Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]NavSource Online, Submarine Chaser Photo Archive, PC-783 record, live page verified 2026-10-03. [other_primary]
- Locator
- PC-783 record, timeline block + specifications block + 'no DANFS History currently available' note
- Finding type
- vessel_history
- Finding
- NavSource record for this hull: PC-461-class submarine chaser laid down 7 December 1942 at Commercial Iron Works, Portland, Oregon; launched 13 January 1943; commissioned 14 August 1943; struck from the Naval Register 13 December 1946; transferred to the War Shipping Administration in June 1948; fate unknown. Call sign Nan-Uncle-Tare-Jig. Specifications: displacement 450 t.; length 173'8"; beam 23'; draft 10'10"; speed 20.2 kts.; complement 65; armament one 3"/50 dual-purpose mount, one 40mm mount, five 20mm guns, two rocket launchers, two depth-charge tracks; propulsion two 1,440-bhp Hooven-Owen-Rentschler R-99DA diesel engines with Westinghouse single reduction gear on two shafts. NavSource states explicitly that no DANFS history exists for PC-783.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Commercial Iron Works construction trades 1942-43; wartime crew (complement 65)
- Limitations
- NavSource is a volunteer-maintained archival photo index compiled from Navy records, not a Navy adjudicative or registry document; its dates and specifications generally track official sources but it does not itself establish asbestos content, individual exposure, or the sale/transfer instrument. No decommissioning date is given on the page.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-783-pc783-01
-
[2]uboat.net Allied Warships of WWII, USS PC-783 (PC-783) record (compiled by Guomundur Helgason from war-diaries and patrol-report data), live page verified 2026-10-03. [other_primary]
- Locator
- PC-783 warship record, data table + 'Commands listed' + 'Notable events' (Dec 1943 serials)
- Finding type
- vessel_history
- Finding
- Secondary-source timeline for this hull: ordered 27 February 1942; decommissioned 4 March 1946. Commanding officers listed: W. W. White, USNR (14 Aug 1943 - late 1943); Lt. Howard E. Ellis, USNR (late 1943 - mid 1944); L. S. Jordan, USNR (mid 1944 - early 1945); J. M. Milne, USNR (early 1945 - mid 1945); Lt. (jg.) Donald F. Bandle, USNR (mid 1945 - 4 Mar 1946). Between 7 and 20 December 1943, PC-783 (Lt. H. E. Ellis) conducted day and night exercises off San Diego with the submarine USS Tang (SS-306, T/Lt.Cdr. R. H. O'Kane) and, for several serials, USS Kennison - drawn from Tang's war-patrol reporting.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Wartime crew under five successive USNR commanding officers
- Limitations
- Secondary compilation, not a primary Navy record; the order date, 4 March 1946 decommissioning, and commanding-officer roster rest on this single source and are not independently verified here. The exercise entries derive from USS Tang's patrol report and record Tang's activity, not PC-783's own log.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-783-pc783-02
-
[3]Robert J. Cressman, The Official Chronology of the U.S. Navy in World War II (Naval Historical Center / NHHC), 1944 chapter, 27 August 1944 entry; verbatim HyperWar/ibiblio transcription. [other_primary]
- Locator
- USN-Chron-1944, '27 August, Sun.' Pacific section
- Finding type
- historical_record
- Finding
- The official Navy chronology records for 27 August 1944: 'High speed minesweeper Boggs (DMS-3) and submarine chaser PC-783 are damaged in collision, San Diego, California.' Documents this hull's presence and damage in a collision at San Diego on that date. The 1943, 1945, and 1946 chronology chapters contain no PC-783 entries.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-08-27
- Population
- PC-783 and Boggs (DMS-3) crews; repair facilities at San Diego (unspecified)
- Limitations
- A chronology line records that the collision occurred and both vessels were damaged; it does not state damage extent, repair location or scope, casualties, or any material content - no asbestos implication should be drawn. Confirms the hull was operating out of San Diego as of August 1944.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-783-pc783-03
-
[4]National Archives and Records Administration, Special List No. 44, by Ship Number, PC-783 line, live PDF verified 2026-10-03. [other_primary]
- Locator
- SL-44 ship-number PDF, p. 73, PC-783 line
- Finding type
- historical_record
- Finding
- NARA's deck-log finding aid lists PC-783 with log coverage 14 August 1943 through 30 June 1945 - essentially her full commissioned career from commissioning date through the end of hostilities. The underlying deck logs are archival leads not retrieved for this record.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-08-14 to 1945-06-30
- Population
- Navy deck-log records; wartime crew
- Limitations
- These are log-coverage dates from a finding aid, not the log contents; they are not inferred commissioning or decommissioning dates and do not prove continuous operation. No asbestos statement, exposure account, or material inventory is inferred from the finding aid alone.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-783-pc783-04
-
[5]ShipbuildingHistory.com (Tim Colton), Commercial Iron Works, Portland OR, yard construction table, live page verified 2026-10-03. [other_primary]
- Locator
- Commercial Iron Works yard table, hull #56 (PC 783) row; yard history preamble
- Finding type
- vessel_history
- Finding
- The builder's-yard construction table lists PC-783 as Commercial Iron Works yard hull number 56, a 173-foot Navy sub chaser delivered 14 August 1943, disposition 'Sold 1948' - corroborating the commissioned date and identifying the disposal channel as a 1948 sale. The same table records her Commercial Iron Works sister PCs receiving town names in 1956 (PC-776 Pikeville, PC-777 Waynesburg, PC-778 Gallipolis, PC-779 Mechanicsburg, PC-780 Maynard, PC-781 Metuchen, PC-782 Glenolden, PC-785 Frostburg) - the reserve-fleet naming wave that PC-783, already sold, never joined. The yard-history preamble records that the Portland yard (founded November 1916, 30-acre site south of the Ross Island Bridge) built about 188 vessels during WWII and was sold to Zidell Marine in 1946 for use as a ship-dismantling facility.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Commercial Iron Works workforce (Portland, 1942-43 build window)
- Limitations
- A maritime-historian yard table, not a contract or disposal instrument; 'Sold 1948' does not name the buyer, sale price, or later fate. Yard-level production facts are context for the builder, not asbestos evidence for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-783-pc783-05
-
[6]Era inference built on: NavSource specifications block for this hull (PC-461 class, steel hull, twin H-O-R R-99DA diesels, no steam plant); PC-461-class design data (the wartime-standard 173-foot steel-hulled diesel sub chasers built 1941-44, more than 340 units - class counts vary by source); GAO HRD-80-2 program-level finding (see ev-uss-pc-783-pc783-07). [other_primary]
- Locator
- NavSource PC-783 specifications; PC-461 class design record; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A steel-hulled diesel-powered patrol craft built 1942-43 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a small diesel combatant of this type and period were thermal insulation and diesel-exhaust lagging in machinery spaces, gaskets, valve packing, and electrical insulation. She carried no boilers or steam plant, so the boiler/turbine lagging pathway of steam vessels does not apply.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Commercial Iron Works construction trades (1942-43); crew (1943-46)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for PC-783. Names era-standard applications, not confirmed installed materials. No quantity, no manufacturer attribution for this hull. Does not establish that asbestos was or was not present aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-783-pc783-06
-
[7]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 (1942-43), service era (1943-46), and disposal window (1948).
- 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) - content via product-page description, consistent with prior batch treatment.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-783-pc783-07
-
[8]Batch-8156 search ledger (this record): NavSource; uboat.net; Cressman official USN WWII chronology via HyperWar; NARA Special List 44; ShipbuildingHistory yard table; ww2pcsa.org; live-web litigation/asbestos sweep; CourtListener authenticated helper (see ledger for per-query status). [other_primary]
- Locator
- search_ledger rows sl-uss-pc-783-pc783-01 through -11
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming PC-783 was found in the public sources searched. No DANFS entry exists for this hull. Live-web sweeps surfaced only law-firm marketing content asserting asbestos aboard patrol craft generally - excluded by source policy. CAVEAT: all four required CourtListener base queries (exact-name opinion/docket, hull-number opinion/docket) were attempted and held by the authenticated fleet pacing limiter on every spaced attempt this session; logged as blocked in the search_ledger, NOT as a negative litigation result.
- 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 - and the litigation repository search is a genuine open gap (blocked, not run to completion). Deck logs (SL-44 coverage located) and the 1948 sale/disposal instrument are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-783-pc783-08