Evidence
9 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-9).
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[1]research packet 939-packet.md (5 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-788-pc788-pkt-939-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, PC-788 (12/010788) - build milestones, specifications, disposal note (verified live 2026-10-03) [other_primary]
- Locator
- NavSource 12/010788.htm header timeline block and specifications block
- Finding type
- vessel_history
- Finding
- NavSource record for this hull: PC-461 Class Submarine Chaser; laid down 18 January 1943 at Commercial Iron Works, Portland, OR; launched 5 March 1943; commissioned 15 February 1944; transferred to the War Shipping Administration in July 1948; 'Fate unknown.' Specifications: displacement 450 t.; length 173'8"; beam 23'; draft 10'10"; speed 20.2 kts.; complement 65; armament one 3"/50 dual-purpose gun mount, one 40mm gun mount, five 20mm guns, two rocket launchers, two depth charge tracks; propulsion two 1,440bhp Hooven-Owen-Rentschler R-99DA diesel engines, Westinghouse single reduction gear, two shafts. Call sign Nan-Yoke-Able-Victor. Page states: 'There is no DANFS History currently available for PC-788.'
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1948
- Population
- Commercial Iron Works construction trades (1943-44); wartime crew (design complement 65, 1944-46)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestones generally track official sources but it gives no decommissioning or striking date for this hull and no station assignment. Contains no asbestos or material content. 'Fate unknown' leaves post-1948 disposition undocumented.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-788-pc788-01
-
[3]uboat.net Allied Warships file, USS PC-788 (PC-788) - order date, decommissioning date, commanding officers (verified live 2026-10-03) [other_primary]
- Locator
- uboat.net warship file 8617 (data table + commands section)
- Finding type
- vessel_history
- Finding
- uboat.net warship file for this hull: patrol craft of the PC-461 class; built by Commercial Iron Works (Portland, Oregon); ordered 27 February 1942; laid down 18 January 1943; launched 5 March 1943; commissioned 15 February 1944; 'Decommissioned on 14 June 1946.' Commanding officers listed (WWII window only): Lt. W. D. Okerson, USNR (15 Feb 1944 - mid/late 1944); J. H. Barrett, Jr., USNR (mid/late 1944 - mid 1945); Carlo T. Guidoboni, USNR (mid 1945 - late 1945). No events are listed for this hull.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Wartime crew (1944-46)
- Limitations
- Secondary compilation; the 14 June 1946 decommissioning date appears in no other source checked and its location is undocumented - carried with hedge. 'No events listed' means no documented combat/convoy events in that source, not that none occurred. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-788-pc788-02
-
[4]shipbuildinghistory.com, Commercial Iron Works (Portland, OR) construction list - yard hull 61, 'Sold 1948' (verified live 2026-10-03) [other_primary]
- Locator
- shipbuildinghistory.com Commercial Iron Works table, row 61 (PC 788)
- Finding type
- vessel_history
- Finding
- Yard construction list for this hull's builder: Commercial Iron Works yard hull number 61 was PC-788, US Navy sub chaser, 463 tons, 173 feet, delivered/commissioned 15 February 1944, disposition 'Sold 1948' - corroborating the NavSource build milestones and adding the builder's hull number and the sale disposition after War Shipping Administration custody.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1948
- Population
- Commercial Iron Works construction trades (1943-44)
- Limitations
- Secondary yard-history compilation; 'Sold 1948' does not identify buyer, price, or subsequent use/scrapping - post-sale fate remains undocumented. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-788-pc788-03
-
[5]NHHC, U.S. Pacific Fleet Organization, 1 May 1945 (patrol-craft section, fetched and checked 2026-10-03) [nhhc_danfs]
- Locator
- US Pacific Fleet Organization 1 May 1945, patrol craft (PC) listings under fleet force sections
- Finding type
- historical_record
- Finding
- In the NHHC-published U.S. Pacific Fleet Organization of 1 May 1945, this hull does NOT appear: the patrol-craft block lists PC-776, PC-777, PC-779, then resumes at PC-800 and continues through the PC-800/1100 series with named commanding officers - PC-780 through PC-799 are absent, PC-788 among them. Consistent with an assignment outside the Pacific Fleet (e.g., stateside Sea Frontier duty) at that date, and consistent with the Treasure Island source of her surviving photograph.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-05-01
- Limitations
- An absence observation, not a station finding: the document does not state where PC-788 was, only that she was not listed under CinCPac on that date - she could also have been in overhaul, transit, or another command. Does not document materials or conditions aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-788-pc788-04
-
[6]NavSource photo credit: PC-788 photograph from 'The Naval History of Treasure Island' (U.S. Naval Training and Distribution Center, San Francisco, 1946; volume verified at archive.org) [other_primary]
- Locator
- NavSource 12/010788.htm image table (photo 'from The Naval History of Treasure Island', credit EMC(SW) Brian Kroenung); archive.org item navalhistoryoftr00unitrich
- Finding type
- historical_record
- Finding
- The NavSource page for this hull displays a period photograph credited to 'The Naval History of Treasure Island' - the 1946 official history of the San Francisco naval station. A period photo of this hull carried in that volume is consistent with a Treasure Island / 12th Naval District association during or shortly after the war. The volume's searchable OCR text (fetched 2026-10-03) contains no 'PC-788' string - the image is a photo plate, so the photo's caption context (if any) is not yet extracted.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-1946 (photo window, approximate)
- Limitations
- Archival lead only: a photo's presence in the Treasure Island history does not itself document the hull's station, dates of presence, or activities there; the photo has not been independently located within the volume (923 MB scan; OCR text lacks the hull number). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-788-pc788-05
-
[7]Era inference built on: NavSource/uboat.net specifications (twin Hooven-Owen-Rentschler diesel plant, no boilers); PC-461-class description (341 steel-hulled chasers built 1940-44; Commercial Iron Works built 43); GAO HRD-80-2 Navy asbestos-era documentation (see ev-07) [other_primary]
- Locator
- NavSource specifications block; PC-461-class article (builders/summary); GAO HRD-80-2 (ev-07)
- Finding type
- asbestos_application
- Finding
- A steel-hulled PC-461-class submarine chaser built 1943-44 sits inside the Navy's documented asbestos-use era. Diesel plant - no boilers or steam turbines, so the boiler/turbine lagging pathway does not apply; era-standard asbestos applications aboard a patrol craft of this type and period were diesel-exhaust lagging, machinery insulation, gaskets, valve packing, deck coverings, and compartment insulation in the hull's confined volume.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1943-1948
- Population
- Commercial Iron Works construction trades (1943-44); wartime crew (1944-46); disposal/scrapping trades (1948, undocumented)
- Limitations
- Class/era inference only - no hull-specific insulation schedule, material list, survey, or work package located for PC-788. Names era-standard applications, not confirmed installed materials. No quantity; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-788-pc788-06
-
[8]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (highlights; published 1979-10-18)
- Finding type
- gov_survey
- Finding
- GAO's report documents asbestos insulation aboard Navy ships in the postwar era: the Navy's 1975 policy was to remove and replace with nonasbestos materials only insulation that was damaged or had to be removed for repairs, modified in 1979 to include selectively replacing asbestos insulation in high-maintenance areas - establishing that asbestos insulation remained aboard Navy ships decades after this hull's 1948 disposal, consistent with the Navy asbestos-use era that spans her 1943-44 construction.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (report); era coverage includes 1943-46
- Population
- Navy shipyard workers; ship crews (program review)
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. GAO reviewed asbestos conditions at Long Beach and Norfolk Naval Shipyards - PC-788 is not named and her builder is not covered. Product page verified live 2026-10-03; full 26-page PDF not extracted this session.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-788-pc788-07
-
[9]Batch-8161 search ledger (this record): NavSource 12/010788; uboat.net warship file 8617; shipbuildinghistory.com Commercial Iron Works list; NHHC Pacific Fleet Org 1 May 1945; archive.org Treasure Island history; NHHC DANFS (no entry); NARA catalog keyword search; NVR; CourtListener (see ledger status); secondary web sweep [other_primary]
- Locator
- search_ledger rows sl-uss-pc-788-pc788-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, builder material list, or docketed case naming PC-788 was found in the public sources searched. No DANFS entry exists for this unnamed hull (confirmed via NavSource note, NHHC site search, and the losthistory.net DANFS-transcription patrol-craft index where sisters PC-776/780/782 have entries but PC-788 does not).
- 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 - it establishes only that no public ship-specific record was found in the sources searched. NARA RG 24 deck logs and any WSA/Maritime Commission disposal file remain undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-788-pc788-08