USS PC-462

Evidence

16 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-16).

1. [1]research packet 893-packet.md (3 sources cited) [museum_official]

   Finding type

   vessel_history

   Finding

   Identity packet verdict: VERIFIED

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Evidence ID

   uss-pc-462-pc462-pkt-893-packet-md

2. [2]NavSource Online, Submarine Chaser Photo Archive, PCC-462 ex-PC-462 (live page verified 2026-10-03) [other_primary]

   Locator

   PC-462 page (12/010462.htm): milestone block, specifications block, commanding-officer table, photo caption (launching 24 Jan 1942), 'no DANFS' note

   Finding type

   vessel_history

   Finding

   The ship-specific page gives this hull's complete documented milestone chain: laid down 22 July 1941 by George Lawley and Sons, Inc., Neponset, Massachusetts; launched 24 January 1942; commissioned USS PC-462, 15 April 1942; 'Suffered damage 7 April 1945 off Okinawa'; reclassified Control Submarine Chaser PCC-462, 20 August 1945; returned to San Francisco October 1945; decommissioned 16 December 1945 at Mare Island, CA; 'Stuck from the Naval Register 8 May 1946' (sic - struck); transferred to the Maritime Commission for disposal 20 February 1947; 'Fate unknown'. Earned two battle stars for the Iwo Jima and Okinawa invasions. Specifications: 280 t. light / 450 t. full load; 173 ft 8 in; beam 23 ft; draft 10 ft 10 in; speed 20.2 kts; complement 65; armament one 3"/50 dual-purpose mount, one 40mm mount, three 20mm guns, two rocket launchers, four depth charge projectors, two depth charge tracks; propulsion two 1,440 bhp Fairbanks Morse 38D8 1/8 diesel engines (serial nos. 832277, 832278), Westinghouse single reduction gear, two shafts. Call sign Nan-Able-George-Jig. Commanding officer listed: LT R. W. Ela, USNR (1945).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1941-1947

   Population

   George Lawley construction trades (1941-42); USNR crew (complement 65) 1942-45; Mare Island decommissioning trades (1945)

   Limitations

   Ship-specific identity and milestone record, but NavSource is a volunteer photographic-history compilation, not a Navy registry or material survey. The 7 April 1945 damage entry is uncorroborated - the official USN chronology's damaged-ship lists for that date do not name this hull (see ev-06), and the cause, extent, and casualties are undocumented anywhere consulted. The two battle stars are stated without an awards-document citation. 'Fate unknown' leaves the post-1947 disposal undocumented. Contains no asbestos finding, no maintenance or abatement record, and no exposure evidence.

   Atlas source

   true

   Evidence ID

   ev-uss-pc-462-pc462-01

3. [3]National Archives, Special List #44, by Ship Numbers (ship logbook index PDF) [other_primary]

   Locator

   PDF, ship-number table, row 'PC-462 4/15/1942 12/14/1945'

   Finding type

   historical_record

   Finding

   NARA's ship-number logbook index includes PC-462 with a coverage interval of 15 April 1942 to 14 December 1945 - commissioning day to two days before decommissioning, essentially the ship's entire naval service. This confirms an archival lead for the ship's deck-log records and independently corroborates the commission and decommission dates carried by the compilation record.

   Verification

   verified

   Role

   archival_lead

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1942-04-15 to 1945-12-14 (indexed coverage)

   Population

   PC-462/PCC-462 crew across the entire commission (1942-45)

   Limitations

   The list is an index, not the logbook content. It establishes listed coverage dates but does not identify crew, voyages, damage events, materials, asbestos, or exposure. The underlying logbooks were not retrieved or page-read for this record; they are an open archival lead at NARA.

   Atlas source

   true

   Evidence ID

   ev-uss-pc-462-pc462-02

4. [4]Ships of the U.S. Navy, 1940-1945 - Submarine Chasers (official Navy tabulation, HyperWar transcription; live page verified 2026-10-03) [other_primary]

   Locator

   ships-sc.html, 'PC-461 Class' specification block and hull table (PC-462-65 row, comm. 1942-44)

   Finding type

   historical_record

   Finding

   The official Navy vessel tabulation transcribed by HyperWar places PC-462 in the purpose-built steel PC-461 class (table row 'PC-462-65 ... 1942-44' - PC-462 through PC-465 as a group) - not among the converted yachts that carry PC-454-458, PC-460. This corroborates the hull's class identity and the 1942 commission window. PC-461-class block: displacement 284 tons; length 173 ft 8 in; beam 23 ft; draft 10 ft 10 in; speed 21 knots; armament one 3"/50, one 40mm, five 20mm, two depth-charge throwers (mousetraps), two K-guns, two depth-charge racks; complement 65; diesel engines, two screws, 2,280 shaft hp.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1940-1945 (table coverage)

   Population

   PC-461-class construction trades; PC-462 crew (commission window 1942-45)

   Limitations

   Official-source tabulation in secondary transcription; the class-block figures are class-level values, not this hull's measured specifications, and they conflict modestly with the ship-specific page (displacement 284 vs 280 t. light; speed 21 vs 20.2 kts; armament five 20mm + two K-guns vs three 20mm + rocket launchers; 2,280 shp vs 2 x 1,440 bhp rated) - carried in gaps. No asbestos or materials content.

   Atlas source

   true

   Evidence ID

   ev-uss-pc-462-pc462-03

5. [5]Shipbuilding History (Tim Colton), 'Sub Chasers Built During WWII' - PC-462 construction register row (live page verified 2026-10-03) [other_primary]

   Locator

   shipbuildinghistory.njscuba.net/us-navy-small/pc2/ - PC-462 table row (Lawley & Sons block)

   Finding type

   vessel_history

   Finding

   Independent shipbuilding-register corroboration: 'PC-462 | Lawley & Sons | Neponset MA | 463 | 173 | 15 Apr 1942 | to MARAD 1947' - builder, location, 463 light-displacement tons, 173 ft length, 15 April 1942 commission, and Maritime Administration disposal all match the ship-specific compilation record. The same table documents that Lawley & Sons of Neponset built the contiguous block PC-461 through PC-470 (plus later blocks including PC-616-619 and PC-1083-1086), placing this hull in a documented production run at that yard.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1941-1942 (build); 1947 (disposal flag)

   Population

   George Lawley construction trades (1941-42)

   Limitations

   Specialist secondary register (Colton); tabulates the commission date as the delivery/entry figure - consistent with, not independent of, Navy milestone records. 'to MARAD 1947' is consistent with the 20 February 1947 Maritime Commission transfer but does not give the exact date or ultimate fate. No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-pc-462-pc462-04

6. [6]NHHC DANFS canonical URL checks for PC-462 / PCC-462 (three variants) [nhhc_danfs]

   Locator

   Canonical DANFS URL checks (three variants, all 404) + NavSource 'no DANFS history currently available' note

   Finding type

   vessel_history

   Finding

   No live NHHC DANFS entry for PC-462 was located: the canonical URLs for pc-462.html, pc462.html, and pcc-462.html all returned HTTP 404 when checked on 2026-10-03, and the ship-specific compilation page explicitly states 'There is no DANFS History currently available for PC-462.'

   Verification

   verified

   Role

   negative_finding

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   checked 2026-10-03

   Population

   PC-462 archival record

   Limitations

   A missing DANFS entry is an access/catalogue finding, not evidence that no other official record exists - the official USN tabulation (ev-03), the NARA logbook index (ev-02), and a NARA action-report item (ev-10) all document this hull. No claim about asbestos or exposure follows from the absence.

   Atlas source

   true

   Evidence ID

   ev-uss-pc-462-pc462-05

7. [7]Robert J. Cressman, The Official Chronology of the U.S. Navy in World War II (Contemporary History Branch, Naval Historical Center), 1945 chapter - 7 April 1945 section checked (HyperWar transcription; live page verified 2026-10-03) [other_primary]

   Locator

   USN-Chron-1945.html, '7 April, Sat.' / Pacific section (full damaged-ship lists read; PC-462 absent)

   Finding type

   vessel_history

   Finding

   The official Navy chronology's 7 April 1945 entries do not name PC-462. The Pacific section for that date is unusually detailed - it lists by name the ships damaged by kamikazes off Okinawa (Hancock CV-19, Maryland BB-46, Longshaw DD-559, Bennett DD-473, Wesson DE-184, YMS-81), ships sunk or scuttled (Emmons DMS-22, LST-447, PGM-18), and ships damaged by mines, grounding, collision, and shore battery (YMS-103, YMS-427, LST-698, LST-890) - and PC-462 appears in none of these lists. The compilation record's bare claim that the ship 'suffered damage 7 April 1945 off Okinawa' therefore stands without official corroboration in this source.

   Verification

   verified

   Role

   negative_finding

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1945-04-07

   Population

   PC-462 crew at the reported damage date

   Limitations

   Absence from the chronology does not prove the damage did not occur - the chronology does not catalog every minor casualty, and the damage may have been too slight, too operational (e.g., grounding or near-miss), or reported under a task-unit rather than ship name. Cause, extent, and any casualties remain undocumented; the NavSource claim is carried with this caveat and in gaps.

   Atlas source

   true

   Evidence ID

   ev-uss-pc-462-pc462-06

8. [8]Naval Vessel Register historical-detail URL check for PC-462 (live NVR site verified 2026-10-03) [other_primary]

   Locator

   NVR PC-462 detail URL (redirects to register main page) + site note on pre-1987 disposals

   Finding type

   vessel_history

   Finding

   The NVR detail URL does not provide a PC-462 historical vessel record: it redirects to the register's main page (https://www.nvr.navy.mil/nvr/). The NVR states that ships and service craft disposed of before 1987 are generally not currently included; this hull was stricken in 1946 and transferred to the Maritime Commission in 1947.

   Verification

   verified

   Role

   negative_finding

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1946-1947 disposal; NVR site checked 2026-10-03

   Population

   PC-462 historical registry record

   Limitations

   A current-register catalogue finding, not evidence that no historical Navy disposition file exists - the striking (8 May 1946) and Maritime Commission transfer (20 Feb 1947) are documented in the ship-specific compilation record. It does not establish asbestos status or exposure.

   Atlas source

   true

   Evidence ID

   ev-uss-pc-462-pc462-07

9. [9]U.S. Coast Guard Historian's Office, oral history/memoir for USS PC-469 (live page verified 2026-10-03) [other_primary]

   Locator

   history.uscg.mil USS PC-469 oral-history page, introductory paragraph (CG-manned hull enumeration) + NavSource CO table (LT R. W. Ela, USNR)

   Finding type

   historical_record

   Finding

   The official Coast Guard historian page enumerates the Coast Guard-manned PC hulls: 'The Coast Guard manned and operated four of these unusual ships - PC-469, PC-545, PC-556 and the PC-590. All were commissioned in 1942.' PC-462 is not among them - resolving the manning-service question for this hull: she was a Navy-manned hull, and her commanding officers were USNR officers (LT R. W. Ela, USNR, 1945, per the ship-specific page; a seven-officer all-USNR command sequence is also carried by the uboat.net command table).

   Verification

   verified

   Role

   negative_finding

   Documentation level

   ship_specific

   Accessed

   2026-10-03

   Study period

   1942-1945

   Population

   PC-462 Navy/USNR crew (1942-45)

   Limitations

   The USCG enumeration is an official-source list of CG-manned hulls; absence from it is strong but negative evidence - it rules out full CG manning, not the possibility of individual CG personnel aboard. No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-pc-462-pc462-08

10. [10]U.S. Coast Guard Historian's Office, oral history/memoir for USS PC-469 - Lawley Neponset outfitting description (live page verified 2026-10-03) [other_primary]

    Locator

    history.uscg.mil USS PC-469 oral-history page, 'During May 1942' paragraph (Neponset outfitting, ship characteristics)

    Finding type

    historical_record

    Finding

    A contemporaneous officer account of sister hull PC-469's final outfitting at the George Lawley shipyard, Neponset, in May 1942 - one month after this hull commissioned at the same yard - documents the PC-461-class build context: length 173 ft 8 in, 23 ft beam, 450-ton full-load displacement, twin screw with three-bladed 6-ft props, two Fairbanks Morse ten-cylinder opposed-piston diesels (2,280 shp total), two 3-inch/50 guns, five 20mm, two K-guns, two stern depth-charge racks, gyrocompass, radio direction finder, sonar; complement four officers and 55 enlisted for the CG-manned hull. Confirms the Lawley yard's production-line build of this class and period.

    Verification

    verified

    Role

    context

    Documentation level

    class_or_era

    Accessed

    2026-10-03

    Study period

    1941-1942 (build window for both hulls)

    Population

    George Lawley construction/outfitting trades (1941-42); PC-461-class crews

    Limitations

    Class/yard context for a sister hull, not a PC-462 record: the account names PC-469 only. Its figures are the memoirist's recollections (two 3"/50 guns vs the class block's one; five officers 'most of the other PC's' vs the CG-manned four-officer complement) and are context-level, not this hull's documented fit. No asbestos or materials content.

    Atlas source

    true

    Evidence ID

    ev-uss-pc-462-pc462-09

11. [11]NARA item NAID 140031070, 'USS PC-462 - Rep of AA act off Ie Shima, Ryukyu Is, 5/6/45', Records of the Office of the Chief of Naval Operations, WWII War Diaries/Other Operational Records and Histories (indexed via DPLA; live page verified 2026-10-03) [other_primary]

    Locator

    catalog.archives.gov/id/140031070 via DPLA item dp.la/item/c688d7cbbfd381a7dd1bccce02b65046 (micro serial 124919; serial 69-45; date 5/6/1945)

    Finding type

    historical_record

    Finding

    A NARA-cataloged wartime operational record exists for this hull: the report of anti-aircraft action by USS PC-462 off Ie Shima in the Ryukyu Islands dated 5/6/1945 (micro serial 124919, serial 69-45), created by the Navy Office of the Chief of Naval Operations, Intelligence Division, Office of Naval Records and Library, held at NARA College Park on microfilm. This is primary-source confirmation that the hull was in combat air-defence operations in the Okinawa area in May 1945 - independently supporting its documented Okinawa service and the compilation record's damage claim in the same waters the prior month.

    Verification

    verified

    Role

    archival_lead

    Documentation level

    ship_specific

    Accessed

    2026-10-03

    Study period

    1945-05-05/06 (report event); item dated 1945-05-06

    Population

    PC-462 crew during the reported action

    Limitations

    Archival lead only: the catalog entry establishes that the action report exists; its content was not retrieved or page-read this session, so what it reports (targets engaged, damage sustained or inflicted, casualties) is unknown. A report of AA action is not itself evidence of battle damage to this hull, and no asbestos content can attach to it.

    Atlas source

    true

    Evidence ID

    ev-uss-pc-462-pc462-10

12. [12]Wikipedia, 'PC-461-class submarine chaser' (secondary reference; live page verified 2026-10-03) [other_primary]

    Locator

    PC-461-class article, 'Other active duty' section (32-hull PCC reclassification list)

    Finding type

    historical_record

    Finding

    Secondary corroboration of the PCC reclassification: the class article states that thirty-two PC-461-class ships 'were formally reclassified as amphibious control craft on 20 August 1945' and lists PC-462 first among the hulls that thereafter used the hull classification symbol PCC with their existing numbers. Consistent with the ship-specific page's 'Reclassified as a Control Submarine Chaser, PCC-462, 20 August 1945' - the reclassification was a group administrative action, not a one-off.

    Verification

    partial

    Role

    context

    Documentation level

    ship_specific

    Accessed

    2026-10-03

    Study period

    1945-08-20

    Population

    PC-462/PCC-462 crew

    Limitations

    Secondary source used for corroboration only; the reclassification itself is carried on the NavSource (ship-specific) record. Wikipedia is not an authoritative source - the underlying administrative document (BuShips/classification action) was not located. No asbestos content.

    Atlas source

    true

    Evidence ID

    ev-uss-pc-462-pc462-11

13. [13]uboat.net Allied Warships database, USS PC-462 (PC-462) page (specialist secondary compilation; live page verified 2026-10-03) [other_primary]

    Locator

    uboat.net/allies/warships/8484.html - warship data block + 'Commands listed' table

    Finding type

    vessel_history

    Finding

    Specialist secondary corroboration and command detail: ordered 26 December 1940; laid down 22 July 1941; launched 24 January 1942; commissioned 15 April 1942; end service 16 December 1945; builder George Lawley & Sons Inc., Neponset MA - all matching the ship-specific record. Commanding-officer table (WWII window): W. D. Stevens USNR (15 Apr 1942-1942); J. W. Humrichhouse USNR (1942-early 1943); B. H. Hallowell USNR (early-mid 1943); D. Pendarvis USNR (mid-late 1943); D. F. Ross USNR (late 1943-mid 1944); H. S. Cecil USNR (mid 1944-early 1945); Robert W. Ela USNR (early 1945-16 Dec 1945).

    Verification

    partial

    Role

    context

    Documentation level

    ship_specific

    Accessed

    2026-10-03

    Study period

    1940-1945

    Population

    Seven USNR commanding officers; crew under each tenure (1942-45)

    Limitations

    Secondary compilation (Gudmundur Helgason's Allied Warships database) - milestones corroborate the ship-specific record but the CO table and the 26 December 1940 order date are uncorroborated by a primary source this session; NavSource's CO table lists only Ela. The all-USNR officer list is consistent with the USCG historian's CG-manning exclusion (ev-08) but does not itself prove manning service. No asbestos content.

    Atlas source

    true

    Evidence ID

    ev-uss-pc-462-pc462-12

14. [14]U.S. General Accounting Office, HRD-80-2, Navy Efforts To Protect Workers From Asbestos Exposure (18 October 1979) [gao]

    Locator

    GAO product page hrd-80-2; report summary and 'Navy's Policy on Use of Asbestos' section

    Finding type

    asbestos_application

    Finding

    GAO reports that the Navy told investigators all ships contained some asbestos in components such as clutches and electric cables, that thermal insulation was the Navy's major use of asbestos aboard ships, and that the Navy's policy to eliminate asbestos as an acceptable thermal-insulation material was issued in October 1975. This supplies Navy-wide era context covering this hull's entire construction (1941-42) and service (1942-45) period.

    Verification

    verified

    Role

    context

    Documentation level

    class_or_era

    Accessed

    2026-10-03

    Study period

    1941-1945 construction/service era; GAO review 1979

    Population

    Navy shipyard workers and Navy ships in the GAO review; era context for PC-462

    Limitations

    Program-level evidence from a review of Long Beach and Norfolk Naval Shipyards; it does not name PC-462, identify its installed materials, establish asbestos content in any component aboard this hull, or prove exposure. gao.gov returns HTTP 403 to automated fetches (standing access defect since Batch 01); the product-page description and fleet-verified report content were used - the live page could not be re-verified this session.

    Atlas source

    true

    Evidence ID

    ev-uss-pc-462-pc462-13

15. [15]Era inference built on: NavSource specifications (all-diesel Fairbanks Morse plant, no steam); HyperWar PC-461-class block (diesel engines, 2 screws, 2,280 shp); GAO HRD-80-2 Navy-wide shipboard-asbestos use (ev-13); USCG Lawley-yard build account (ev-09) [other_primary]

    Locator

    NavSource specifications/propulsion block; ships-sc.html PC-461 class block; GAO HRD-80-2 (ev-13); USCG PC-469 Lawley account (ev-09)

    Finding type

    asbestos_application

    Finding

    A purpose-built steel warship built 1941-42 at George Lawley & Sons and in Navy commission 1942-45 sits inside the documented Navy asbestos era. Era-standard asbestos applications aboard a small diesel-powered steel warship of this period were engine and exhaust insulation or lagging, gaskets and valve/flange packing, electrical insulation and cable covering, and compartment insulation or bulkhead linings where fitted. As an all-diesel vessel she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply - and a 173-foot patrol craft carried far less machinery insulation than a capital ship. Her documented Okinawa-area service and reported April 1945 damage, followed by return to San Francisco and Mare Island decommissioning, bound any repair-era disturbance to 1945-47.

    Verification

    inferred

    Role

    supporting

    Documentation level

    class_or_era

    Accessed

    2026-10-03

    Study period

    1941-1947

    Population

    George Lawley construction trades (1941-42); USNR crew (complement 65) 1942-45 incl. reported Okinawa damage window; Mare Island decommissioning trades (1945); unknown disposal-era population post-1947

    Limitations

    Class/era inference only - no hull-specific insulation survey, material list, work package, or repair record located for PC-462. Names era-standard applications, not confirmed installed materials; no quantity; no manufacturer attribution. A small all-diesel patrol craft carried bounded insulation compared with steam warships; the inference is contextual, not a ship-specific finding.

    Atlas source

    true

    Evidence ID

    ev-uss-pc-462-pc462-14

16. [16]Batch-7837 source review and search ledger [other_primary]

    Locator

    Search ledger rows sl-uss-pc-462-pc462-01 through -17

    Finding type

    asbestos_application

    Finding

    No ship-specific asbestos survey, material specification, abatement record, hazardous-material disclosure, asbestos product identification, or verified exposure record for PC-462/PCC-462 was located in the authoritative sources reviewed for this batch. The record therefore carries no ship-specific asbestos finding and remains Tier 2 based on class/era context only.

    Verification

    partial

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-10-03

    Study period

    1941-1947

    Population

    PC-462 construction trades and crew

    Limitations

    This is a bounded negative finding, not proof that no such record exists. The CourtListener litigation sweep could not be completed - the authenticated helper reported the fleet-wide pacing stand-down on three spaced attempts at the first base query this session; litigation status remains an open gap rather than a negative result. NARA deck logs (indexed 1942-45), the Ie Shima action report (NAID 140031070), Lawley build records (Mystic Seaport Lawley Family Collection coll. 279; MIT McInnis-Lawley Collection), and any Maritime Commission disposal file are undigitized leads.

    Atlas source

    true

    Evidence ID

    ev-uss-pc-462-pc462-15