Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
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[1]research packet 894-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-antigo-pc470-pkt-894-packet-md
-
[2]DANFS, Antigo I (PC-470) - construction, wartime service narrative, naming, striking, spec block (live NHHC page, published 2015-06-18) [nhhc_danfs]
- Locator
- DANFS Antigo I (PC-470) service narrative and spec block
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 27 February 1942 at Neponset, Mass., by George Lawley & Sons, Inc.; launched 27 June 1942; commissioned 31 July 1942, Lt. R. E. Parker in command. Convoy escort Guantanamo Bay-Coco Solo summer 1942-June 1944; San Diego to 11 August 1944, then Pearl Harbor; departed Pearl Harbor 10 October 1944 via Eniwetok; off Tacloban, Leyte, 20 October 1944 as control vessel guiding landing craft; hit by a projectile of approximately 75-millimeter caliber in a forward compartment - one sailor killed, several injured; departed Leyte 27 October for Hollandia repairs (~1 month); Bougainville, then Manus mid-December; participated in the 9 January 1945 Lingayen Gulf landings; antisubmarine convoy protection in the western Pacific until summer 1945; overhaul at Pearl Harbor from July 1945; returned to the U.S. late September; inactivation at Portland, Oregon; out of commission by March 1946, Columbia River Group, Pacific Fleet; named Antigo 15 February 1956; stricken 1 July 1960; 'disposed of in a manner unspecified.' Two battle stars as PC-470. 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 dct, 2 dcp.; cl. PC-461.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1960
- Population
- Lawley construction trades (1942); crew (1942-46, complement 65)
- Limitations
- Ship-specific history only; contains no asbestos or material content. DANFS dates the Leyte shell hit loosely within her 'eight-day stay' (the war diary dates it 22 October) and says she 'left Leyte on 27 October' (war diary shows underway 26 October at 1200) - variants in gaps. Displacement figure (280) is the light/standard figure; NavSource's 450 t is full load - both in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-01
-
[3]NavSource Online: Submarine Chaser Photo Archive, Antigo (PC 470) ex-PC-470 - designation timeline, specifications incl. propulsion, commanding-officer list, NVR 1949 note [other_primary]
- Locator
- NavSource 12/010470.htm header block, specifications block, commanding-officers block
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 27 February 1942 by George Lawley and Sons, Inc., Neponset, MA; launched 27 June 1942; commissioned USS PC-470, 31 July 1942; decommissioned March 1946 at Portland, Oregon and laid up in the Pacific Reserve Fleet, Columbia River Group; 'Naval Vessel Register of 1 January 1949 lists plan for decommissioning and placing in reserve as January 1947'; named Antigo 15 January 1956 (conflicts with DANFS 15 February 1956 - see gaps); struck from the Navy Register 1 July 1960; '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 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. 832281 and 832282), Westinghouse single reduction gear, two shafts. Commanding officers listed: LT R. E. Parker USNR (31 July 1942), LTJG J. C. Dunn USNR (1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1960
- Population
- Lawley construction trades (1942); crew (1942-46)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track NVR/DANFS but conflict on the 1956 naming date (15 Jan vs DANFS 15 Feb) and displacement (450 t vs DANFS 280). Armament list differs from the DANFS spec block (likely later-fit configuration; the war diary confirms 3"/50, 40mm, and 20mm aboard in 1944-45). Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-02
-
[4]NARA, USS PC-470 - War Diary, 10/11-26/44, NAID 78647024 (RG 38, WWII War Diaries; microfilm serial 92835, serial 185-44; submission letter dated 4 November 1944 signed by CO F. C. Broadway; 3 scanned images, digitized online) [other_primary]
- Locator
- NARA NAID 78647024, Enclosure (A) War Diary pp. (1)-(2); submission letter PC470/A12-1/185-44
- Finding type
- vessel_history
- Finding
- Primary wartime record for this hull, digitized and read: 11 October 1944 underway from Seeadler Harbor, Manus, as member of Task Unit 79.11.3 screening forces en route to invade Leyte; 20 October formed Task Unit 79.7 of control vessels for the assault, approached Yellow 1/Yellow 2/Violet 1/Violet 2 beaches, at 1351 assumed duties of Senior Control Vessel for the unloading phase; 22 October 'Hit at 0410 by enemy artillery shell or mortar port side of compartment A-204-L, Frame 29' - fire extinguished, degaussing/power/light/fire/flushing lines severed, one casualty transferred to USS Cavalier (APA-37) and reported expired at 1210, all damaged lines except degaussing restored by 1600; 23 October secured as Senior Control Vessel, shifted to LST-anchorage perimeter screening; 25 October engaged a 'Kate' with 40mm/20mm (destroyed jointly with LST-991) and a 'Frances' bomber (3"/50 hits observed, crashed ~800 yards off the starboard quarter); 26 October surprise raid (~5 Vals, 3 Judys, twin-engine bombers, Tonys/Oscars) - bomb fragments pierced compartment C-205-E (frame 109, waterline) and A-105-1L (frame 50, port), temporary patch over flooding; 1200 underway for Hollandia in the screen of Task Unit 79.14.9. Ammunition expenditure: 76 rounds 3"/50 AA, 433 rounds 40mm, 3555 rounds 20mm.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-10-11 to 1944-10-26
- Population
- PC-470 crew (Oct 1944, complement ~65); casualty transferred to USS Cavalier (APA-37)
- Limitations
- Primary operational record; contains no asbestos or material content. Confirms compartment-level battle damage to this hull (frames 29, 109, 50) - relevant to where wartime repairs disturbed original structure - but the diary does not describe repair materials. Dates the fatal hit 22 October and departure 26 October at 1200, vs. DANFS's looser 'eight-day stay'/'27 October' framing - variants carried in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-03
-
[5]NARA, USS PC-470 - War Diary, 12/27/44 to 2/18/45, NAID 139905068 (RG 38, WWII War Diaries; roll A1446, microfilm serial 110471; submission letter dated 20 February 1945 signed by CO W. J. Stone; 4 scanned images, digitized online) [other_primary]
- Locator
- NARA NAID 139905068, Enclosure (A) War Diary pp. (1)-(3)
- Finding type
- vessel_history
- Finding
- Primary wartime record for this hull, digitized and read: 27 December 1944 underway from Seeadler Harbor in TU 79.11.3 screening TG 79.5/79.6 to Lingayen; 7 January 1945 air contacts in northern Mindoro Strait (fired 40mm/20mm, no hits observed); 9 January in Lingayen Gulf - assault disposition at 0150, station astern of LST Flotilla Six, three 'Judy' bombers attacked (one destroyed by combined fire, one suicide-dived into USS Portland, one escaped); at 1005 the commander of LST Flotilla Six embarked with staff to direct unloading of LSTs and LSMs on crimson and yellow beaches; 12 January fired on an unidentified bomber; 20 January assigned TU 78.1.23 patrol/dispatch duty; 24-27 January moored alongside ARL-8 (repair ship) effecting repairs to hull damaged in several places by high-seas rolling during alongside fuel/water transfers; 29 January-9 February flagship for Commander Task Unit 78.1.1 at San Fabian anchorage; 9-11 February escort duty TU 78.11.20/78.11.18 Subic Bay to San Pedro Bay, Leyte; anchored berth 214 San Pedro Bay 18 February. Period ammunition expenditure: 18 rounds 3"/50 AA, 198 rounds 40mm, 330 rounds 20mm.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-12-27 to 1945-02-18
- Population
- PC-470 crew (Dec 1944-Feb 1945); embarked Comdr. LST Flotilla Six and staff (9-17 Jan 1945); ARL-8 repair personnel alongside (24-27 Jan 1945)
- Limitations
- Primary operational record; contains no asbestos or material content. Documents alongside-repair-ship (ARL-8) hull repairs in January 1945 - a maintenance event aboard this hull - but does not describe materials used. The CO's remark that 'PC's are too large and unwieldy' for dispatch-boat duty is recorded as written.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-04
-
[6]NARA, PC-470 muster rolls, 7/31/42-4/2/46, NAID 192301039 (RG 24, Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities; roll 5737; 281 scanned images, unrestricted) [other_primary]
- Locator
- NARA NAID 192301039 file-unit page (281 images, Fold3 scans)
- Finding type
- historical_record
- Finding
- The full-period muster rolls for this hull (commissioning through inactivation, 31 July 1942 - 2 April 1946) are digitized and unrestricted in the NARA catalog - 281 images constituting the complete personnel roster of the hull's commissioned era. Catalog record verified live; individual pages not read this session.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- All hands aboard PC-470, 1942-1946
- Limitations
- Archival lead only: establishes that a complete crew roster exists (useful for any future exposure-cohort work); contents not transcribed. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-05
-
[7]Shipbuilding History (T. Colton), George S. Lawley & Sons, Neponset MA - yard hull list (updated 2019-01-25) [other_primary]
- Locator
- shipbuildinghistory.com Lawley yard table, hull 1198 row and WWII 'Built in Neponset' section
- Finding type
- vessel_history
- Finding
- Yard-level build documentation: PC-470 was Lawley hull number 1198, delivered 31 July 1942 (matching the commissioning date), tabulated in the Neponset yard list as 'Named Antigo 1956, struck 1960.' The list places PC-470 in Lawley's PC-461-class run - hulls 1189-1198 = PC-461 through PC-470 - the yard also building PC-616-619, PC-1083-1086, and other wartime types including SC-class chasers (WWI) and LCI(L)s.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942
- Population
- Lawley Neponset construction trades (1942)
- Limitations
- Respected secondary compilation (Colton's shipbuilding-history tables), not a primary registry; used here for the yard hull number and build-run context. Yard closed 1945-46. Contains no asbestos content and no material data.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-06
-
[8]Mystic Seaport Museum, G. W. Blunt White Library, Lawley Family Collection (Coll. 279), 1839-1990, ca. 500 items [museum_official]
- Locator
- Mystic Seaport Coll. 279 overview (abstract, scope-and-content series list)
- Finding type
- historical_record
- Finding
- Archival lead for builder's records: the collection contains 'business papers of the George Lawley and Son, and F.D. Lawley ship yards, Located in South Boston, Neponset, and Quincy, Massachusetts. Business papers include vessel records; cost sheets, scantlings, owners, etc. and wage information; lists, time sheets and petitions.' Potential repository for hull 1198 construction records not found in public sources.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942 (build window within collection range 1839-1990)
- Population
- Lawley Neponset yard workers (to 1945-46 closure)
- Limitations
- Archival lead only: collection-level description verified live; no box/folder survey performed, and no confirmation that PC-470-specific papers survive. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-07
-
[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 (1942) and commissioned service era (1942-46).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (report); era coverage includes 1942-46
- Population
- Navy shipyard workers; shipboard personnel (program context)
- 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, re-confirmed 2026-10-03) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-08
-
[10]Era inference built on: DANFS spec block (PC-461 class); NavSource specifications (two Fairbanks Morse 38D8-1/8 opposed-piston diesels, 1,440 bhp each, Westinghouse single reduction gear, two shafts - no steam plant); GAO HRD-80-2 Navy asbestos-use era documentation (ev-08) [other_primary]
- Locator
- DANFS spec block; NavSource specifications block; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A PC-461-class submarine chaser built in 1942 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a small diesel combatant of this type and period were thermal insulation in machinery and accommodation spaces, diesel-engine and exhaust lagging, gaskets, valve packing, and electrical insulation in the confined hull volume. As a diesel-powered vessel she carried no boilers or steam turbines - the boiler/turbine lagging pathway of steam vessels does not apply.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1960
- Population
- Lawley construction trades (1942); crew (1942-46); alongside repair personnel (ARL-8, Jan 1945; Hollandia Oct-Nov 1944; Pearl Harbor overhaul Jul-1945)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for PC-470. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-09
-
[11]Batch-7845 search ledger (this record): live DANFS; NavSource (navsource.net); NARA war diaries NAID 78647024 and 139905068 (read as scans) and muster rolls NAID 192301039; shipbuildinghistory yard list; Mystic Seaport Coll. 279; GAO HRD-80-2 (blocked); NVR; secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-antigo-pc470-01 through -14 (see search_ledger)
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or litigation naming USS PC-470 / Antigo (PC-470) was found in the public sources searched - including a completed CourtListener sweep (four base queries run and classified 2026-10-03: zero opinion or docket hits for 'USS Antigo'; 'PC-470' returned only Penal-Code/name collisions, and the asbestos-qualified docket variant returned 2 non-vessel construction cases). The only 'asbestos aboard' material is law-firm marketing content (mesothelioma.net's patrol-boat listicle names USS PC-470 among listed hulls 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. Deck logs (RG 24) and any disposal/sale records are undigitized leads; hull fate after 1960 stricken is undocumented in Navy sources, so no disposal-era hazmat record could exist in the searched sources. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-antigo-pc470-10