavSource's first-CO entry verifies Bailey only. The December 1946 sale month conflicts with NavSource's November 1946 - carried in gaps, unresolved. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-11
-
[13]Era inference built on: NavSource specifications (diesel plant, no steam); PC-461 class design parameters (twin-screw diesel patrol craft, steel hull, 1941-42 construction); GAO HRD-80-2 (Navy asbestos insulation era through early 1970s, see ev-13) [other_primary]
- Locator
- NavSource 12/010574.htm specifications; PC-461 class design summary (uboat.net/NavSource class text); GAO HRD-80-2
- Finding type
- asbestos_application
- Finding
- A steel-hulled diesel patrol craft built December 1941-July 1942 sits squarely inside the Navy's documented asbestos-use era. Era-standard small-combatant applications aboard a vessel of this type and period were engine and exhaust-system insulation, machinery lagging, gaskets and valve packing, electrical insulation, and interior finishes/deck coverings within the confined 173-foot hull volume. As a diesel-powered craft she carried no steam plant - the boiler/turbine lagging pathway of larger combatants does not apply.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- Dravo construction trades (1941-42); crew (1942-46); maintenance personnel at operating bases (Trinidad, Recife, Manus, Pearl Harbor); 1946 civilian buyer/salvage population
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or ACM disclosure located for PC-574. Names era-standard applications, not confirmed installed materials; no quantity; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-12
-
[14]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 entire construction (1941-42) and service era (1942-46).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403 - standing defect from BATCH-01); content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-13
-
[15]ShipbuildingHistory (Colton) Dravo yard build tables: Pittsburgh/Neville Island 'dravoboats.htm' and Wilmington 'dravow.htm' - PC-574 row appears in BOTH tables (Pittsburgh: 'PC 574, Sub Chaser, 284 t., del. 2-Jul-42, Sold 1946'; Wilmington: 'PC 574, Patrol Craft, 463 t./173 ft., del. 2-Jul-42, Sold 1946') [other_primary]
- Locator
- dravow.htm PC block (PC 495, 574-577 rows); dravoboats.htm PC block (PC 490-495, 573-577, 592-595 rows); sixtant.net PC-574 tag page
- Finding type
- historical_record
- Finding
- CONFLICT DOCUMENTED: the build yard for this hull is unresolved across sources. Wilmington, DE is asserted by the NHHC Online Library caption (ev-02) and by shipbuildinghistory's Dravo Wilmington table; Pittsburgh, PA is asserted by NavSource's per-hull attribution, uboat.net, and shipbuildinghistory's own Dravo Pittsburgh table - the same hull appears in both yard lists of the same reference site. NavSource's per-hull pattern (PC-573/-574/-575/-576 'Pittsburgh', PC-577 'Wilmington') implies a yard-level source differentiating hulls within the block; NHHC's caption is the only official-source voice for Wilmington. Pittsburgh is carried as builder_location pending resolution; neither attribution is treated as proven.
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1942
- Population
- Dravo yard workers, Pittsburgh Neville Island and/or Wilmington - yard of record unresolved
- Limitations
- Documents a genuine source conflict rather than resolving it. ShipbuildingHistory is a careful secondary compilation whose own two tables conflict; NavSource differentiates per-hull but is itself secondary. Resolution requires Dravo contract/yard records or a BuShips 'Ships' Data' entry - open archival lead. Separately: sixtant.net's PC-574 page prints 'Wilmington, Delaware' plus erroneous specs (295 t., 174', 28' beam, 8' draft, complement 58, 'two 2,880bhp' engines - the combined figure misprinted as per-engine); sixtant content derives largely from NavSource and is not independently cited.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-14
-
[16]Batch-7949 search ledger (this record): NavSource; NHHC photo/Online Library; NARA RG 38 deck logs (4 digitized installments) and RG 24 muster rolls; official Navy SoLant administrative history (HyperWar); shipbuildinghistory Dravo tables; uboat.net; Pritzker PMML oral history; veteran obituaries; CourtListener (see sl rows); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-pc-574-pc574-01 through -13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming USS PC-574 was found in the public sources searched. Secondary web sweeps surfaced no qualifying case; the only 'asbestos aboard' material is law-firm marketing content (dravo/shipyard listicles and mesothelioma-website pages asserting asbestos without primary sourcing) - excluded by source policy.
- 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. CAVEAT: CourtListener could not be queried this session - the authenticated helper returned the fleet-pacing stand-down message on every attempt (hourly/burst budget consumed across the fleet, ~50 min of spaced retries) - logged as blocked in search_ledger, not as a negative result. The ship's actual material state is undocumented; deck logs and muster rolls survive but are operational/personnel records, not material records. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-574-pc574-15