USS Guymon (PCC-1177)

Evidence

11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).

1. [1]research packet 945-packet.md [other_primary]

   Finding type

   vessel_history

   Finding

   Identity packet verdict: VERIFIED

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Evidence ID

   uss-guymon-pcc1177-pkt-945-packet-md

2. [2]Naval History and Heritage Command, DANFS, 'Guymon' (PC-1177) - verified live [nhhc_danfs]

   Locator

   DANFS Guymon entry: specifications block + full service narrative

   Finding type

   vessel_history

   Finding

   NHHC DANFS entry 'Guymon' for PC-1177: 'A city in northwestern Oklahoma.' Specifications block: displacement 280; length 173'8"; beam 23'; draft 10'10"; speed 22 kt; complement 65; armament one 3", one 40 mm, five 20 mm, two rocket launchers, two depth-charge projectors, two depth-charge tracks; class PC-461. Laid down 24 July 1943 by Leathern [sic] D. Smith Shipbuilding Co., Sturgeon Bay, Wis.; launched 18 September 1943, sponsored by Mrs. Lucy Wagener; commissioned at New Orleans 20 December 1943, Lt. Edwin H. Kiefer in command. Service: shakedown out of Miami; New York-Guantanamo Bay convoy escort February-May 1944; sailed for the Pacific 3 June 1944 via the West Coast and Pearl Harbor; Purvis Bay, Florida Island, 24 August 1944; Palau assault - arrived off Angaur 17 September 1944, patrol and shore-bombardment duty; Kossol/southern Palaus patrols; departed for Pearl Harbor 26 December 1944; Saipan 4 March 1945; Okinawa - closed Hagushi Beach 1 April 1945 as convoy screen, then antiaircraft screening for transports and support ships through the remainder of the campaign; reclassified PCC-1177 on 20 August 1945; returned to the West Coast late 1945; decommissioned at Astoria, Oregon, 27 July 1946, Pacific Reserve Fleet; reclassified PC-1177 27 October 1955 while berthed in the Columbia River Group; named Guymon 15 February 1956; sold by the Navy to Zidell Exploration, Inc., 25 April 1961. Two battle stars for World War II service.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1943-1961

   Population

   Wartime crew (design complement 65); Leathem D. Smith Shipbuilding construction trades 1943

   Limitations

   DANFS is the official ship-history record for this hull: it documents construction, service, reclassifications, naming, and sale - not materials or asbestos content. Its specifications differ slightly from NavSource (22 kt vs 20.2 kt; five vs three 20 mm guns; two vs four depth-charge projectors) and its builder spelling ('Leathern') is a typo for Leathem D. Smith - carried in gaps. It does not state a striking date.

   Atlas source

   true

   Evidence ID

   ev-uss-guymon-pcc1177-01

3. [3]National Archives and Records Administration, Special List 44, by Ship Numbers, PC-1177 entry [other_primary]

   Locator

   SL-44 ship-number index, row PC-1177; coverage 12/20/1943-6/30/1945

   Finding type

   historical_record

   Finding

   The National Archives' Special List 44, List of Logbooks of the U.S. Navy by Ship Numbers, has a PC-1177 entry covering 20 December 1943 through 30 June 1945. The finding aid establishes that NARA holds logbook records for this hull for that interval; the coverage start aligns with the 20 December 1943 commissioning date in DANFS.

   Verification

   verified

   Role

   archival_lead

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1943-1945

   Limitations

   This is a NARA finding aid for logbooks, not the logbooks themselves. Its date range is record coverage, not proof of commissioning, continuous service, or any particular voyage. PC-1177 does not appear on NARA's digitized deck-log list - the logs are paper holdings at Archives II. The finding aid says nothing about asbestos, materials aboard, individual exposure, or legal eligibility.

   Atlas source

   true

   Evidence ID

   ev-uss-guymon-pcc1177-02

4. [4]Naval Sea Systems Command, Ship History, dated 28 June 2011 (archived capture; live URL returned HTTP 403 to direct fetch) [other_primary]

   Locator

   PDF, patrol-craft section, row: PC 1177 | GUYMON | 10-May-61 | UNK

   Finding type

   vessel_history

   Finding

   NAVSEA's inactive-ship history PDF indexes PC 1177 as GUYMON, with removal date 10 May 1961 and final disposition 'UNK' (unknown) - consistent with, but silent on, the 25 April 1961 sale to Zidell Exploration, Inc. recorded by DANFS, NavSource, and BGSU. The document is a post-service inventory/disposition source; it does not address the vessel's operations, materials, or asbestos.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1961; inventory dated 2011

   Limitations

   Cited from a 22 December 2016 Wayback capture because the live NAVSEA URL returned HTTP 403 to direct fetch on the access date; the archived copy is labeled as such. 'UNK' means the inventory source does not record the disposal method; the Zidell scrap sale rests on DANFS, NavSource, and BGSU. Establishes no asbestos facts.

   Atlas source

   true

   Evidence ID

   ev-uss-guymon-pcc1177-03

5. [5]NavSource Online: Submarine Chaser Photo Archive, Guymon (PC 1177), navsource.net - verified live [other_primary]

   Locator

   NavSource Guymon (PC 1177) page: milestone list, specifications block, commanding-officer table

   Finding type

   vessel_history

   Finding

   NavSource's Submarine Chaser Photo Archive page for Guymon (PC 1177) records the hull's construction and service milestones: original construction contract assigned to Defoe Shipbuilding Co., Bay City, MI; laid down 24 July 1943 at Leathem D. Smith Shipbuilding Co., Sturgeon Bay, Wisconsin; launched 18 September 1943; commissioned USS PC-1177 on 20 December 1943 at New Orleans, LA; served in the Central Pacific campaign 1944-1945; reclassified Control Submarine Chaser PCC-1177 on 20 August 1945; decommissioned 27 July 1946 at Astoria, Oregon and laid up in the Pacific Reserve Fleet, Columbia River Group; reclassified Submarine Chaser PC-1177 on 27 October 1955; named Guymon 15 February 1956; struck from the Naval Register 1 July 1960; sold for scrap 25 April 1961 to Zidell Exploration Inc. of Seattle, WA; two battle stars for World War II service. Specifications block: displacement 280 t (lt) / 450 t (fl); length 173 ft 8 in; beam 23 ft; draft 10 ft 10 in; speed 20.2 kt; complement 65; armament one 3"/50 DP mount, one 40 mm, three 20 mm, two rocket launchers, four depth-charge projectors, two depth-charge tracks; propulsion two 1,440 bhp Fairbanks Morse 38D8 1/8 diesels (serials 833295, 833296), Westinghouse single reduction gear, two shafts. The page also carries a six-officer commanding-officer table (Kiefer; Martin; Heady; Small; Trumble; Thompson).

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1943-1961

   Population

   Wartime crew (design complement 65)

   Limitations

   NavSource is a secondary volunteer compilation, not a primary registry - carried as context corroborating DANFS. Its specifications differ from DANFS on speed, 20 mm count, and depth-charge projector count (gaps); it supplies the only located striking date (1 July 1960, corroborated by BGSU) and the Defoe contract-assignment detail (corroborated by BGSU). Contains no asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-guymon-pcc1177-04

6. [6]BGSU University Libraries, Historical Collections of the Great Lakes, vessel database entry PC-1177 (item 439193) - verified live [museum_official]

   Locator

   HCGL item 439193: Vessel History, Build Information, and Disposition fields

   Finding type

   historical_record

   Finding

   Bowling Green State University Libraries' Historical Collections of the Great Lakes vessel database entry for PC-1177 records: steel-hulled U.S. Navy patrol craft, 173.66 ft x 23 ft x 8 ft; commissioned 20 December 1943; original construction contract assigned to Defoe Shipbuilding Co., Bay City, MI; built by Leathem D. Smith Shipbuilding Co., Sturgeon Bay, WI, 1943; served in the Central Pacific campaign 1944-1945; reclassified PCC-1177 on 20 August 1945; decommissioned 27 July 1946 at Astoria, OR, Columbia Reserve Group, Pacific Reserve Fleet; reclassified PC-1177 27 October 1955; name assigned 15 February 1956; stricken from the Navy Register 1 July 1960; sold 25 April 1961 to Zidell Exploration, Inc.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1943-1961

   Limitations

   A university maritime archive built from registry data - it corroborates the Defoe contract assignment, the Leathem D. Smith build, the timeline, and the Zidell sale, and independently supplies the 1 July 1960 striking date. It contains no asbestos information and its vessel-name table approximates date ranges to year precision.

   Atlas source

   true

   Evidence ID

   ev-uss-guymon-pcc1177-05

7. [7]HyperWar (ibiblio), 'US Navy Sub Chasers, 1940-1945' - transcription of an official Navy vessel listing - verified live [other_primary]

   Locator

   ships-sc.html, PC-1170s block, row 'PC-1177 | Guymon | 1943'

   Finding type

   vessel_history

   Finding

   HyperWar's transcription of 'Ships of the U.S. Navy, 1940-1945' (submarine-chaser section) lists 'PC-1177 | Guymon | 1943' among PC-461-class hulls - an official-compilation listing tying the name Guymon to hull PC-1177 and its 1943 construction year.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1943-1945 listing window

   Limitations

   A tabular listing only - it confirms the hull number/name pairing and construction year but no service, specification, or material detail. It is a transcription hosted on a reputable mirror, not the Navy's own current site. Contains no asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-guymon-pcc1177-06

8. [8]U.S. Government Accountability Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct. 18, 1979) [gao]

   Locator

   GAO product-page Highlights (Navy use of asbestos in ships; 1975 and 1979 insulation-removal policies)

   Finding type

   asbestos_application

   Finding

   GAO's 1979 review documents Navy-wide use of asbestos in Navy ships and describes Navy policy for removal and replacement of asbestos insulation: the 1975 policy removed and replaced with nonasbestos materials only insulation that was damaged or had to be removed for necessary repairs, modified in 1979 to selectively replace asbestos insulation in high-maintenance areas. It is class/era context for a World War II Navy patrol craft, not documentation that asbestos was installed, remained, or was removed aboard Guymon (PC-1177).

   Verification

   verified

   Role

   supporting

   Documentation level

   class_or_era

   Accessed

   2026-10-03

   Study period

   1975-1979 policy period; report published 1979

   Population

   Navy shipyard workers and Navy ships reviewed by GAO; not Guymon-specific

   Limitations

   GAO reviewed Navy-wide policy and fieldwork at Long Beach and Norfolk Naval Shipyards. It does not name Guymon, PC-1177, the PC-461 class, Leathem D. Smith Shipbuilding, or Defoe Shipbuilding, and it cannot establish ship-specific asbestos presence, quantity, condition, exposure, causation, or legal eligibility.

   Atlas source

   true

   Evidence ID

   ev-uss-guymon-pcc1177-07

9. [9]Oregon Department of Environmental Quality, 'Zidell Waterfront Property Cleanup' community advisory document (oregon.gov) - verified live [other_primary]

   Locator

   Oregon DEQ Zidell CAG document: site history (1946 purchase; 336 ships dismantled over 30 years), contaminants list (asbestos), and cleanup scope (asbestos abatement project, bulk ACM disposal)

   Finding type

   environmental_record

   Finding

   The firm that purchased this hull for scrap operated a documented asbestos-contaminated shipbreaking site: Oregon DEQ records that Zidell purchased a Willamette River (Portland) waterfront property in 1946 and dismantled 336 ships there over about 30 years; documented site contaminants include asbestos, and the cleanup included an asbestos-abatement project with certified workers, air monitoring, and bulk ACM disposal. PC-1177 was sold to Zidell Exploration, Inc. on 25 April 1961 (DANFS, NavSource, BGSU). Whether this hull was physically dismantled at the Portland site is not established by any located record.

   Verification

   verified

   Role

   context

   Documentation level

   context_only

   Accessed

   2026-10-03

   Study period

   1946-2012 (site operation and cleanup); hull sale 1961

   Population

   Zidell shipbreaking workers 1946-c.1976 (site-level, not hull-level)

   Limitations

   This documents the scrapping site, not the ship. It establishes that Zidell's shipbreaking operation is a documented asbestos-contaminated site; it does not establish that this hull was broken at that site (the sale was to Zidell Exploration, Inc., identified by NavSource as a Seattle, WA firm), that asbestos was aboard this hull, or that any person was exposed in dismantling it. No ship-specific inference is drawn.

   Atlas source

   true

   Evidence ID

   ev-uss-guymon-pcc1177-08

10. [10]Negative-finding result based on the source searches documented in search_ledger; no affirmative asbestos source located [other_primary]

    Locator

    Search ledger entries sl-01 through sl-16 (NHHC, NARA, NAVSEA, NavSource, BGSU, HyperWar, GAO, Oregon DEQ, NVR, official-source web sweep, and CourtListener)

    Finding type

    asbestos_application

    Finding

    No ship-specific asbestos survey, abatement record, hazardous-material inventory, construction specification, product-identification record, or qualifying litigation finding establishing asbestos aboard Guymon (PC-1177/PCC-1177) was located in this research session. Asbestos presence aboard this hull is unknown; no product or material is asserted.

    Verification

    partial

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-10-03

    Study period

    Research session 2026-10-03

    Limitations

    This records the bounded search outcome, not proof that asbestos was absent. The NAVSEA PDF required an archived copy, and the CourtListener litigation-sweep status is recorded in the ledger; class, construction-era, diesel-propulsion, and builder assumptions were not used to infer asbestos aboard this hull.

    Atlas source

    true

    Evidence ID

    ev-uss-guymon-pcc1177-09

11. [11]CourtListener API v4 search results, 2026-10-03 (docket 1245688 IN RE: Asbestos Products Liability Litigation No. VI; dockets 4216072, 15860894, 17248433, 16145711) [court_record]

    Locator

    CourtListener type=r search 'PC-1177' (21 hits) and '"PC-1177" asbestos' (5 hits); per-docket match positions not retrievable without further quota-spending requests

    Finding type

    litigation_documented

    Finding

    CourtListener docket indexing contains the token sequence 'PC 1177' in five asbestos-adjacent mega-dockets (MDL-875 JPML; W.R. Grace, Center City Healthcare, 24 Hour Fitness, and LeClairRyan bankruptcies) and sixteen further dockets, but no hit was verified as naming this hull. The phrase query tokenizes 'PC-1177' identically to 'P.C., 1177': one verified collision pattern is law-firm address text ('BROWN SIMS PC, 1177 W. Loop South, Houston' - a major asbestos-defense firm, seen in the Guidry opinion collision), another is the Indiana appellate docket number '19A-PC-1177'. Whether any indexed MDL-875 entry actually references the submarine chaser PC-1177 is unresolved.

    Verification

    unverified

    Role

    archival_lead

    Documentation level

    ship_specific

    Accessed

    2026-10-03

    Study period

    2026-10-03 (search)

    Population

    Unverified from index

    Limitations

    Docket-text token matches only; no hit was verified as naming the vessel. The verified collisions (docket number 19A-PC-1177; address text 'P.C., 1177 W. Loop South') show the match mechanism is not vessel-specific. Resolving whether any MDL-875 or bankruptcy-docket entry references the hull requires a within-docket entry pull not performed this session. Establishes nothing about materials aboard or exposure.

    Atlas source

    true

    Evidence ID

    ev-uss-guymon-pcc1177-10