Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
-
[1]research packet 941-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-800-pc800-pkt-941-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, PC-800 - construction milestones, specifications, commanding officers, disposition (live fetch verified 2026-10-03) [other_primary]
- Locator
- NavSource 12/010800.htm header block, specifications block, christening photo caption, Commanding Officers table
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 31 July 1943 at Commercial Iron Works, Portland, OR; launched 28 August 1943 (christening by sponsor Miss Beatrice Greenwalt, launch-photo caption); commissioned 23 September 1944; 'Transferred to the War Shipping Administration in April 1948. Fate unknown.' Spec block: 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 1,440bhp Hooven-Owen-Rentschler R-99DA diesel engines (serial nos. 7365, 7366), Westinghouse single reduction gear, two shafts. Commanding officers: LT B. E. Rose Jr., USNR (1945); LTJG William Froug, USNR (1945-1946). Call sign Nan-Uncle-Sugar-Yoke. Page states: 'There is no DANFS History currently available for PC-800.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1948
- Population
- Commercial Iron Works construction trades (1943-44); crew (1944-48); wartime complement ~65
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track Navy registers but no commissioning location detail is given and the 13-month launch-to-commissioning gap is unexplained. The 450t displacement conflicts with the DANFS class figure of 280t (light vs full load; see gaps). Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-01
-
[3]MARAD Vessel History Database, PC-800 (record id 10254) - official U.S. Maritime Commission vessel status card 5I9_01.png (card no. 6754) [other_primary]
- Locator
- vesselhistory.marad.dot.gov Detail/10254, Status Cards tab, card image https://vesselhistory.marad.dot.gov/cards/5I9_01.png
- Finding type
- historical_record
- Finding
- Primary-source federal record for this hull's exit from Navy custody: the U.S. Maritime Commission vessel status card for 'PC-800', type 'SUBMARINE CHASER', basis to U.S.M.C. 'Navy Surplus', records a single entry - 'Returned by the U.S. Navy as Surplus', delivered 4-19-48. MARAD detail page lists the vessel as 'Naval Combatant / Naval Combatant Other' with fate 'Returned - No Further Info': the card documents the surplus return and nothing further - no sale, scrapping, or foreign-transfer entry follows. Consistent with NavSource's 'Transferred to the War Shipping Administration in April 1948; fate unknown.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1948-04-19
- Population
- n/a - custody record
- Limitations
- Documents transfer of custody to the Maritime Commission (the War Shipping Administration's successor holding function) as surplus on 19 April 1948 only; it does not establish a decommissioning or stricken date, and 'No Further Info' means MARAD records do not show final disposition - scrapping, resale, or foreign transfer is unrecorded. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-02
-
[4]Navy and Marine Corps Awards Manual, NAVPERS 15,790 (Rev. 1953), Part IV 'Campaign and Service Medals', Section 2-16 Asiatic-Pacific Area - verbatim transcription via HyperWar/ibiblio (live fetch verified 2026-10-03) [other_primary]
- Locator
- Awards-IV-16.html ship table, 'PC 800:' entry (adjacent to PC 779 and PC 802 entries)
- Finding type
- historical_record
- Finding
- Official Department of the Navy award-eligibility list documents this hull's combat-theater presence: 'PC 800:' is credited with '17 Feb 45 - 4 Mar 45, P33-1' (Iwo Jima operation - Assault and occupation of Iwo Jima) and '1 May 45 - 30 Jun 45, P34-1' (Okinawa Gunto operation - Assault and occupation of Okinawa Gunto). Two Asiatic-Pacific campaign participations (battle-star windows) in 1945.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-02-17 to 1945-06-30
- Population
- crew aboard during Iwo Jima and Okinawa Gunto operations (Feb-Jun 1945)
- Limitations
- Campaign-eligibility listing only: establishes presence in the operation areas during the credited windows, not the ship's specific activities, engagements, or in-theater duration beyond those windows. The transcription is verbatim on HyperWar (ibiblio); no live NHHC-hosted copy of the 1953 manual's ship tables was located. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-03
-
[5]uboat.net Allied Warships of WWII, USS PC-800 (PC-800) patrol craft of the PC-461 class - builder, order date, milestones, wartime commanding officers (secondary compilation, live fetch verified 2026-10-03) [other_primary]
- Locator
- uboat.net warship page 8629 - identity table and Commands section
- Finding type
- vessel_history
- Finding
- Corroborating compilation for this hull: built by Commercial Iron Works (Portland, Oregon); ordered 27 February 1942; laid down 31 July 1943; launched 28 August 1943; commissioned 23 September 1944. Wartime commands listed: Bert E. Rose Jr., USNR (23 Sep 1944 - late/mid 1945); William W. Brown, USNR (mid/late 1945 - late 1945).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- crew (1944-45 wartime commands)
- Limitations
- Secondary specialist compilation - order date 27 Feb 1942 is not verified against a primary source and its CO roster differs from NavSource/Encyclopedia of Arkansas, which place Lt.(jg) William Froug in command in 1945-46 (see gaps). History and end-service fields are blank on this page. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-04
-
[6]Encyclopedia of Arkansas (Central Arkansas Library System), 'Froug, William (Bill)' - naval service and command of PC-800 (state-published scholarly encyclopedia, live fetch verified 2026-10-03) [other_primary]
- Locator
- Encyclopedia of Arkansas entry 7944, naval-service paragraph
- Finding type
- historical_record
- Finding
- Documented for this hull's command: William Froug (later Emmy-winning television writer/producer of Playhouse 90 and The Twilight Zone, and UCLA professor) graduated the University of Missouri in 1943, commissioned through the Navy V-7 program and trained at the Submarine Chaser Training Centers (Miami, San Francisco); assigned first to PC-1077 at Pearl Harbor for Central Pacific duty, and 'In 1945, he was given command of the PC-800 and became one of the youngest captains in the U.S. Navy.' NavSource's CO table independently lists LTJG William Froug, USNR, 1945-1946.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1946
- Population
- Lt.(jg) William Froug, USNR (CO 1945-46); PC-800 crew under his command
- Limitations
- Vessel-history fact only: establishes that a named individual held command aboard in 1945-46. It is NOT an exposure record - this record makes no asbestos claim for Froug or any individual. A biographical source; does not state where PC-800 was stationed under his command (the Pearl Harbor assignment attaches to his earlier PC-1077 duty).
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-05
-
[7]DANFS, Bluffton I (PC-461) - class-lead specifications and representative class service record (live NHHC page verified 2026-10-03) [nhhc_danfs]
- Locator
- DANFS Bluffton I (PC-461) spec block and service narrative; NavSource PC index 12/01idx.htm class-series description
- Finding type
- vessel_history
- Finding
- DANFS class context: class lead PC-461 spec block 'dp. 280; l. 173'8"; b. 23'0"; dr. 10'10"; s. 20.2 k.; cpl. 65; a. 2 3", 2 20mm., 2 .50-cal. mg., 2 .30-cal. mg., 2 dcp., 2 dct.; cl. PC-461.' Class service pattern documented for the lead ship: Caribbean/Panama Sea Frontier convoy escort, then Pacific Fleet service from New Caledonia and the Solomons through central Pacific convoy/patrol work to war's end - the same ASW-escort employment the type was built for. NavSource class index: 362 WWII-built 173-foot steel-hulled PCs in four series (PC-461-496, PC-542-627, PC-776-826, PC-1077-1265); PC-800 sits in the third series.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- class-level: construction and wartime crews across 362 hulls
- Limitations
- Class-lead entry, not this hull's history: PC-800 has no DANFS entry of its own (NavSource states none exists; candidate NHHC URLs returned 404 on 2026-10-03). Class spec block is the basis for dimensions/complement used for context only. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-06
-
[8]Era inference built on: NavSource specifications for this hull (two 1,440bhp Hooven-Owen-Rentschler R-99DA diesels, Westinghouse reduction gear, 2 shafts - a diesel plant, no steam); DANFS PC-461 class spec block; GAO HRD-80-2 Navy asbestos-era program documentation (see ev-08) [other_primary]
- Locator
- NavSource 12/010800.htm specifications; DANFS Bluffton (PC-461) spec block; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A steel-hulled patrol craft built 1943-44 in a U.S. yard for WWII service sits inside the documented Navy asbestos-use era; era-standard applications aboard a diesel patrol craft of this type and period were pipe and machinery insulation, diesel-exhaust lagging, gaskets, valve packing, electrical insulation, and asbestos-containing construction materials (deck covering, bulkhead joiner/panel materials). The diesel plant carries no boilers or turbines - the boiler/turbine lagging pathway of steam vessels does not apply, and the small crew (~65) means a far smaller exposed population than a capital ship.
- 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); crew ~65 (1944-48); any disposal/scrapping trades post-1948
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or litigation record located for PC-800. Names era-standard applications, not confirmed installed materials. No quantity, no manufacturer attribution. Diesel propulsion excludes boiler-room pathways but not exhaust/muffler lagging or construction materials.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-07
-
[9]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 (1943-44) and service era (1944-48).
- 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. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403, consistent with standing defect noted in BATCH-01 and BATCH-98) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-08
-
[10]Batch-8173 search ledger (this record): NavSource; MARAD vessel status card; NAVPERS 15,790 awards manual (HyperWar); uboat.net; Encyclopedia of Arkansas; DANFS class-lead entry; PCSA class page; GAO product page; CourtListener (paced/blocked); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-pc-800-pc800-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming PC-800 was found in the public sources searched. CAVEAT: CourtListener was queried only in part this session - exact-name '"USS PC-800"' opinion and docket searches both returned 0 results (authenticated); the hull-number '"PC-800"' pair could not run - the fleet-wide pacing limiter on the shared authenticated account returned 'budget momentarily spent' on repeated spaced attempts over ~75 minutes; logged as blocked in search_ledger, not as a negative result. Secondary web sweeps surfaced no qualifying case; the only 'asbestos aboard' material is law-firm marketing content (navyshipexposure.com class listicle) 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 - and the litigation repository search is a genuine open gap (paced, not run). Deck logs (RG 24), builder work packages, and any disposal-contract records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-800-pc800-09