Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
-
[1]research packet 907-packet.md (7 sources cited) [museum_official]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: MISMATCH (name mismatch
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Evidence ID
- uss-chardon-pc564-pkt-907-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, Chadron (PC 564) ex-PC-564 (construction, timeline, specifications, commanding officers, ROKN transfer) [other_primary]
- Locator
- NavSource 12/010564.htm header block, timeline, and specifications block (navsource.net/archives/ canonical URL verified live; /arkiv/ mirror path also serves)
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 25 January 1942 by Consolidated Shipbuilding Co., Bronx, NY; launched 12 April 1942; commissioned USS PC-564 2 July 1942. On 8 March 1945 PC-564 engaged German minesweepers M-412, M-432, M-442 and M-452 and nine smaller craft off Chaussey, France; on 9 March, outgunned and badly damaged, she outran the German force and grounded on the French coast at Pierre de Herpin light (15 men had prematurely abandoned ship, 14 captured by the German raiding force); French fishing boats aided the wounded and she was towed into St. Malo harbor the next day. Postwar: placed in service as a Naval Reserve Training vessel, 14th Naval District (Pearl Harbor); named Chadron 15 February 1956; decommissioned January 1959 at Honolulu and placed in the reserve fleet (contradicted by NARA deck logs - see ev-06); transferred to South Korea 22 January 1964 at Guam as Seoraksan (PC-709); decommissioned and struck from the Navy Register 12 January 1974; fate unknown. Specs: 280 t. lt / 450 t. fl; 173'8" x 23' x 10'10"; 20.2 kts; complement 65; 1x3"/50 DP, 1x40mm, 3x20mm, 2 rocket launchers, 4 depth charge projectors, 2 depth charge tracks; 2x Fairbanks Morse 38D8-1/8 diesels (1,440 bhp; serials 832273/832274), Westinghouse single-reduction gear, 2 shafts. Commanding officers listed include LT L. B. Ard USNR (1945), LT Percy Sandell USNR (1945), LT J. A. Merritt III USN (1953-54), LT C. L. R. Anderson USN (Jul 1954), LT C. V. Lavin USN (1956-59).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1974
- Population
- Consolidated Shipbuilding construction trades (1942); wartime crew ~65; postwar crew/reserve-training population at Pearl Harbor; ROKN crew (1964-c.1974)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry; milestone items are corroborated here by NARA/NHHC where noted but the January 1959 decommissioning date is contradicted by NARA digitized deck logs running through September 1962 (see ev-06 and gaps). Page states 'There is no DANFS history available for Chadron (PC-564).' Contains no asbestos content. Casualty figures as summarized differ slightly from the after-action-derived account (see ev-05/ev-07 and gaps).
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-01
-
[3]NHHC online image catalog, USN 479855 - 'USS Chardon (PC-564) underway during fleet exercises', original date 1951-05-09, National Archives-sourced photograph [other_primary]
- Locator
- NHHC image catalog page, title/caption/accession fields (catalog # USN 479855)
- Finding type
- vessel_history
- Finding
- NHHC catalog record for a National Archives-held official Navy photograph of this hull underway during fleet exercises, 9 May 1951 - confirming continued commissioned service at that date and the hull's postwar active status. The NHHC catalog title spells the name 'Chardon' - the variant spelling this record carries as its display name (the official 1956 naming and NARA cataloging read 'Chadron' - see ev-06/ev-08).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1951
- Limitations
- Single-image catalog record; no service narrative, no asbestos content. The NHHC 'Chardon' spelling conflicts with the April 1956 All Hands official naming list and NARA deck-log cataloging, which both read 'Chadron' - the catalog title may propagate a transcription variant; documented rather than silently resolved.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-02
-
[4]NHHC online image catalog, 80-G-257287 - 'Normandy Invasion, June 1944. USS Ancon (AGC-4), command ship for the Omaha Beach landings, stands offshore on 7 June 1944. USS PC-564 is in the foreground.' [other_primary]
- Locator
- NHHC image catalog page 80-G-257287 (caption text); also carried on NHHC's USS Ancon (AGC-4) photo page
- Finding type
- vessel_history
- Finding
- NHHC-curated official photograph places this hull off Omaha Beach on 7 June 1944 in company with amphibious command ship USS Ancon (AGC-4) - photographic documentation of her Normandy control-vessel service described in her surviving report of operations (NARA NAID 78565841, ev-05).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-06-07
- Population
- Wartime crew (~65)
- Limitations
- Photographic presence documentation only - establishes location and date, not tasking detail (which comes from the vessel's own report, NAID 78565841). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-03
-
[5]NHHC H-Gram 039 (published 13 February 2020), section 'The Worst Christmas Story Ever: The Sinking of SS Leopoldville and the loss of 763 U.S. Soldiers on 24 December 1944' [other_primary]
- Locator
- H-Gram 039, Leopoldville section (paragraph on rescue forces)
- Finding type
- vessel_history
- Finding
- NHHC official history publication documents this hull's role in the Leopoldville rescue: when the Belgian troopship (carrying 2,235 men of the U.S. 66th Infantry Division) was torpedoed by U-486 five miles short of Cherbourg on 24 December 1944, HMS Brilliant rescued about 500 soldiers, the U.S. tug ATR-3 rescued 69, 'and PC-564 and PT-461 also contributed to the rescue of a further 1,400 U.S. soldiers.' 763 U.S. soldiers perished. Secondary narrative (which this record does not independently evidence) describes PC-564 tying alongside the settling troopship to take men directly aboard under Lt. James E. Spencer, USNR.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-12-24
- Population
- Wartime crew; ~2,235 embarked troops of 66th Infantry Division aboard Leopoldville
- Limitations
- H-Gram documents the rescue contribution but does not break out PC-564's individual count within the 1,400 shared with PT-461. No asbestos content. Spencer's command tenure and the alongside-rescue detail rest on secondary sourcing (laststandonzombieisland citing the vessel's war diary and survivor accounts).
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-04
-
[6]NARA digitized textual records for this hull: NAID 78531789 'USS PC-564 - War Diary, 3/1/44 to 4/30/44' (67 images); NAID 78638457 'USS PC-564 - War Diary, 5/1-31/44'; NAID 78565841 'USS PC-564 - Report of Operations, Period 6/5-17/44 - Invasion of Normandy, France' (2 images); NAID 139923395 'USS PC-564 - Rep of act off Granville, France, with German Naval Units, night 3/8-9/45' (9 images) - all WWII War Diaries series, digitized via Fold3 [other_primary]
- Locator
- catalog.archives.gov/id/78531789 ; /id/78638457 ; /id/78565841 ; /id/139923395
- Finding type
- historical_record
- Finding
- This hull's own wartime reports survive digitized at NARA (catalog titles verbatim): 'USS PC-564 - War Diary, 3/1/44 to 4/30/44' (NAID 78531789, 67 images); 'USS PC-564 - War Diary, 5/1-31/44' (NAID 78638457); 'USS PC-564 - Report of Operations, Period 6/5-17/44 - Invasion of Normandy, France' (NAID 78565841, 2 images); 'USS PC-564 - Rep of act off Granville, France, with German Naval Units, night 3/8-9/45' (NAID 139923395, 9 images - Lt. Percy Sandel Jr., USNR's after-action report). Per the published secondary account quoting these documents (laststandonzombieisland), the March-April 1944 diary covers her Atlantic crossing in convoy NY-78 (a 25-day 'Pickaback' railway-car-barge convoy New York to Plymouth; PC-564 chased loose barges, ran ASW sonar lookout, served as convoy mail ship) and the report of operations covers her Normandy service (departed Portland 0300 on 5 June as guide for Convoy Group 2 (O-2A); control vessel for Assault Group O-3 off Easy Red sector, Omaha Beach; control vessel off Easy White through 12 June; ASW/E-boat screen for T.G. 122.4 through 17 June); the Granville report records the 3-inch gun jamming after one round, the bridge gutted by an 8.8 cm shell, the engine room disabled, and the ship beached near Pierre de Herpin light with 14 dead, 11 wounded, and 14 missing/mostly captured.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-03 to 1945-03
- Population
- Wartime crew (~5 officers, 60 men per after-action-derived account)
- Limitations
- Archival lead: catalog records and page counts verified live (catalog.archives.gov, JS-rendered pages scraped); the document images themselves are Fold3-hosted and were not page-reviewed this session - content description draws on the catalog titles plus the published secondary account quoting the after-action report at length (laststandonzombieisland, which reproduces Sandel's report and damage list). Casualty counts vary slightly across sources (see gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-05
-
[7]NARA RG 024 deck logs, monthly file units cataloged 'Chadron (PC-564)' - e.g. NAID 214350143 (January 1956), NAID 296969468 (January 1959), NAID 173750824 (September 1962) [other_primary]
- Locator
- catalog.archives.gov search 'PC-564' and 'Chadron' - file units under RG 024 deck logs (series 594258), individual NAIDs listed
- Finding type
- historical_record
- Finding
- CORRECTION: NARA's digitized deck-log run for this hull spans at least January 1956 through September 1962 - monthly file units exist for 1959, 1960, 1961, and into September 1962. NavSource's timeline reads 'Decommissioned in January 1959 at Honolulu, HI and placed in the reserve fleet,' which a live deck log cannot follow: the primary log series demonstrates the hull remained in service well past January 1959 and corroborates the secondary-source decommission/strike at Honolulu on 1 November 1962 (citing CNO direction). The same cataloging documents the official spelling 'Chadron' for the post-1956 name.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1956-1962
- Population
- Postwar crew and reserve-training population, Pearl Harbor (1956-1962)
- Limitations
- The deck-log range is established by catalog search sampling (file units 'Chadron (PC-564) - [month year]', RG 024 series 594258) - earliest unit located is January 1956; whether units for 1942-1955 exist undigitized or in another series was not resolved this session. 'In service' as a Naval Reserve training craft still produced deck logs, so the run demonstrates active status, not necessarily continuous in-commission status in the strict sense. Log content not page-reviewed.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-06
-
[8]U.S. Navy Memorial, Navy Log - PC-564 entry ('Date Lost: Friday, March 9, 1945 - E-Boat Engagement off Normandy') with Lost at Sea log listing 12 named sailors; corroborated by Patrol Craft Sailors Association casualty table entry 'PC 564 - Damaged By German E-Boats, France - 03-09-45' (ww2pcsa.org) [museum_official]
- Locator
- navylog.navymemorial.org/pc-564 (entry + Lost at Sea log, 12 names); ww2pcsa.org/patrol-craft.html casualty table
- Finding type
- historical_record
- Finding
- Memorial documentation of this hull's 9 March 1945 losses: the Navy Memorial's Lost at Sea log lists 12 sailors (Sea 2c Robert Antall; Sea 2c Wilford Bagwell; SC 3c John Benesvich; Sea 1c Lucien Lacroix; Sea 1c Ernest Lightfoot; SOM 2c Robert Moore; Sea 2c James Newman; Lt(jg) Travis Page; GM 3c Anthony Piombing; RM 3c Daniel Riley; MOMM 3c Clarence Rounseville; SK 2c Robert Rowland), and describes the action as an 'E-Boat Engagement off Normandy' followed by grounding at Pierre de Herpin light, French fishing boats aiding the wounded, and tow into St. Malo harbor - consistent with the NavSource timeline and the NARA after-action record.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-03-09
- Population
- 12 named sailors killed; wartime crew
- Limitations
- Memorial roster, not a casualty adjudication: the after-action-derived account (ev-05) counts 14 dead (2 officers + 12 men) plus 14 missing/mostly captured, so the 12-name log appears to understate or differently scope the dead (see gaps). 'E-boat' labeling differs from NavSource's minesweeper designations - the raiding force mixed minesweepers, artillery barges, launches and a tug. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-07
-
[9]All Hands magazine (Bureau of Naval Personnel), April 1956 issue, article 'Cities Go on Patrol' - scan of official publication via mirror PDF (pdftotext-extracted) [other_primary]
- Locator
- All Hands, April 1956, 'Cities Go on Patrol' - PC naming list, PC-564 line
- Finding type
- vessel_history
- Finding
- CORRECTION/naming documentation: the official Navy magazine's report of the February 1956 patrol-vessel naming wave - 'Patrol vessels, which previously were known only by hull numbers, will now be recognized by individual names, after cities of the United States. The names assigned to 141 submarine chasers, escorts and rescue escorts... were chosen from cities with a population between 2500 and 107000. The change, which became effective in February' - prints this hull's assigned name as 'PC-564-Chadron'. The official spelling is therefore Chadron (consistent with NARA deck-log cataloging and NavSource); the NHHC photo-catalog spelling 'Chardon' is the minority variant this record's display name follows (per batch roster and NHHC catalog title).
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1956
- Limitations
- Source is a mirror-hosted scan of an official issue; the OCR extraction is rough in places ('PC486->larper' for Harper etc.) but 'PC-564-Chadron' reads cleanly. Namesake town not stated in the article - candidates are Chadron, Nebraska (matching spelling) or Chardon, Ohio (matching the variant spelling); unresolved. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-08
-
[10]shipbuildinghistory.com (T. Colton), Consolidated Shipbuilding yard table, Morris Heights NY - hull 3116 = PC 564 [other_primary]
- Locator
- shipbuildinghistory.com Consolidated yard table, row for hull 3116
- Finding type
- vessel_history
- Finding
- Trade-history yard table corroborates the builder and completion: Consolidated Shipbuilding Corp., Morris Heights (Bronx) yard, hull number 3116, 'PC 564, US Navy, Sub Chaser, 463d, 173[ft], 2-Jul-42' - matching the NavSource commissioning date. The yard grew from the 1896 merger of Gas Engine & Power Co. (Morris Heights, est. 1885) and Charles L. Seabury Co.; ceased active boatbuilding in 1958.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942
- Population
- Consolidated Shipbuilding construction trades (1942)
- Limitations
- Volunteer-compiled trade history - secondary but widely used for yard-hull data; consistent with NavSource on the build record. The same table row reads 'To Korea 1952 as Sol Ak (PC 709), struck 1974' - the 1952 transfer date is contradicted by NARA deck logs and the 1956 All Hands naming (the hull remained U.S. Navy at Pearl Harbor through September 1962); carried as a documented error in gaps, likely conflating the earlier Korean-War-era PC transfers. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-09
-
[11]Era inference built on: NavSource spec block (PC-461-class diesel plant, 2x Fairbanks Morse 38D8-1/8, Westinghouse reduction gear, 2 shafts); PC-461-class wartime construction context (341 built 1941-1944); GAO HRD-80-2 Navy asbestos program documentation (ev-10) [other_primary]
- Locator
- NavSource specifications block; PC-461-class construction record
- Finding type
- asbestos_application
- Finding
- A 1942-built steel patrol craft inside the Navy's documented asbestos-use era would have carried the period-standard small-combatant applications: thermal insulation around machinery, diesel-exhaust lagging, gaskets, valve packing, and electrical insulation in the confined hull. As a diesel-only vessel she carried no steam plant - the boiler and turbine lagging pathway of steam warships does not apply to this hull.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1974
- Population
- Consolidated construction trades (1942); crew (1942-1962); repair trades at Plymouth/East Coast 1945 and Pearl Harbor 1946-1962; ROKN maintenance (1964-c.1974)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, purchase record, or work package located for PC-564. Names era-standard application types, not confirmed installed materials; no quantities; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-10
-
[12]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979; released Oct 22, 1979) [gao]
- Locator
- GAO product page HRD-80-2, Highlights block (live via firecrawl 2026-10-03)
- Finding type
- gov_survey
- Finding
- GAO documented (product-page Highlights): Navy asbestos use in ships and the cost of removal; the Navy's 1975 policy removed/replaced only insulation that was damaged or had to be removed for repairs, modified in 1979 to selectively replace asbestos insulation in high-maintenance areas - confirming Navy-wide asbestos shipboard use spanning this hull's entire U.S. service era (1942-1962). Fieldwork yards were Long Beach and Norfolk Naval Shipyards.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Study period
- 1979
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level documentation; fieldwork was limited to Long Beach and Norfolk - not this hull's yards. Supports era context only, not any fact specific to PC-564. Full report PDF linked from the product page (not page-reviewed).
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-11
-
[13]Batch-7939 search ledger (this record): NavSource; NHHC image catalogs (USN 479855; 80-G-257287); NHHC H-Gram 039; NARA catalog (war diaries, operations report, after-action report, RG 024 deck-log run); U.S. Navy Memorial Navy Log; All Hands Apr 1956; shipbuildinghistory.com yard table; GAO HRD-80-2; secondary web sweeps [other_primary]
- Locator
- search_ledger rows sl-uss-chardon-pc564-01 through -13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming PC-564/Chardon/Chadron was found in the public sources searched. The only 'asbestos aboard' material surfaced by web sweeps is law-firm marketing content (e.g., a levy-law yard-exposure page for Consolidated Shipbuilding) asserting exposure without primary sourcing - excluded by source policy. Secondary and primary sources document construction, wartime service, damage, repairs, and disposal but none address materials or asbestos aboard.
- 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. CourtListener status for this session is recorded in search_ledger (fleet pacing may have limited the run); the litigation sweep should be treated as open unless the ledger shows completed queries. Digitized NARA records (war diaries, deck logs) were catalog-verified but not page-reviewed for material mentions; 1945 Plymouth repair records, Pearl Harbor maintenance history, and any ROKN-era records are undigitized leads.
- Atlas source
- true
- Evidence ID
- ev-uss-chardon-pc564-12