Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]research packet 907-packet.md (4 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-563-pc563-pkt-907-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, PCC-563 ex-PC-563 page (compiled official data: construction dates, operations, reclassification, striking, disposal, specifications, commanding-officer roster) [other_primary]
- Locator
- navsource.net/archives/12/010563.htm - full page including specifications block, commanding-officer table, and embedded AP wire-photo caption
- Finding type
- vessel_history
- Finding
- Compiled record for this hull: laid down 20 December 1941 by the Consolidated Shipbuilding Co., Bronx, NY (a contemporaneous 20 December 1941 AP wire photo documents the keel-laying at the Morris Heights yard and a unit cost of about $1,000,000); launched 17 March 1942; commissioned USS PC-563, 17 June 1942 at the Atlantic Basin Iron Works, Brooklyn, NY; Asiatic-Pacific theater service - Leyte landings 28 October - 18 November 1944, and assault and occupation of Okinawa Gunto 1 April - 20 May 1945; reclassified control submarine chaser PCC-563, 20 August 1945; struck from the Naval Register 17 April 1946; sold 29 November 1946 to Foss Tug and Barge Co., Tacoma, WA for possible salvage of main engines (Naval Vessel Register of 1 January 1949 lists the sale as January 1947); registered in 1948 to Martinolich Shipbuilding Co., San Diego, CA for use as the fishing boat M/V Doris Neu; scrapped in 1948. Specifications: 280 t light / 450 t full, 173'8" x 23', draft 10'10", 20.2 kt, complement 65; armament one 3"/50 dual-purpose 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 832263 and 832264) through Westinghouse single reduction gear, two shafts. Seven commanding officers listed (all USNR), the last - LT Ray W. Tripp - ending 15 March 1946. Page states explicitly: 'There is no DANFS History currently available for PCC-563.'
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Consolidated Shipbuilding construction trades 1941-42; Atlantic Basin Iron Works commissioning/fit-out activity 1942; wartime crew (complement 65)
- Limitations
- NavSource is a volunteer archive compiling official records (NVR entries, commissioning data, photo captions); it documents service history and machinery, not materials or asbestos content. The two disposal dates it prints (29 Nov 1946 sale; 'January 1947' in the 1 Jan 1949 NVR) conflict - carried in gaps. No explicit decommissioning date is printed; the last CO's tour ending 15 March 1946 is the basis for the inferred date.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-563-pc563-01
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[3]NARA Catalog, RG 24 'Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities' (NAID 594996), file unit 'PC-563, 6/17/42-3/15/46' (NAID 192663222, 306 digitized images); plus 12 digitized 'USS PC-563 - War Diary' monthly file units, October 1944 - August 1945 (e.g., NAID 140002618, April 1945, 13 images), in the WWII War Diaries series [other_primary]
- Locator
- catalog.archives.gov search 'PC-563' - file units NAID 192663222 (muster rolls); NAIDs 78708512, 139771439, 139852921, 139847096, 139905073, 139971824, 140002618, 140033660, 77463658, 101767260, 83558946 (war diaries 10/44-8/45)
- Finding type
- historical_record
- Finding
- Digitized primary-source holdings exist for this hull: a 306-image muster-roll file unit spanning 17 June 1942 - 15 March 1946 (the full commissioned life - the end date corroborates the inferred 15 March 1946 decommissioning), and monthly war diaries covering October 1944 through August 1945, the period containing her documented Leyte and Okinawa operations and her August 1945 PCC reclassification.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Wartime ship's company documented in muster rolls; commanding officers in war diaries
- Limitations
- Catalog metadata verifies that the records exist and are digitized; the page images were not individually reviewed, so operational and personnel contents are asserted only at catalog level. No war diaries for June 1942 - September 1944 were located in the catalog - whether they were filed or survive is undocumented. None of these records has been examined for asbestos content, and war diaries/muster rolls ordinarily contain none.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-563-pc563-02
-
[4]shipbuildinghistory.com (T. Colton), 'Consolidated Shipbuilding, Morris Heights NY' construction table - hull 3115: 'PC/PCC 563', US Navy, Sub Chaser, type 463d, 173 ft, 17-Jun-42, 'Sold to Foss 1946, then to Martinolich 1948 as Doris Neu' [other_primary]
- Locator
- Consolidated construction table, WWII section, row '3115'
- Finding type
- vessel_history
- Finding
- Independent yard-production corroboration for this hull: Consolidated Shipbuilding hull number 3115 was PC/PCC-563, a 173-ft sub chaser delivered/commissioned 17 June 1942; the same row records the disposal chain - sold to Foss in 1946, then to Martinolich in 1948 as Doris Neu - matching the NavSource record.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Consolidated Shipbuilding construction trades 1941-42
- Limitations
- Secondary maritime-history compilation, not an official record - used as corroboration only. Documents construction and disposal chain; says nothing about materials or asbestos. '463d' is the yard's design-group notation, not an asbestos or class datum.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-563-pc563-03
-
[5]'Ships of the U.S. Navy, 1940-1945 - Submarine Chasers' (HyperWar/ibiblio transcription of the postwar Navy compilation): PC-461-class specifications block and vessel listing (PC-563-564, commissioned 1942-44) [other_primary]
- Locator
- ships-sc.html, 'PC-461 Class' specifications block and vessel table
- Finding type
- vessel_history
- Finding
- Class-level documentation for the PC-461 design group: displacement 284 tons, length 173'8", beam 23', draft 10'10", speed 21 kt, complement 65; armament one 3"/50, one 40 mm, five 20 mm, two depth-charge throwers (Mousetraps), two K-guns, two depth-charge racks; propulsion diesel engines, 2 screws, 2,280 shaft hp. PC-563 appears in the compilation's vessel list (row 'PC-563-564', commissioned 1942-44).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1940-1945
- Population
- PC-461-class crews generally
- Limitations
- Class-level compilation data; individual hulls deviated in fit (NavSource's per-ship figures - 280 t, 20.2 kt, different armament counts - supersede the class block for this hull). Documents design intent, not materials or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-563-pc563-04
-
[6]GAO HRD-80-2, 'Navy's Efforts to Protect Workers From Asbestos Exposure' (18 October 1979; product page and full report PDF) [gao]
- Locator
- gao.gov product page + full text (hrd-80-2.pdf): cover letter 'all ships contain some asbestos...'; Navy response section on 1971-75 specification changes and NAVSEAINST 5100.2
- Finding type
- gov_survey
- Finding
- Government documentation of the Navy's asbestos era that brackets this hull's construction: per the report, thermal insulation was the Navy's major shipboard asbestos use, all ships contained some asbestos in components such as clutches and electric cables, insulation specifications changed toward little/no asbestos only from 1971, were asbestos-free by late 1973, and the formal no-asbestos policy (NAVSEAINST 5100.2) issued 24 October 1975. A hull built December 1941 - June 1942 sits entirely inside the pre-substitution era.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (report); policy era 1971-1979
- Population
- Navy shipyard workers (program-level context)
- Limitations
- Program-level 1979 document: its fieldwork yards were Long Beach and Norfolk Naval Shipyards and it names no patrol craft or this hull. It establishes era policy and typical shipboard applications, not the presence, absence, quantity, or location of asbestos aboard PC-563. Report postdates the hull's scrapping by 31 years.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-563-pc563-05
-
[7]NavSource machinery specification for this hull (2x Fairbanks Morse 38D8 1/8 diesels, no boilers) + GAO HRD-80-2 era policy + 'Ships of the U.S. Navy 1940-1945' class data [other_primary]
- Locator
- NavSource specifications block (propulsion line); GAO HRD-80-2 full text; ships-sc.html class block
- Finding type
- asbestos_application
- Finding
- Era/design inference for a diesel-powered submarine chaser built at Consolidated Shipbuilding in the peak asbestos years 1941-42: NO boilers or steam plant - the steam-lagging pathway does not apply; plausible asbestos applications on this type concentrate in diesel-engine and exhaust-system insulation, gaskets and packing throughout the engineering spaces, electrical insulation and cable, deck coverings, accommodation-space insulation, and brake/friction linings on winches and windlass. GAO HRD-80-2 documents that the Navy's asbestos-substitution program did not begin until 1971-75 - decades after this hull was scrapped in 1948.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Consolidated Shipbuilding construction trades 1941-42; Atlantic Basin Iron Works fit-out activity 1942; wartime crew; Foss/Martinolich-yard workers 1946-48
- Limitations
- Class/era and design inference only - no hull-level material schedule, insulation spec, or survey exists in the public record for this ship, and none can be generated for a hull scrapped in 1948 except through NARA construction records. Does not establish presence, absence, or quantity of ACM; the ship's post-Navy conversion toward a fishing vessel (if completed) is undocumented.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-563-pc563-06
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[8]Batch-7938 search ledger (this record): NHHC DANFS (absent - confirmed); NavSource full record; NARA catalog file units; shipbuildinghistory.com yard table; HyperWar Navy compilation; GAO HRD-80-2; CourtListener sweep status [other_primary]
- Locator
- search_ledger rows sl-uss-pc-563-pc563-01 through sl-uss-pc-563-pc563-08
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, construction material schedule, or abatement contract naming PC-563/PCC-563 was found in the public sources searched, and no litigation naming the hull surfaced in secondary web sweeps (see search_ledger). The CourtListener opinion/docket sweep itself was not executable this session - the fleet pacing budget was spent on every attempt - so litigation status is open, not negative. There is no DANFS entry for this hull at all - the candidate NHHC URL returns 404 and the hazegray DANFS patrol-vessel index lists neighboring hulls (PC-565, PC-566, PC-567...) but not PC-563 - so even baseline official narrative coverage is absent.
- 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 - a 1941-42 diesel-powered hull is consistent with retained era materials. The hull was scrapped in 1948, so no present-day survey can exist; the only path to ship-specific material data would be NARA construction/delivery records (RG 19 contract files, BuShips general information books). Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-563-pc563-07