Evidence
12 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-12).
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[1]research packet bx-packet.md (2 sources cited) [nhhc_danfs]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED. The
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-chowanoc-at100-pkt-bx-packet-md
-
[2]DANFS, 'Chowanoc' (AT-100/ATF-100) - NHHC canonical page (live URL returned 404 on 2026-09-26; verbatim text verified via Internet Archive Wayback capture 2024-05-26; the print-edition transcription at HyperWar/ibiblio differs on several dates - see correction row ev-uss-chowanoc-at100-08) [nhhc_danfs]
- Locator
- DANFS 'Chowanoc' entry, type line and full text; canonical URL https://www.history.navy.mil/research/histories/ship-histories/danfs/c/chowanoc.html (NHHC link rot - standing issue since Batch-01)
- Finding type
- vessel_history
- Finding
- DANFS establishes identity, construction, and the service spine: launched 1943-08-20 by Charleston Shipbuilding and Dry Dock Co., Charleston SC (sponsor Mrs. H. Hezlip); commissioned 1944-02-21, Lt. R. F. Snipes. Type line (NHHC online): dp. 1,240; l. 205'; b. 38'6"; dr. 15'4"; s. 16 k.; cpl. 85; a. 1 3"; cl. Cherokee. WWII: cleared Norfolk 1944-04-04; Pearl Harbor tug duty to 1944-06-12; Kwajalein 1944-06-25, Marshall Islands towing/salvage; Marianas operation (Eniwetok to Guam and Saipan); salvage tug for the Leyte invasion 1944-10-20 to 24 and through the Battle for Leyte Gulf (heavy air attack, aided in downing aircraft); Lingayen Gulf January 1945, including towing the damaged Kitkun Bay (CVE-71) on 1945-01-08/09; salvage tug at Lingayen to 1945-02-26; Ulithi overhaul; San Pedro Bay from 1945-05-24; Third Fleet service group for final operations against Japan. Postwar: Guam/Okinawa/Marshalls to 1946-02-27 Pearl Harbor; JTF-1 for Operation Crossroads, operating Bikini-Kwajalein; 1947-1950 Hawaiian Islands, San Francisco, San Diego, Samoa, Guam, Saipan, Eniwetok, Kwajalein; 1950-12 to 1952-04 Alaskan tug and salvage; San Diego local ops; Long Beach to Yokosuka harbor tug 1953-03-28, returned 1953-10-29; second Far Eastern tour 1954-1955; west coast/Alaska/Pearl Harbor tows to March 1959, five months Japan; Alaskan tour May-August 1960; west coast for the remainder of 1960. Four WWII battle stars and one Korean War battle star credited.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1943-1960
- Population
- Ship's company (~85); shipyard/support personnel at documented stations (Charleston SC build; Pearl Harbor; Ulithi overhaul; Yokosuka; San Diego/Long Beach; Eniwetok)
- Limitations
- Authoritative for identity, dates, stations, and header specifications. Contains no asbestos, insulation-material, abatement, or condition information whatsoever - supports no asbestos claim. The HyperWar transcription of the printed volume contains typographical date errors (1963/1969, 16 May, bracketed '1957' Hardtack note) that the corrected NHHC online text and the ship's own declassified report resolve - flagged via ev-uss-chowanoc-at100-08.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-01
-
[3]Corn, Jacqueline Karnell, and Jennifer Starr, 'Historical perspective on asbestos: Policies and protective measures in World War II shipbuilding,' American Journal of Industrial Medicine 11(3):359-373 (1987) [other_primary]
- Locator
- Journal article; citation carried at the same scope as BATCH-01/BATCH-05/BATCH-768 records
- Finding type
- asbestos_application
- Finding
- Peer-reviewed historical study documents that asbestos was used extensively as a fireproofing and insulating material in U.S. shipbuilding during World War II, the era and procurement regime under which this 1943-44-built naval auxiliary was constructed, and that wartime demand drove unprecedented asbestos utilization in ship construction. For a diesel-electric fleet tug (no boilers), era-consistent asbestos applications would center on engine and exhaust insulation, gaskets, packing, electrical insulation, towing-winch brake linings, and compartment insulation rather than boiler lagging.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-26
- Study period
- 1943-1944 (construction); 1944-1977 (U.S. service)
- Population
- Construction trades (Charleston Shipbuilding and Dry Dock Co., 1943-1944); engine-room and maintenance crew
- Limitations
- Program/era-level documentation, not a hull record - the study does not name this vessel or this class. Asbestos presence aboard this hull is era inference, not ship-proven. Does not establish quantity, present-day presence, individual exposure, or causation. Diesel-electric caveat: no boiler/steam-system lagging applies to this plant.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-02
-
[4]NavSource Online, USS Chowanoc (ATF-100) ex-AT-100 service ship photo archive - specifications block, awards/ribbon table, campaign tables, commanding-officer list, photo captions, DANFS transcription [other_primary]
- Locator
- NavSource page 09/39/39100 - full page incl. ribbon precedence, campaign tables, spec block, photo captions
- Finding type
- vessel_history
- Finding
- NavSource service-ship archive supplies specification and award detail beyond the DANFS header: displacement 1,205 t (lt) / 1,675 t (fl); length 205'; beam 38'6"; draft 15'5" (lim); speed 16.5 kts; complement 5 officers + 80 enlisted; armament one single 3"/50 DP mount, two twin 40mm AA mounts, two single 20mm AA mounts; propulsion block lists as-built four General Motors 12-278A diesel-electric engines and modernized four Alco diesels driving four GE generators plus three GM 3-268A auxiliaries, single propeller 3,000 shp. Awards/campaigns: Navy Unit Commendation for service in Salvage, Fire Fighting, and Rescue Unit, Service Force 7th Fleet, Philippine Islands 1945-01-06 to 02-15; WWII Asiatic-Pacific campaigns itemized (Marianas Saipan 8/3-10 and Guam 8/3-15/1944; Leyte landings 10/20-11/22/1944; Lingayen Gulf landings 1/9-18/1945; 3d Fleet ops vs Japan July 1945); Korean Summer-Fall 1953 (5/1-3, 6/13-16 and 19, 7/9 and 11-22); seven Vietnam campaign periods spanning 1966-1973 (Counteroffensive; Phases II, V, VI, VII; Summer-Fall 1969; Winter-Spring 1970); Armed Forces Expeditionary Medal for Operation Frequent Wind and the Mayaguez operation; Humanitarian Service Medal (Frequent Wind). Decommissioned and struck 1977-10-01; transferred to Ecuador same day, cash sale under the Security Assistance Program, renamed BAE Chimborazo (RA-70). Photo captions document her with a yard oiler at Koje (Geoje) island, South Korea, in 1953; towing the decommissioned carrier Philippine Sea circa 1958; and the Chimborazo's 44th Ecuadorian commissioning anniversary 2021-10-01.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1943-2021
- Population
- Ship's company across 1944-1977 deployments; Ecuadorian Navy crew ~50 (secondary 2020 account)
- Limitations
- Reputable secondary archival compilation, not a primary record; its spec block conflicts with the print-edition DANFS type line on several figures (see ev-uss-chowanoc-at100-08). Contains no asbestos, materials, abatement, or condition-survey information - supports no asbestos claim. The 'current disposition' line ('active in commission in the Ecuadoran Navy') plus the 2021-10-01 photo caption is the basis of the Ecuadorian-service status; treat as documented to 2021, not a present-day verification.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-03
-
[5]U.S. Department of Defense / VA-era Nuclear Test Personnel Review compilation, 'U.S.S. Participation - Operations list' (ship participation by test operation and shot; mirrored copy) [other_primary]
- Locator
- Alphabetical ship lists under 'Able 7/1/1946 Bikini', 'Baker 7/25/1946 Bikini', and 'Butternut 5/12/1958 Enewetak' - 'Chowanoc' appears in each
- Finding type
- historical_record
- Finding
- The government ship-participation list for atmospheric nuclear weapons tests records Chowanoc at Operation Crossroads shots Able (1946-07-01, Bikini) and Baker (1946-07-25, Bikini) - corroborating the DANFS JTF-1 narrative - and at Operation Hardtack I shot Butternut (May 1958, Enewetak) under Task Group 7.3 - corroborating the declassified CO report (ev-uss-chowanoc-at100-05).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1946-07; 1958-03 to 1958-08
- Population
- Crew present during test support duties (Bikini 1946; Enewetak 1958)
- Limitations
- Verifies operation/shot participation only - radiological-era context, NOT an asbestos finding; establishes nothing about materials or asbestos exposure aboard. Cited via a mirrored copy on a third-party site; the underlying government compilation (NTPR participation records) is the authoritative form. The DTRA Operation Hardtack I report (DNA 6038F) and DTIC NTPR volumes are the canonical references - both block automated fetch as of this date.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-04
-
[6]USS Chowanoc (ATF-100) Commanding Officer, 'Operation Hardtack; Submission of Final Report' to Commander Task Group 7.3, serial Sara 08-53 (declassified scan via nuclearsecrecy.com document mirror, file 0411011.pdf) [other_primary]
- Locator
- 6-page PDF: cover memo (CO to CTG 7.3), Enclosure (1) Abstract of Activities (chronology 22 Mar - 10 Jul 1958), Enclosure (2) Final Radiological Safety Report
- Finding type
- historical_record
- Finding
- Declassified ship-generated record: the USS Chowanoc (ATF-100) commanding officer's 'Operation Hardtack; Submission of Final Report' to Commander Task Group 7.3 (enclosures: Abstract of Activities; Final Radiological Safety Report) documents the ship's Hardtack I work at Enewetok March-July 1958 - laying and retrieving YC/YG mooring-array legs for target ships and instrument arrays, mooring YC-8, standing by on station for the Wahoo shot 1958-05-16, towing equipment to Eniwetok Lagoon, and Umbrella-array instrument-cage recovery in June. Enclosure (2) records that no decontamination station use was needed and that a large percentage of the crew attended shipboard radiological-safety lectures before deploying. Confirms the Hardtack deployment as 1958 (the bracketed '1957' note in the print-DANFS mirror transcription is a transcriber addition and is wrong - see correction row).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1958-03 to 1958-07
- Population
- Crew during Enewetok deployment March-July 1958
- Limitations
- Primary ship document (declassified), hosted on a private document mirror; OCR is poor and serial block partially illegible, but content legibly establishes ship, task group, place, dates, and duties. Radiological-safety content documents radsafe training/exposure controls - it is NOT an asbestos record and establishes nothing about insulation materials aboard. 'BEST AVAILABLE COPY' markings on the scan.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-05
-
[7]ProPublica / VA-informed compiled ship list, 'Help ProPublica Research More Than 700 Navy Ships That Served in Vietnam' (entry for U.S.S. Chowanoc ATF-100) [other_primary]
- Locator
- Alphabetical ship list, Chowanoc entry
- Finding type
- regulatory
- Finding
- The ProPublica-compiled list of Navy ships that served in Vietnam (built from the VA/DoD herbicide-exposure ship list and Blue Water Navy Veterans Association records) carries the entry 'U.S.S. Chowanoc (ATF-100) - VA has no activities listed' - the ship's Vietnam theater service is recognized but no Agent Orange-qualifying activity is on file for this hull.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1966-1973 service; list current at compilation
- Limitations
- Government-adjacent exposure-presumption record for HERBICIDE (Agent Orange), not asbestos - it corroborates Vietnam theater service for this hull while showing no AO-qualifying activity on file. A secondary compilation of VA data, not the VA list itself; establishes nothing about asbestos conditions aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-06
-
[8]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 to automated fetch, HTTP 403; product-page description and search excerpt used)
- Finding type
- gov_survey
- Finding
- GAO documented the Navy's asbestos-protection program and reported the Navy's own account that all ships contain some asbestos in components such as clutches and electric cables, and that thermal insulation was the Navy's major use of asbestos aboard ships - the insulation regime in force during most of this hull's U.S. service era (1944-1977). Fieldwork was at Long Beach and Norfolk Naval Shipyards.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-26
- Study period
- 1979 (report); WWII-through-1970s insulation regime contextualized
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level 1979 review covering the Navy-wide asbestos regime during this hull's service years; not hull-specific and does not establish conditions aboard this vessel. Full text not retrieved (gao.gov blocks automated fetch) - content via product-page description and search excerpt, same handling as Batch-01/Batch-159 rows. Does not establish quantity, exposure, or causation.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-07
-
[9]DANFS print-edition transcription (HyperWar/ibiblio, atf100.html) vs. NHHC online text (Wayback 2024-05-26 capture) and the declassified USS Chowanoc Hardtack final report (ev-uss-chowanoc-at100-05) [nhhc_danfs]
- Locator
- HyperWar transcription, second-to-last paragraph and type line; NHHC online type line and same paragraph; nuclearsecrecy.com 0411011.pdf
- Finding type
- historical_record
- Finding
- Print-edition DANFS discrepancies resolved against the corrected NHHC online text and the ship's own declassified report: (a) ATF reclassification - print transcription reads '16 May' 1944; NHHC online and NavSource read 15 May 1944 (adopted). (b) Chronology - the printed paragraph gives 'sailed from Long Beach 28 March 1963' and 'March 1969 ... 6 months duty in Japan'; the corrected NHHC text reads 28 March 1953 and March 1959 / 5 months - the only readings consistent with the Korean-war narrative and the May 1960 Alaska sequence (adopted). (c) Type line - print reads l. 206', dr. 16'4", cpl. 86; NHHC online reads 205', 15'4", 85, matching NavSource/Wikipedia (adopted). (d) The bracketed sentence '[In 1957, Chowanoc deployed to the Marshall Islands in support of Operation Hardtack]' appears only in the HyperWar transcription as a transcriber-supplied note - the ship's own Hardtack final report documents the deployment as March-July 1958, making '1957' wrong.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1944; 1953-1960
- Limitations
- Resolves print/transcription-level discrepancies in favor of the corrected official text and a primary ship document. The '1957' Hardtack note is not in the NHHC online DANFS text at all - it is a bracketed HyperWar addition. No bearing on asbestos documentation.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-08
-
[10]Batch-2738 search ledger (this record): NHHC DANFS (live 404; Wayback capture); HyperWar print transcription; NavSource; shipbuildinghistory; NTPR operations list; declassified ship report; VA/ProPublica list; NARA/DPLA deck-log index; MARAD ShipHistory; NVR; NHHC FOIA CHR collection; CourtListener API v4 authenticated; web litigation sweep [court_record]
- Locator
- search_ledger rows sl-uss-chowanoc-at100-01 through sl-uss-chowanoc-at100-15
- Finding type
- litigation_documented
- Finding
- No qualifying ship-specific asbestos record or litigation located: no asbestos survey, abatement contract, hazmat disclosure, government report, or docketed case naming USS Chowanoc (AT-100/ATF-100) was found in the public sources searched. The authenticated CourtListener API sweep (v4, all queries run through the fleet pacing limiter) returned: 'Chowanoc' - 0 opinions, 0 dockets; '"Chowanoc" "ATF-100"' - 0 opinions; '"AT-100" Chowanoc' - 0 opinions, 0 dockets; 'Chowanoc asbestos' and 'Chowanoc mesothelioma' - 0 opinions; '"ATF-100"' - 0 opinions; '"ATF-100"' dockets returned 7 hits, ALL coincidental string matches in non-maritime matters (criminal, FOIA, pharmaceutical MDL, civil rights, bankruptcy, media litigation - 'ATF' Bureau-of-Alcohol-Tobacco-Firearms and form/file-number strings); 'Chimborazo' qualified search returned 25 opinions, ALL name collisions on the Ecuadorian surname/geography (Chimborazo Bank, Richmond VA neighborhood, person names) - none is the naval tug. Asbestos marketing sites do list 'USS Chowanoc (ATF-100)' in tugboat rosters (mesotheliomahelp.org, mesobook.com/mesotheliomabook.com) - banned sources, indexed for the collision audit only.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 2026-09-26
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a 1943-built naval auxiliary is era-consistent with asbestos-containing materials, and the hull remains in foreign naval service where no public survey, abatement, or disposal-hazmat record would be expected. CourtListener covers post-~1990s dockets and published opinions well but thinly covers unreported state-court asbestos filings; a complaint that never produced a published opinion or RECAP-captured docket would not appear here. Does not establish or defeat any exposure claim or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-09
-
[11]National Archives and Records Administration, digitized U.S. Navy deck logs (RG 24, post-1941 series, Archives II College Park) for Chowanoc (ATF-100), surfaced via DPLA items; NARA 'Navy Deck Logs Available in the National Archives Catalog' program page [other_primary]
- Locator
- DPLA items https://dp.la/item/68b9dd302fd072c890259c73991931fb (July 1962, NAID 172467986) and https://dp.la/item/2c4e2f2492392c5f3967c6ed682f0b69 (February 1970); NARA deck-log program page
- Finding type
- historical_record
- Finding
- NARA holds digitized primary records for this hull under Record Group 24, Logbooks of U.S. Navy Ships and Stations (Bureau of Naval Personnel): DPLA-surfaced catalog items include 'Chowanoc (ATF-100) - July 1962' (catalog.archives.gov id 172467986) and 'Chowanoc (ATF-100) - February 1970' - the Vietnam-era logs were scanned under the NARA-VA Blue Water Navy digitization program and are viewable online. The ship's declassified 1958 Operation Hardtack final report (cited at ev-uss-chowanoc-at100-05) is also scanned online. Archival leads not retrieved: WWII-era deck logs (1944-1946) are not on the digitized index and would be textual holdings at Archives II, College Park; Charleston Shipbuilding & Dry Dock Co. construction/outfitting records; the Security Assistance Program case file for the 1977 Ecuador transfer.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-26
- Study period
- 1962-1970 (digitized logs); 1944-1946 (undigitized lead)
- Limitations
- Holdings verified to exist and to be digitized/viewable; the log pages themselves were not reviewed line-by-line for asbestos or maintenance references - content is unknown until read. WWII-era (1944-46) logs do not appear on the digitized index. Nothing in this row is an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-10
-
[12]Tim Colton, shipbuildinghistory.com - Charleston Shipbuilding & Dry Dock yard table (hull no. 13) and auxat.htm US Navy ocean tugs index [other_primary]
- Locator
- Charleston yard table row '13 | ATF 100 | Chowanoc | US Navy | Tug | 1,240 | | 21-Feb-44'; yard-history paragraph (Navy control 1942); http://shipbuildinghistory.com/smallships/auxat.htm
- Finding type
- vessel_history
- Finding
- Builder documentation: Tim Colton's U.S. shipbuilding-history compilation lists Charleston Shipbuilding & Dry Dock, Charleston SC, as the builder, with Chowanoc as the yard's hull number 13 (ATF 100, U.S. Navy, delivered 21-Feb-44). The yard history documents that the Navy took control of the yard in 1942 and renamed it Charleston Shipbuilding & Dry Dock Co. - the wartime government-controlled context in which this hull was constructed. The same compilation's disposition field reads 'To Ecuador 1960 as Chimborazo (R-105)' - a typo on both the year (1977 documented) and the flag number (RA-70 documented); logged in gaps, not adopted.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-26
- Study period
- 1943-1944 (construction)
- Population
- Yard workforce, Charleston Shipbuilding & Dry Dock, 1943-1944
- Limitations
- Reputable secondary shipbuilding compilation, not a primary record - corroborates builder and delivery date against DANFS and supplies the yard hull number and Navy-control context. Its '1960 / R-105' disposition figures are errors contradicted by the documented 1977-10-01 / RA-70 record and are flagged, not carried. Contains no asbestos or materials information - supports no asbestos claim.
- Atlas source
- true
- Evidence ID
- ev-uss-chowanoc-at100-11