Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]research packet 879-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (thin
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Limitations
- qualifier: VERIFIED (thin
- Evidence ID
- uss-pc-1241-pc1241-pkt-879-packet-md
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[2]NavSource Online: Submarine Chaser Photo Archive, PC-1241 page (compiled vessel record, specifications block, photographic record; page verified live 2026-10-03) [other_primary]
- Locator
- NavSource PC-1241 page, specifications block + service chronology + photo captions
- Finding type
- vessel_history
- Finding
- Compiled record for this hull: PC-461-class submarine chaser laid down 4 September 1942 by the Nashville Bridge Co., Nashville, TN; launched 24 December 1942; commissioned USS PC-1241 on 28 May 1943; transferred to the Philippines 2 July 1948 and named RPS Nueva Ecija (PS 25); Naval Vessel Register of 1 January 1949 lists plan for transfer to the Philippines as January 1948; reclassified C-25; sold October 1958; fate unknown. 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 in/50 dual-purpose mount, one 40 mm, three 20 mm, two rocket launchers, four depth-charge projectors, two depth-charge tracks; propulsion two 1,440 bhp General Motors 16-258S diesels, Farrel-Birmingham single reduction gear, two shafts. Photographic record places the ship at Burwood, LA (lower Mississippi, Gulf Sea Frontier). Page states 'no DANFS history available for PC-1241.'
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1958 (U.S. record); 1948-1970s (Philippine service)
- Population
- Nashville Bridge construction trades (1942-43); wartime and postwar crew (complement 65); Philippine Navy crew 1948-1970s
- Limitations
- NavSource is a volunteer-compiled secondary archive citing Navy records - the de facto standard source for minor combatants with no DANFS entry, but not itself an official publication. Establishes construction, service milestones, and disposal; contains no asbestos or materials information whatsoever.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1241-01
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[3]uboat.net Allied Warships, USS PC-1241 (PC-1241) page - build data, commanding officers, notable events citing USS Hawkbill first war patrol report and COMGULFSEAFRON war diary August 1944 [other_primary]
- Locator
- uboat.net PC-1241 warship page, commands table + notable events section
- Finding type
- vessel_history
- Finding
- Wartime service record for this hull, from primary citations: on 16 June 1944 PC-1241 (Lt. E.E. Weingarden, USNR) escorted submarine USS Hawkbill departing New Orleans for the Panama Canal Zone, staying with her until the morning of 17 June (source: USS Hawkbill report of first war patrol); on 31 August 1944 PC-1241 escorted submarine USS Kete departing New Orleans, providing escort to point 'C' (21 deg 01 min N, 83 deg 30 min W) before Kete proceeded unescorted (source: COMGULFSEAFRON war diary, August 1944). Commanding officers listed: Lt. Elmore E. Weingarden USNR (28 May 1943 - late 1944); T.F. Casey USNR (late 1944 - mid 1945); Donald A. Lee USNR (mid 1945 - late 1945). Ordered 27 February 1942.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1945
- Population
- Wartime crew, Gulf Sea Frontier escort duty 1943-1945
- Limitations
- uboat.net is a long-established secondary research compilation; the events cited quote primary records (war patrol report, Gulf Sea Frontier war diary) but the underlying documents were not directly inspected. uboat.net's 'transferred to the Philippines in October 1958' conflates the October 1958 sale with the 2 July 1948 transfer documented by NavSource and the c.1953 Philippine Navy photo - the 1948 date is carried (see gaps). Establishes Gulf-area escort duty only; no asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1241-02
-
[4]NARA Catalog, file unit 'PC-1241, 5/28/43-5/1/46' (NAID 192145829), RG 24 Records of the Bureau of Naval Personnel, series Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities - 311 digitized images [other_primary]
- Locator
- NARA Catalog NAID 192145829 (311 images, image set via Ancestry partnership)
- Finding type
- historical_record
- Finding
- Digitized primary crew records exist for this hull: the complete muster rolls of USS PC-1241 covering 28 May 1943 (commissioning) through 1 May 1946 are digitized at NARA (311 images, scanned via the Ancestry partnership, transcription not started). Muster rolls name every crew member aboard by reporting period - the population record for any future ship-specific exposure research or claim verification.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1946
- Population
- All hands aboard PC-1241, 1943-05-28 through 1946-05-01 (roster-level)
- Limitations
- Archival lead only: the images were located but not transcribed or reviewed page-by-page. Muster rolls document who served aboard, not materials aboard - they contain no asbestos, insulation, or occupational-hazard information. The series ends May 1946; rolls for 1946-1948 (transfer) were not located in this search.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1241-03
-
[5]The Maritime Review (Philippines), 'Our Submarine Chasers' - history of the ex-USN submarine chasers in Philippine service [reputable_press]
- Locator
- maritimereview.ph 'Our Submarine Chasers' article body; navypedia.org Negros Oriental-class page (C25/PS25 row)
- Finding type
- vessel_history
- Finding
- Philippine-service corroboration: RPS Nueva Ecija (PS-25) is listed among the ex-USN submarine chasers commissioned into the Philippine Naval Patrol's Offshore Patrol on 02-July-1948, consistent with NavSource's transfer date; the same source reports the earlier ships of her group 'bowed out of service during the late 1960s' - navypedia dates Nueva Ecija's striking to 1977.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1948-1977
- Population
- Philippine Naval Patrol / Philippine Navy crew 1948-1970s
- Limitations
- Philippine maritime trade publication and a secondary fleet database - corroborative context for the post-transfer record, not official Philippine Navy documentation. Internal tensions exist across secondary sources on her final disposition (Maritime Review 'late 1960s' generalization vs. navypedia 'stricken 1977'); the sale (October 1958) and 'fate unknown' close per NavSource are the carried facts. No asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1241-04
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[6]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2, Highlights section (full report PDF: gao.gov/assets/hrd-80-2.pdf)
- Finding type
- gov_survey
- Finding
- GAO reviewed Navy efforts to protect workers from asbestos exposure (fieldwork at Long Beach and Norfolk Naval Shipyards) and documented that asbestos insulation was used extensively in Navy ships, that the Navy's 1975 policy removed only damaged insulation or insulation requiring removal for repairs, and that substitution with nonasbestos materials did not begin until the early 1970s - spanning this hull's construction (1942-43) and entire U.S. service era (1943-48).
- 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. Fieldwork yards were Long Beach and Norfolk naval shipyards - not Nashville Bridge Co. Product page verified via firecrawl 2026-10-03 (direct fetch returns HTTP 403 to automated clients).
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1241-05
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[7]Era inference built on: NavSource specifications (2 x GM 16-258S diesels, Farrel-Birmingham gear, 2 shafts - no steam plant); shipbuildinghistory.com Nashville Bridge yard table (PC-1241 construction record); GAO HRD-80-2 Navy-wide asbestos-use era (see ev-05) [other_primary]
- Locator
- NavSource PC-1241 specifications block; shipbuildinghistory.com Nashville Bridge boats table (PC-1241 row); GAO HRD-80-2
- Finding type
- asbestos_application
- Finding
- A steel-hulled diesel submarine chaser built 1942-43 sits inside the documented Navy asbestos-use era. As a diesel vessel she carried no boilers or steam plant - the boiler/turbine lagging pathway of steam vessels does not apply. Era-standard applications aboard a patrol craft of this type and period were engine and diesel-exhaust insulation/lagging, gaskets, valve and flange packing, electrical insulation, and compartment insulation where fitted, in a small 173-ft hull with confined below-deck machinery spaces.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1970s
- Population
- Nashville Bridge construction trades (1942-43); crew (1943-48 USN, 1948-1970s Philippine); scrapping/disposal workers
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, build specification, or work package located for PC-1241. 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-pc-1241-06
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[8]Batch-7737 search ledger (this record): NavSource hull page; uboat.net warship record; NARA Catalog muster rolls; Maritime Review Philippine-service record; NHHC DANFS URL check; NVR ship-detail check; GAO HRD-80-2; CourtListener API v4 exact-name and hull-number searches (opinion + docket) [other_primary]
- Locator
- search_ledger rows sl-uss-pc-1241-01 through sl-uss-pc-1241-09
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed case naming PC-1241 was found in the public sources searched (see search_ledger). NHHC has no DANFS entry for this hull (canonical URL pattern returns HTTP 404, confirmed 2026-10-03; NavSource states 'no DANFS history available'); the hull does not appear on the current Naval Vessel Register. Secondary-web 'asbestos' hits are law-firm marketing content only - 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 - era-consistent inference (ev-06) stands. Muster rolls establish the crew population but contain no materials data; deck logs and any build-specification files (NARA RG 19/RG 24 leads) were not retrieved. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1241-07