USS Ukiah (PC-1251)

Evidence

12 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-12).

1. [1]research packet 877-packet.md [other_primary]

   Finding type

   vessel_history

   Finding

   Identity packet verdict: VERIFIED

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Evidence ID

   uss-ukiah-pc1251-pkt-877-packet-md

2. [2]DANFS, PC-1251 (NHHC live page verified 2026-10-03; updated by Robert J. Cressman, 10 Feb 2021) [nhhc_danfs]

   Locator

   DANFS PC-1251 entry: service narrative, spec block, battle-star note

   Finding type

   vessel_history

   Finding

   DANFS record for this hull: laid down 8 June 1942 at Houston, Texas, by the Brown Shipbuilding Co.; launched 12 September 1942, sponsored by Miss Betty Ann Woolsey; commissioned 27 February 1943, Lt. Louis C. Mabley, D-V(G), USNR, in command. Shakedown under Commander, Submarine Chaser Training Center, Miami; Caribbean ASW/escort on the Guantanamo Bay-Aruba-Trinidad circuit, then New York-Key West; Miami yard overhaul; Gulf/East Coast escort. To the Pacific May 1944 (Panama Canal 12 June; San Diego 22 June-8 July; Pearl Harbor 15 July); Solomons 24 August; TF 32 Palau invasion - screened the Angaur Tractor Group (81st Division), control vessel for Red Beach at Angaur, then ASW screen; Kossol Roads/Peleliu patrols and convoy escort among Saipan, Manus, Eniwetok, Ulithi, Palaus Oct 1944-Feb 1945; Guam-Ulithi-Eniwetok circuit; arrived Pearl Harbor 11 March 1945 and commenced a two-month overhaul the following day, emerging 7 May; Central Pacific and Okinawa convoys; Philippines Manila-San Pedro Bay patrols at capitulation; redesignated control submarine chaser PCC-1251 on 20 August 1945; escorted six LSTs from Leyte Gulf to Hiroshima (Hiro Wan 6 October 1945); moored pierside at Apra Harbor, Guam, mid-October 1945 to late April 1946; departed Guam 24 April 1946, reached Astoria, Oregon, 24 May; inactivation overhaul at the Kaiser Shipyards in Portland; towed back to Astoria 12 July; decommissioned 3 August 1946 into the Columbia River Group, Pacific Reserve Fleet; stricken 1 July 1960 and scrapped subsequently. One battle star for the capture and occupation of the southern Palau Islands, 6 September-14 October 1944. Spec block: displacement 280 (full load); length 173'8"; beam 23'0"; draft 10'10"; speed 20.2 knots (trial); complement 65; armament 1 3-inch, 1 40mm, 2 20mm, 2 depth charge projectors, 2 depth charge tracks; class PC-461.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1942-1960

   Population

   Brown Shipbuilding construction trades (1942-43); wartime crew (design complement 65); Kaiser Portland inactivation trades (1946)

   Limitations

   Ship-specific official history; contains no asbestos, materials, or abatement content. DANFS does not name which Kaiser Portland yard performed the 1946 inactivation overhaul, does not identify the scrapping buyer/site, and does not list post-commissioning commanding officers. Spec-block displacement reads '280 (full load)' while NavSource reads 280 light / 450 full - carried in gaps.

   Atlas source

   true

   Evidence ID

   ev-uss-ukiah-pc1251-01

3. [3]DANFS, Ukiah (PCC-1251) naming entry (NHHC live page verified 2026-10-03) [nhhc_danfs]

   Locator

   DANFS Ukiah (PCC-1251) entry, full text

   Finding type

   vessel_history

   Finding

   NHHC Ukiah entry: named for 'a city located in western California about 54 miles north-northwest of Santa Rosa... the seat of government for Mendocino County.' 'The unnamed PCC-1251 was named Ukiah on 15 February 1956 while she lay in the Pacific Reserve Fleet. She never served actively under that name, and was stricken from the Naval Vessel Register on 1 July 1960. See PC-1251 for complete history.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1956-1960

   Population

   Pacific Reserve Fleet caretaker/maintenance personnel, Columbia River Group (1946-1960)

   Limitations

   Naming/disposition entry only; no asbestos content. Confirms the name applied only while in reserve and that no crew served aboard a vessel named Ukiah - post-1946 population aboard was reserve-fleet maintenance personnel only.

   Atlas source

   true

   Evidence ID

   ev-uss-ukiah-pc1251-02

4. [4]NavSource Online, Submarine Chaser Photo Archive, Ukiah (PCC-1251) ex-PC-1251 (live page verified 2026-10-03 on navsource.net; navsource.org is dead) [other_primary]

   Locator

   NavSource 12/011251.htm header block, milestone paragraph, specifications block, CO list, photo caption

   Finding type

   vessel_history

   Finding

   NavSource record for this hull: laid down 8 June 1942 at Brown Shipbuilding Co., Houston, TX; launched 12 September 1942; commissioned USS PC-1251, 27 February 1943; reclassified control submarine chaser PCC-1251, 20 August 1945; decommissioned 3 August 1946 at Astoria, Oregon, laid up in the Pacific Reserve Fleet, Columbia River Group; named Ukiah 15 February 1956; struck from the Navy Register 1 July 1960 and scrapped. Specifications: displacement 280 lt / 450 fl; 173'8" x 23' x 10'10"; 20.2 kts; complement 65; armament one 3"/50 DP mount, one 40mm mount, two 20mm, two depth-charge projectors, two depth-charge tracks; propulsion two 1,440-bhp Fairbanks-Morse 38D8-1/8 diesel engines (serial nos. 833263 and 833264), Westinghouse single-reduction gear, two shafts; call sign November-Delta-Charlie-India. CO list: LT Louis C. Mabley USNR (27 Feb 1943), LT Wayne Woodrow Hayes USNR (1944), LT H. C. Shoemaker USNR (1945). One photograph caption dates the hull passing USS Enterprise (CV-6) in Puget Sound to 2 August 1944. A marginal note states the Naval Vessel Register of 1 January 1949 lists the planned inactivation as January 1947.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1942-1960

   Population

   Brown construction trades (1942-43); crew (1943-46); reserve-fleet caretakers (1946-60)

   Limitations

   Volunteer photographic-history compilation, not a Navy registry; dates cross-check against DANFS. The Puget Sound 2 August 1944 photo caption conflicts with the DANFS itinerary (maneuvers out of Pearl Harbor until 12 August 1944) - carried in gaps, not reconciled. Contains no asbestos, abatement, or materials content; scrapping buyer/site not identified.

   Atlas source

   true

   Evidence ID

   ev-uss-ukiah-pc1251-03

5. [5]Naval History and Heritage Command, United States Pacific Fleet Organization, 1 May 1945 (official organization table, NHHC online reading room) [other_primary]

   Locator

   Pacific Fleet Organization 1 May 1945, Service Squadron Two vessel table, row 'PC 1251 | Lt. H. C. Shoemaker (USNR)'

   Finding type

   historical_record

   Finding

   The official Pacific Fleet organization table of 1 May 1945 lists PC 1251 within the Service Squadron Two block, with 'Lt. H. C. Shoemaker (USNR)' as commanding officer. This independently confirms Shoemaker in command on that date (NavSource CO list also carries Shoemaker for 1945) and places the hull under the Service Force, Pacific Fleet service-squadron structure - consistent with the DANFS account that PC-1251 was in a two-month overhaul at Pearl Harbor, which ended 7 May 1945. The table itself does not state her physical location.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1945-05-01

   Population

   PC-1251 command and crew on 1945-05-01 (Lt. H. C. Shoemaker, commanding)

   Limitations

   Point-in-time command listing only - not a complete operational history, crew list, or materials record. The table does not name the overhaul yard or describe any work performed. No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-ukiah-pc1251-04

6. [6]National Archives, Special List #44, by Ship Numbers (ship logbook index PDF) [other_primary]

   Locator

   Special List #44 by Ship Numbers, PDF p. 68, row 'PC-1251 2/27/1943 6/30/1945'

   Finding type

   historical_record

   Finding

   NARA's ship-number logbook index lists PC-1251 with a logbook coverage interval of 27 February 1943 to 30 June 1945 - confirming that archival deck/log records for this hull's commissioned period exist in NARA custody, and independently matching the commissioning date in DANFS and NavSource.

   Verification

   verified

   Role

   archival_lead

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1943-02-27 to 1945-06-30

   Population

   PC-1251 crew and ship operations during the indexed logbook period (1943-45)

   Limitations

   Index entry only - establishes logbook coverage dates, not logbook content. Does not identify crew, voyages, materials, asbestos, or exposure. The listed coverage ends 30 June 1945, before the PCC redesignation and 1946 inactivation; logbooks for the final year were not located in this index. The underlying logbooks were not retrieved or page-read.

   Atlas source

   true

   Evidence ID

   ev-uss-ukiah-pc1251-05

7. [7]Shipbuilding History (Colton & Co.), Brown Shipbuilding, Houston TX - yard hull table [other_primary]

   Locator

   Brown Shipbuilding yard table, row for hull no. 27 (PC 1251)

   Finding type

   vessel_history

   Finding

   Specialized shipbuilding reference confirms this hull in the builder's own production table: Brown yard hull no. 27, 'PC 1251, Sub Chaser', keel laid 8 June 1942, launched 12 September 1942, delivered 27 February 1943, disposition 'Named Ukiah 1956, scrapped 1960'. The yard was built in 1941 by George and Herman Brown at Green's Bayou on the Houston Ship Channel with $9M of Navy funding and delivered 12 PCs, 32 LCI(L)s, 61 DEs, and 254 LSMs - 359 vessels in four years; in 1949 the yard was leased to Todd Shipyards Corporation.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1942-1960

   Population

   Brown Shipbuilding construction trades (1941-45 yard peak)

   Limitations

   Secondary specialized compilation (not a government registry); dates cross-check exactly with DANFS. Confirms build identity and the four-year wartime production window that places construction in the documented Navy asbestos-use era - but contains no asbestos, materials, or worker-health content itself.

   Atlas source

   true

   Evidence ID

   ev-uss-ukiah-pc1251-06

8. [8]U.S. General Accounting Office, HRD-80-2, Navy Efforts To Protect Workers From Asbestos Exposure (18 October 1979; live PDF text verified via Firecrawl 2026-10-03) [gao]

   Locator

   HRD-80-2 transmittal letter and 'Navy's Policy on Use of Asbestos' section (specs 1973; policy Oct 1975; deliveries through May 1978)

   Finding type

   asbestos_application

   Finding

   GAO reports the Navy advised investigators that 'all ships contain some asbestos in such components as clutches and electric cables,' that thermal insulation was the Navy's major use of asbestos aboard ships, that product specifications for thermal insulation were changed in 1973 to specify asbestos-free materials, and that the Navy's policy to eliminate asbestos as an acceptable thermal-insulation material was issued in October 1975 (NAVSEAINST 5100.2 of 24 October 1975) - with some ships still delivered with asbestos insulation as late as May 1978. This places PC-1251's entire 1942-46 construction and service era inside the documented Navy asbestos-use period.

   Verification

   verified

   Role

   context

   Documentation level

   class_or_era

   Accessed

   2026-10-03

   Study period

   1942-46 era relevance; GAO review 1979

   Population

   Navy ships and shipyard workers Navy-wide (era context)

   Limitations

   Program-level evidence from a review of Long Beach and Norfolk Naval Shipyards; does not name PC-1251 or any patrol craft, does not identify installed materials aboard this hull, and establishes no exposure. gao.gov product page returns HTTP 403 to direct fetch; the asset PDF was retrieved via Firecrawl and the quoted text verified.

   Atlas source

   true

   Evidence ID

   ev-uss-ukiah-pc1251-07

9. [9]Era inference built on: DANFS spec block (PC-461 class, diesel plant); NavSource specifications (two Fairbanks-Morse 38D8-1/8 diesels, two shafts, no steam plant); GAO HRD-80-2 Navy-wide asbestos-use documentation (ev-07) [other_primary]

   Locator

   DANFS spec block; NavSource specifications; GAO HRD-80-2

   Finding type

   asbestos_application

   Finding

   A steel-hulled patrol craft built 1942-43 sits inside the documented Navy asbestos-use era; era-standard applications aboard a diesel-driven small combatant of this type and period were thermal and acoustic insulation, machinery and diesel-exhaust lagging, gaskets, valve and flange packing, electrical insulation (GAO documents clutches and electric cables as universal asbestos components), and deck/compartment materials where fitted. As a diesel craft she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply, but the confined 173-foot hull concentrates whatever insulation and packing materials were installed.

   Verification

   inferred

   Role

   supporting

   Documentation level

   class_or_era

   Accessed

   2026-10-03

   Study period

   1942-1960

   Population

   Brown Shipbuilding construction trades (1942-43); crew (1943-46); Kaiser Portland inactivation trades (1946); reserve-fleet caretakers (1946-60); 1960-era shipbreakers

   Limitations

   Class/era inference only - no hull-specific insulation survey, material list, work package, or product identification was located for PC-1251. Names era-standard applications, not confirmed installed materials. No quantity, no manufacturer attribution, no present-day presence (hull scrapped).

   Atlas source

   true

   Evidence ID

   ev-uss-ukiah-pc1251-08

10. [10]EPA, Portland Harbor Superfund Site Remedial Investigation/Feasibility Study (EPA Document 100004575) - ACM documented at the former Kaiser Portland yard complex [other_primary]

    Locator

    EPA RI/FS document 100004575 (live URL; content via shipyards.json oregon-shipbuilding characterization)

    Finding type

    environmental_record

    Finding

    Environmental record for the site of this hull's 1946 inactivation overhaul: the EPA Portland Harbor Superfund RI/FS documents asbestos-containing material in former shipyard upland and overwater areas at the Kaiser Portland yard complex (characterization per the shipyards dataset's Oregon Shipbuilding/Swan Island entry; the RI/FS PDF URL verified live). PC-1251's inactivation overhaul 'at the Kaiser Shipyards in Portland' (DANFS) sits inside that documented yard complex.

    Verification

    partial

    Role

    context

    Documentation level

    context_only

    Accessed

    2026-10-03

    Study period

    1946 (yard event); RI/FS site documentation

    Population

    Kaiser Portland inactivation-overhaul trades (1946); later site remediation population

    Limitations

    Site-level environmental record of a yard decades later - not a hull record, not a work order, and not evidence any ACM was encountered aboard or during PC-1251's inactivation. DANFS does not specify which Kaiser Portland yard (Oregonship/St. Johns vs. Swan Island) performed the work; the RI/FS content characterization is via the shipyards dataset, which itself flags a Swan Island attribution caveat - verification partial.

    Atlas source

    true

    Evidence ID

    ev-uss-ukiah-pc1251-09

11. [11]Naval Vessel Register detail-URL check for PC-1251 [other_primary]

    Locator

    NVR PC-1251 detail URL (302 redirect); NVR site note on pre-1987 disposals

    Finding type

    vessel_history

    Finding

    No current NVR detail record exists for PC-1251: the conventional detail URL redirects (HTTP 302) and the NVR site excludes ships disposed of before 1987 in general; this hull was stricken in 1960.

    Verification

    verified

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-10-03

    Study period

    checked 2026-10-03

    Limitations

    A current-register catalogue finding, not evidence that no historical Navy disposition file exists and no information about asbestos or exposure.

    Atlas source

    true

    Evidence ID

    ev-uss-ukiah-pc1251-10

12. [12]Batch-7747 source review and search ledger (this record) [other_primary]

    Locator

    search_ledger rows sl-uss-ukiah-pc1251-01 through -13

    Finding type

    asbestos_application

    Finding

    No ship-specific asbestos survey, abatement record, hazardous-material disclosure, asbestos product identification, or verified exposure record for PC-1251/PCC-1251/Ukiah was located in the authoritative sources reviewed for this batch. The record therefore carries no ship-specific asbestos finding and remains Tier 2 on class/era context only. A secondary web sweep surfaced no qualifying litigation - only law-firm marketing pages on the builder yard (mesothelioma.com, mesotheliomaveterans.org, mesotheliomalawyercenter.org, mesothelioma.net, asbestos-ships.com), excluded by source policy, and a noise collision on '1251'.

    Verification

    partial

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-10-03

    Study period

    1942-1960

    Population

    Brown construction trades, US crew, Kaiser Portland trades, reserve-fleet caretakers, shipbreakers

    Limitations

    Bounded negative finding, not proof that no record exists. CourtListener was stood down by the authenticated helper's fleet-wide pacing limiter on the first base query this session; the four required base queries are logged as blocked in the search_ledger - recorded here as not completed, not as a negative result. Deck logs (NARA SL-44 interval ends 30 June 1945), Brown yard work packages, and any scrapping-sale record are undigitized leads.

    Atlas source

    true

    Evidence ID

    ev-uss-ukiah-pc1251-11