Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
-
[1]CourtListener opinion search: 'USS Deperm' [court_record]
- Finding type
- litigation_documented
- Finding
- CourtListener opinion search 'USS Deperm' returned 0 results (2026-10-07)
- Verification
- verified
- Role
- negative_finding
- Documentation level
- context_only
- Limitations
- zero-hit search; absence of hits is not proof of no litigation
- Evidence ID
- uss-deperm-adg10-cl-name-opinion
-
[2]CourtListener docket search: 'USS Deperm' [court_record]
- Finding type
- litigation_documented
- Finding
- CourtListener docket search 'USS Deperm' returned 2 result(s) (2026-10-07); individual records not reviewed
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Limitations
- hit count only — underlying dockets/opinions not individually reviewed; name query may match same-named vessels
- Evidence ID
- uss-deperm-adg10-cl-name-docket
-
[3]CourtListener opinion search: 'ADG-10' [court_record]
- Finding type
- litigation_documented
- Finding
- CourtListener opinion search 'ADG-10' returned 103 result(s) (2026-10-07); individual records not reviewed
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- ship_specific
- Limitations
- hit count only — underlying dockets/opinions not individually reviewed
- Evidence ID
- uss-deperm-adg10-cl-hull-opinion
-
[4]CourtListener docket search: 'ADG-10' [court_record]
- Finding type
- litigation_documented
- Finding
- CourtListener docket search 'ADG-10' returned 4617 result(s) (2026-10-07); individual records not reviewed
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- ship_specific
- Limitations
- hit count only — underlying dockets/opinions not individually reviewed
- Evidence ID
- uss-deperm-adg10-cl-hull-docket
-
[5]Shipscribe U.S. Navy auxiliary ships data sheets, ADG-8 Lodestone class page (Stephen S. Roberts compilation from Navy registers and BuShips records) [other_primary]
- Locator
- ADG-8 class page: characteristics, construction table, disposition table, class notes, ship notes (ADG-10 DEPERM row)
- Finding type
- vessel_history
- Finding
- Ship-design compilation (shipscribe.com, compiled from Navy registers and BuShips records): ADG-10 DEPERM - ex PCE-883 reclassified YDG-10 14 Jun 44 (while building); keel 30 Sep 1943, launched 14 Jan 1944, commissioned 13 Nov 1944 by Albina Engine & Machine Works, Portland, OR. Returned to the West Coast Apr 1946; reported for inactivation 2 May, to San Pedro 13-14 May, to San Diego 25 May 'under inactivation.' Decommissioning not explicitly reported - may have occurred when placed in inactive status 24 Dec 1946 'Out of Commission, In Reserve,' inactivation essentially complete. In USN reserve 1946-75. Reclassified ADG-10 from YDG-10 1 Nov 1947; name DEPERM assigned 1 Feb 1955, previously unnamed. Struck 21 Feb 1975; expended as a target 22 Sep 1982 west of San Clemente Island, Calif. by the Pacific Missile Test Center in 'Project Test.' Class notes: FY1942 program (YDG 8-10); 'mobile degaussing units' providing deperming services where shore facilities were unavailable; design 640 t light / 903 t limiting, 184.5 ft oa, diesel 2 screws 2,000 hp, complement 99, 1944 armament 1-3"/50 and 4-20mm singles; promotion from YDG to ADG approved by SecNav 13 Oct 1947 after a BuShips counter-proposal to CNO's AGD 1-4 renumbering.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-19
- Study period
- 1943-1982
- Population
- Ship's company, 1944-1946; reserve-fleet caretakers, 1946-1975
- Limitations
- Compiled secondary transcription of official Navy register and BuShips records, not the registers themselves; used where internally consistent (NavSource's own CO roster independently shows command beginning 13 Nov 1944). Contains no asbestos, materials, or insulation information; the documented deperming fit describes function, not materials. Supports no asbestos claim.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-01
-
[6]Naval Vessel Register (nvr.navy.mil), DEPERM (ADG 10) detail record and 'Ships, Both Coasts, Disposed' index - official U.S. Navy register, via Wayback captures [other_primary]
- Locator
- NVR ADG10 detail page (capture 2001-12-24); disposed index https://web.archive.org/web/20001202033700/http://www.nvr.navy.mil/nvrships/S_B_10.htm
- Finding type
- historical_record
- Finding
- Naval Vessel Register detail record for DEPERM (ADG 10), '(ex-PCE 883, YDG 10), DEGAUSSING SHIP': UIC 06383; Class ADG 8; Status 'Disposed of as target'; Date status changed 09/01/1982; Stricken Date 02/21/1975; Disposition SINKEX. The NVR 'Ships, Both Coasts, Disposed' index lists 'ADG 8 / ADG 10 / DEPERM / 06383' alongside sisters LODESTONE (06376) and MAGNET (06379).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-19
- Study period
- 1975-1982 (register entries); record captured 2001
- Limitations
- Official register entry, but nearly all data fields are unpopulated for this disposed hull (builder, dates, dimensions, propulsion blank); stricken date and target disposal are the substantive entries. 'Date status changed 09/01/1982' precedes the reported 22 Sep 1982 expenditure - administrative register action versus sinking event, noted in gaps. Live NVR covers current vessels only; Wayback capture cited. Contains no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-02
-
[7]Department of the Navy, Navy and Marine Corps Awards Manual NAVPERS 15,790 (Rev. 1953), Part IV - Area Campaign Medals, U.S. Ships list (verbatim HyperWar/ibiblio transcription) [other_primary]
- Locator
- Awards-IV-16.html: P34 engagement table (P34-1 'Assault and occupation of Okinawa Gunto,' 24 Mar-30 Jun 45) and U.S. Ships entry 'YDG 10: 26 Apr 45 - 30 Jun 45 P34-1'
- Finding type
- historical_record
- Finding
- The Navy and Marine Corps Awards Manual NAVPERS 15,790 (Rev. 1953) credits 'YDG 10' with participation 26 Apr 1945 - 30 Jun 1945 under engagement code P34-1, 'Assault and occupation of Okinawa Gunto' (part of the Okinawa Gunto operation, one star maximum regardless of sub-engagement count) - one Asiatic-Pacific campaign battle star for this hull.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-19
- Study period
- 1945-04-26 to 1945-06-30
- Population
- Ship's company during the Okinawa campaign, Apr-Jun 1945
- Limitations
- Official awards manual consulted through a verbatim transcription; establishes the ship's presence in the Okinawa operation window and one battle star. Does not document day-to-day tasking, the deperming work performed, or material conditions aboard; no asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-03
-
[8]U.S. National Archives and Records Administration, Catalog file unit 'YDG-10, 11/13/44-1/1/47' - U.S. Navy muster rolls (Ancestry-partnership digitization, 143 page images, public) [other_primary]
- Locator
- NARA Catalog search 'YDG-10' (proxy API), file unit of 143 images; sampled pages 00000/00002/00030/00060/00090/00100/00110/00115/00117/00119/00120/00142 - Ulithi-Okinawa sailing muster at image 00060, Q4-1944 recapitulation at 00030, report for month ending 1 Dec 1945 at 00090, Feb-1946 Sasebo-Kobe sailing at 00115/00117/00119
- Finding type
- historical_record
- Finding
- NARA file unit 'YDG-10, 11/13/44-1/1/47' (U.S. Navy muster rolls; 143 scanned pages, digitized via the NARA-Ancestry partnership; microfilm reel marker 7848, National Archives at College Park) documents: (a) a muster sheet headed 'REPORT OF SAILING FROM ULITHI ISLANDS TO OKINAWA ISLAND ON 19 APRIL 1945' carrying a ~70-name crew roster with ratings; (b) the recapitulation sheet for the quarter ending 31 Dec 1944 - 55 enlisted aboard, operating allowance 54; (c) the Report of Changes for the month ending 1 December 1945 showing demobilization transfers to 'R/S Navy 3256 FFT U.S.' and crew received from ComServDiv 104, USS KLEINSMITH (APD-134), LST-804, and the U.S. Naval Repair Base Navy No. 3256; (d) the Report of Changes dated '18th day of February, 1946, date of sailing from Sasebo, JAPAN to KOBE, JAPAN,' showing crew exchanges with minesweepers USS SURFBIRD (AM-383), USS DUNLIN (AM-361), USS RUDDY (AM-380), Fleet Hospital 103/104, and R/S Navy 926 (distribution: ComServRon 10, Div 103) - occupation-period operations in Japanese waters. File-unit coverage ends 1 Jan 1947, consistent with the inactive-status entry of 24 Dec 1946.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-19
- Study period
- 1944-11-13 to 1947-01-01
- Population
- Ship's company ~55-70 enlisted plus officers, 1944-1947
- Limitations
- Primary personnel records (muster rolls, recapitulation sheets, reports of changes) - not navigation deck logs; they document crew composition and reported sailing events, not daily positions or work performed. Pages were sampled, not all 143 read; the Apr 1945 Okinawa arrival and Feb 1946 Japan operations are documented, the outbound transit (Nov 1944-Apr 1945) and Apr 1946 return leg were not pinned from sampled pages. Contains no asbestos or materials information. The catalog metadata lists roll 7899 while the reel marker reads 7848 - both recorded here.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-04
-
[9]Franke, K., and Paustenbach, D., 'Government and Navy knowledge regarding health hazards of asbestos: A state of the science evaluation (1900 to 1970),' Inhalation Toxicology 23(sup3):1-20 (2011), PMID 22200078 + shipscribe ADG-8 machinery/class data (ev-01) [other_primary]
- Locator
- Inhalation Toxicology 23(sup3):1-20, 1930-1959 analysis block
- Finding type
- asbestos_application
- Finding
- As completed (1944), YDG-10 was a diesel-driven auxiliary (2 GM 12-567A engines, 2 screws) fitted with a Bureau of Ordnance-pattern deperming electrical plant - heavy cable reels and motor-generator equipment carried to treat other ships' magnetic signatures. Peer-reviewed scholarship documents that the U.S. Navy required and used asbestos-containing shipboard products throughout the period covering this hull's construction and service (1930-1959 analysis block), and that naval ships carried amosite and chrysotile insulating materials extensively well into the 1950s. For a diesel auxiliary of this era, asbestos-containing materials were era-typical in exhaust-system insulation, gaskets and valve packing, electrical insulation, fireproofing, and brake linings.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-19
- Study period
- 1943-1982
- Population
- Albina construction workforce (1943-44); ship's company (1944-46); reserve-fleet maintenance and 1982 target-preparation crews
- Limitations
- Era/program-level scholarship combined with this hull's documented diesel machinery and deperming fit - establishes that asbestos-containing materials were Navy-standard practice in Deperm's construction and service era, NOT that any survey or record confirms asbestos aboard this specific hull. A diesel plant carried less thermal insulation than a steam plant; the deperming equipment's materials content is undocumented at any level. Does not establish quantity, location, condition, individual exposure, or causation.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-05
-
[10]Shipscribe ADG-8 class page ship notes (register transcription) vs NavSource PCE archive page and Wikipedia infobox (secondary compilations) [other_primary]
- Locator
- Shipscribe ADG-10 ship note ('Name assigned 1 Feb 55, previously unnamed'; 'Decommissioning not explicitly reported'); NavSource page 12/02883 header text vs CO roster
- Finding type
- historical_record
- Finding
- Naming/designation correction: the register transcription shows the hull spent its entire commissioned career unnamed as YDG-10 - reclassified ADG-10 on 1 Nov 1947 while in reserve, with the name DEPERM assigned only on 1 Feb 1955. Popular compilations invert this: NavSource prints 'Commissioned USS PCE-883 in 1945' and 'Named Deperm and reclassified as ADG-10' plus 'Decommissioned in November 1947'; Wikipedia repeats 'commissioned 1945.' The register-based record (commissioned 13 Nov 1944 as YDG-10 - she was reclassified from the building PCE-883 before completion - and decommissioning never explicitly reported, likely 24 Dec 1946) controls; NavSource's own CO roster (LT Donovan from 13 Nov 1944) independently supports the 1944 date.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-19
- Study period
- 1944-1955
- Limitations
- The correction rests on a register transcription versus a volunteer compilation - strong but not the registers themselves; NavSource's internal inconsistency (1945 text vs 13 Nov 1944 CO roster) corroborates the register reading. The actual decommissioning date remains genuinely unresolved in the located primary record. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-06
-
[11]NavSource Online Patrol Craft Escort Photo Archive, Deperm (ADG 10) ex-YDG-10 ex-PCE-883 page (navsource.org/archives/12/02883.htm), via 2024 Wayback capture [other_primary]
- Locator
- Page header/spec block, photo captions, commanding-officer table
- Finding type
- vessel_history
- Finding
- NavSource PCE archive page for Deperm (ADG-10): Naval Historical Center photos NH 84978 (YDG-10 with USS YMS-293 alongside, circa 1945, photo via shipscribe.com) and NH 77378 (probably San Francisco Bay soon after return to the West Coast, 1946); commanding-officer roster - LT Emmett Victor Donovan, USNR (13 Nov 1944), LT Paul J. Lemmel, USNR (12 Dec 1945), LT Charles Harmon Alexander, USN (15 Mar 1946 - 1 Jan 1947); and the explicit statement 'There is no DANFS History currently available for Deperm (ADG 10).'
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-19
- Study period
- 1944-1947
- Population
- Ship's officers, 1944-1947
- Limitations
- Volunteer-compiled photo archive used for photo and CO-roster detail only; internally inconsistent on dates (text says commissioned 1945 and decommissioned Nov 1947 while its own CO roster begins 13 Nov 1944), so it is not treated as authority on disputed dates - the register transcription controls. NHC photo numbers preserved as archival leads to the NHHC original prints. No asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-07
-
[12]Batch-472 search ledger (this record): NHHC/DANFS (no entry exists; index 404); shipscribe register compilation; NVR detail + disposed index; NAVPERS 15,790; NARA muster rolls; NavSource; CourtListener API/web (rate-limited); general web index litigation search; MARAD ShipHistory (search PIV-gated); hazegray mirror (DNS dead) [other_primary]
- Locator
- search_ledger rows sl-uss-deperm-adg10-01 through sl-uss-deperm-adg10-10
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed case naming USS Deperm, YDG-10, PCE-883, or ADG-10 was found in the public sources searched (see search_ledger). No DANFS entry exists for this hull. CourtListener API searches on 2026-09-19 were rate-limit blocked (HTTP 429, 125/day shared quota); secondary web-index searches returned only a law-firm marketing ship-list page (excluded per source rules) and no case naming the hull. The hull was expended as a missile-test target in 1982 - any surviving material went down with her west of San Clemente Island; reserve-fleet lay-up and target-preparation histories are undocumented in located sources.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-19
- Study period
- 2026-09-19
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a 1943-44 diesel auxiliary is era-consistent with asbestos-containing insulation, gaskets, packing, and electrical materials. The litigation check is partial: CourtListener's index could not be queried directly (throttled) and the negative litigation result rests on secondary web indexes only; re-running the CourtListener name and hull-number queries when quota resets remains an open step. Does not establish presence or absence; does not establish or defeat any exposure claim or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-08
-
[13]NARA Guide to Federal Records: RG 24, RG 19, RG 181 record-group descriptions; NARA Catalog file-unit metadata; NHHC photographic collection [other_primary]
- Locator
- RG 24 / RG 19 / RG 181 record-group guides; NARA Catalog file unit 'YDG-10, 11/13/44-1/1/47'
- Finding type
- historical_record
- Finding
- Archival leads (not retrieved - research-room or reproduction order required; no spend authorized): the remaining ~130 unread pages of the NARA muster-roll file unit (which may pin the Nov 1944-Apr 1945 transit and the Apr 1946 return leg); WWII navigation deck logs proper for YDG-10 in RG 24 if held separately from this muster file; NARA RG 19 (Bureau of Ships) PCE-842-class and YDG-conversion design/specification files including the BuOrd deperming equipment fit; RG 181 Portland-area naval district records for Albina Engine & Machine Works contracts; NHHC original prints of photos NH 84978 and NH 77378; Pacific Missile Test Center 'Project Test' records for the 22 Sep 1982 SINKEX (the register's 09/01/1982 status-change entry implies an underlying disposal-action file). These are the plausible repositories for any surviving hull-specific material or equipment specification.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-19
- Limitations
- Leads only - none of these holdings was pulled or read beyond the sampled muster pages; no claim about their contents is made. A hull-specific material specification, if it exists, most plausibly sits in the RG 19 design/conversion files or the BuOrd deperming-equipment documentation.
- Atlas source
- true
- Evidence ID
- ev-uss-deperm-adg10-09
