Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
-
[1]research packet 986-packet.md (3 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (hull-number collision flagged)
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-douglas-pg100-pkt-986-packet-md
-
[2]NavSource Online: Motor Gunboat/Patrol Gunboat Photo Archive, Douglas (PG-100) - 'Tacoma Class Motor Gunboat' timeline, specifications, commanding officers, photo captions, R/V Lauren disposal [other_primary]
- Locator
- NavSource 12/11100.htm header block, specifications block, CO table, photo captions
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down by Tacoma Boatbuilding Co., Tacoma, WA; launched 19 June 1970; commissioned USS Douglas (PG-100) 6 February 1971; decommissioned 1 October 1977 at Little Creek, VA; struck from the Navy Register 1 October 1977; transferred to the David Taylor Naval Research and Development Center, Annapolis, MD; converted to a research vessel, renamed R/V Lauren, operated with the Carderock Division, Naval Surface Warfare Center, U.S. Navy at Panama City Beach, FL; sunk on a sandbank off the coast of North Carolina 30 April 2008 for use as a target for fighter pilots from Marine Corps Air Station Cherry Point, NC. Spec block: 250 t., 165', 24', 40 kts; one 3"/50 dual-purpose mount, two Harpoon missiles, two .50-cal machine guns; two diesel engines + one gas turbine, two shafts with controllable-pitch propellers. Photo captions place the ship at Venice Oct 1973, Naples Jun 1976, Barcelona Dec 1976, Genoa Dec 1976 (Mediterranean service) and document her Standard ARM box-launcher fit ('fitted to fire the Standard Arm antiship missile'). Sponsor: Mrs. Willard F. Searles, Jr. Commanding officers: LT Robert J. O'Brien (Feb 1971-May 1972), LT Lawrence C. Dearth (May 1972-Jun 1973), LT Larry M. Copeland (Jun 1973-Jul 1975), LT Thomas G. Russell (Jul 1975-Oct 1977). Page notes expressly: 'There is no DANFS history available for Douglas (PG-100).'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1969-2008
- Population
- Tacoma Boatbuilding trades (1969-71); crew (1971-77); NSWC Carderock/Panama City research-vessel operators (1977-2008); MCAS Cherry Point EOD (2008)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - but its milestones match NVR exactly and photo captions transcribe official sources (NHHC/Bureau of Ships, USMC). No asbestos or material content. Displacement 250 t conflicts with NVR 245 t full (variant carried).
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-01
-
[3]Naval Vessel Register ship detail: 'DOUGLAS (PG 100) (ex - PGM 100) PATROL COMBATANT' - vessel status, milestone dates, builder, disposal (live page verified 2026-10-04) [other_primary]
- Locator
- NVR getHull.htm?shipId=1094 - Vessel Status, Milestone Dates, Program Characteristics sections
- Finding type
- vessel_history
- Finding
- NVR official record for this hull: Class 'PG 92'; UIC 20093; builder Tacoma Boatbuilding Co., Inc.; Award Date 01/01/1966; Launch Date 06/19/1970; Commission Date 02/06/1971; Decommission Date 10/01/1977; Stricken Date 10/01/1977; Status 'disposed of in support of fleet training exercise,' Date Status Changed 04/30/2008; Custodian US NAVY; page last updated 02/06/2009. Keel Date field blank (no laid-down date published).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1966-2008
- Population
- crew (1971-77); Navy custodianship through 2008 disposal
- Limitations
- Official registry record; no asbestos or material content. Live page's Physical Characteristics section is suppressed ('currently unavailable as we update our public information policies'); those data come from the archived 2019 capture (ev-03). Keel/laid-down date absent from NVR - secondary sources give only the year 1969.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-02
-
[4]Naval Vessel Register ship detail, archived 24 March 2019 capture: physical characteristics suppressed on the current live page (ARCHIVED copy cited) [other_primary]
- Locator
- Wayback 2019-03-24 capture, NVR SHIPSDETAIL_PG_100.HTML, Physical Characteristics block
- Finding type
- vessel_history
- Finding
- Archived NVR physical characteristics for this hull: Overall Length 165 ft; Waterline Length 154 ft; Extreme Beam 24 ft; Full Displacement 245 tons; Hull Material 'All aluminum hull'; No. of Propellers 2; Propulsion Type 'Diesel' (simplified field - omits the gas turbine shown by NavSource/navypedia); Accommodations Officers 3, Enlisted 21 (= complement 24).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1971-1977 (commissioned era)
- Population
- crew accommodations 24 (3 officers, 21 enlisted)
- Limitations
- ARCHIVED copy - the live NVR page now suppresses the Physical Characteristics section; cited via Wayback capture 20190324014519, not presented as live. 'Propulsion Type: Diesel' understates the CODOG plant (NavSource: two diesels + one gas turbine). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-03
-
[5]DANFS 'Douglas' entry (NHHC, live page) + DANFS PG-100 entry for Vitality (Vol. VII p. 549 transcription via hazegray mirror) - designation-collision resolution [nhhc_danfs]
- Locator
- NHHC DANFS d/douglas.html (APR-7 entry); hazegray DANFS transcription patrol/pg100.htm (Vitality)
- Finding type
- historical_record
- Finding
- CORRECTION/documentation-status finding: (1) The NHHC DANFS 'Douglas' page covers only APR-7 - 'Douglas was the name assigned to APR-7 whose construction was canceled on 12 March 1943' (a county in Nebraska). No DANFS entry exists for the PG-100 gunboat, consistent with NavSource's express note. (2) Hull-number collision: PG-100 was first assigned to Vitality - a Flower-class corvette launched 15 April 1943 at Midland Shipyard, traded to the Royal Navy before completion and renamed Willowherb (K.283); 'Though carried on the Navy list as PG-100 following the war, Vitality never actively served the United States Navy' (DANFS Vol. VII p. 549). The 1971 gunboat Douglas is a different hull - records listing 'PG-100' must be checked for which hull is meant.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1947 (Vitality); 1971-1977 (this hull)
- Limitations
- Establishes documentation status (no DANFS coverage for this hull) and resolves a designation collision - not an asbestos record. The Vitality entry is cited via hazegray's verbatim DANFS transcription (losthistory.net/hazegray/danfs/patrol/pg100.htm, live 2026-10-04); the corresponding live NHHC vitality.html page returned 404.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-04
-
[6]Navypedia, 'ASHEVILLE gunboats (1966-1971)' - class table, machinery fit, builder assignments, Standard ARM retrofit list, Mediterranean counter-tattletale role (secondary compilation) [other_primary]
- Locator
- navypedia us_pt_asheville.htm class table row PG100 + class narrative + armament footnote
- Finding type
- vessel_history
- Finding
- Class-level context for this hull: Asheville-class gunboats built 1964-71 by two yards - Tacoma Boatbuilding (12 boats: PG-84/85/86/87/88/89/90/92/94/96/98/100) and Peterson, Sturgeon Bay (5 boats: PG-93/95/97/99/101); Douglas is the last Tacoma-built boat (laid down 1969). Machinery: CODOG - 2 x Cummins 875V12 diesels + 1 x General Electric LM-1500 Mk 7 gas turbine. Reclassified PGM->PG April 1967. Armament note '1971-75, PG86, 87, 96, 98, 100: -1 x 1 40/60; +2 x 1 Standard ARM SSM (2 AGM-78)' - Douglas among the five missile-armed boats. Four class units based in the Mediterranean were assigned by CNO Admiral Zumwalt to a 'counter-tattletale' role shadowing Soviet warships for missile-attack warning to the Sixth Fleet.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1964-1977
- Population
- class crews and builders (context)
- Limitations
- Secondary compilation (not primary); class-level context only - the Mediterranean counter-tattletale statement is class-wide and does not by itself prove this hull held that role (her Naples basing per secondary Wikipedia summary; photo placements per NavSource). Laid-down year 1969 unverified against a primary source. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-05
-
[7]Era inference built on: NVR archived physical characteristics (all-aluminum hull; CODOG-era plant); NavSource spec block (two diesels + one gas turbine); navypedia machinery detail (Cummins 875V12 x2 / GE LM-1500 Mk 7); GAO HRD-80-2 substitution-era dating (see ev-07) [other_primary]
- Locator
- NVR archived physical characteristics; NavSource spec block; navypedia machinery line; GAO HRD-80-2 era framing
- Finding type
- asbestos_application
- Finding
- An all-aluminum patrol gunboat built 1969-70 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a small combatant of this period were machinery and exhaust-system lagging (the LM-1500 gas turbine's hot-section and exhaust trunking especially), gaskets, valve packing, electrical insulation, and fire-resistant outfit/deck material in the confined hull volume. As a CODOG boat she carried no boilers or steam plant - the boiler/steam lagging pathway of steam vessels does not apply; the dominant candidate pathway is machinery/exhaust insulation and outfit materials.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1969-2008
- Population
- Tacoma Boatbuilding trades (1969-71); crew (1971-77); NSWC conversion/research personnel (1977-2008); EOD/range personnel (2008)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for PG-100. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull. Aluminum construction reduces but does not eliminate candidate applications.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-06
-
[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, 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 construction (1969-70) and commissioned service (1971-77).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1979
- Population
- Navy shipyard workers; asbestos program review
- 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 - standing defect noted since BATCH-01); content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-07
-
[9]Tacoma Public Library, Northwest Room / ORCA digital archive, photo record D158443-7 (Tacoma Boatbuilding Co. photo of the PG-100 launch ceremony, 19 June 1970; citing Tacoma News Tribune 6-19-70 p.7) [museum_official]
- Locator
- Northwest ORCA record D158443-7 + companion launch-party record (launching ceremony captions)
- Finding type
- historical_record
- Finding
- Library archive caption for this hull's launch: 'The Tacoma Class Gunboat PG-100 (formerly PGM-100) was launched in ceremonies occurring at Tacoma Boatbuilding Co. at 4:45 p.m. on June 19, 1970. She would be commissioned the "USS Douglas" in February of 1971... Only 6 1/2 years after she was commissioned, she was decommissioned and struck from the Naval Register. The "Douglas" was converted to a research vessel and renamed the R/V "Lauren."' Companion caption: sponsor Mrs. Willard F. Searle, Jr., of Alexandria, VA christened the ship; 'the "USS Douglas" was named after the city of Douglas, Arizona'; 'the last in a series of 12 aluminum gunboats built for the US Navy by that firm.'
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1970
- Population
- Tacoma Boatbuilding workforce; launch ceremony participants
- Limitations
- Verification partial - the page is live but behind a browser-verification challenge; content captured via search-index text and corroborates NavSource. Sponsor surname reads 'Searle' here vs 'Searles' on NavSource (variant carried in gaps). Namesake attribution (city of Douglas, Arizona) rests on this library caption citing the contemporaneous Tacoma News Tribune - not verified against a Navy source. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-08
-
[10]Batch-8490 CourtListener searches via authenticated helper (API v4): '"USS Douglas"' type=o; '"PG-100"' type=o; '"USS Douglas"' type=r (stand-down gated); '"PG-100"' type=r (stand-down gated) [court_record]
- Locator
- search_ledger rows sl-uss-douglas-pg100-05 through -08
- Finding type
- litigation_documented
- Finding
- CourtListener opinion search '"USS Douglas"' returned 0 results - no opinion mentions the ship by name. CourtListener opinion search '"PG-100"' returned 49 hits but all 20 returned hits are name collisions (docket-number/form/statute references in criminal, tax, insurance, and family cases - e.g., Diversified Technical Services v. Indiana Dept. of Workforce Development; Pena v. State; Toenes v. McDonnell); none is vessel- or asbestos-related. The two docket-type (type=r) base queries were attempted but repeatedly returned the fleet-wide pacing stand-down during this session - logged as blocked, NOT as a negative result. Combined with the secondary-web sweep (which surfaced only law-firm marketing listicles asserting asbestos aboard without primary sourcing - excluded by source policy), no qualifying asbestos litigation naming this hull was located.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- Opinion coverage is not exhaustive: 'PG-100' returned 49 hits and only the 20-result page was classified; hits beyond the first page were not reviewed. Docket/repository coverage is a genuine open gap - both type=r queries were pacing-gated all session and an asbestos-qualified variant was likewise not completed before session end. Absence of a located record does not prove absence of exposure or litigation.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-09
-
[11]NARA catalog - RG 24 VA Navy Deck Log (NDL) digitization status for this hull vs sister PGs; NHHC photo USN 1148979 (Bureau of Ships collection, via NavSource caption) [other_primary]
- Locator
- catalog.archives.gov search 'Douglas (PG-100)' - 84 fuzzy results, sister-ship file units confirmed; NavSource 12/11100.htm photo caption USN 1148979
- Finding type
- historical_record
- Finding
- Archival leads: (1) NARA's VA-partnership deck-log scanning program has digitized monthly deck-log file units for sister PGs of this class - confirmed file units for Antelope (PG-86), Beacon (PG-99), and Chehalis (PG-94) across 1971-77 in RG 24 (e.g., NAID 471676521 'Antelope (PG-86) - December 1973'). Whether Douglas (PG-100) monthly logs for 1971-77 are in the online set was not confirmed this session - catalog fuzzy search surfaced sister-ship units only in the returned pages. (2) NHHC photo USN 1148979 (National Archives, Bureau of Ships collection) documents the pre-launch hull at Tacoma Boatbuilding on 19 June 1970 (caption via NavSource).
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1971-1977
- Population
- crew (1971-77) as logged in deck logs
- Limitations
- Archival lead only: deck logs are position/operations records, not material records - they would document ports, availabilities, and casualties, not asbestos content. Douglas PG-100's presence in the digitized NDL set is unconfirmed. NARA catalog is JS-rendered; results captured via rendered search page.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-10
-
[12]Designation/name cross-check: NVR 'DOUGLAS (PG 100) (ex - PGM 100)'; usnavy.skyrocket.de PG-100 row ('-> R/V Athena II'); arxiv 1410.1935 (R/V ATHENA is 'a converted PG-84 Asheville-class patrol gunboat... operated out of Naval Surface Warfare Center Panama City Division') [other_primary]
- Locator
- NVR getHull?shipId=1094 header line; usnavy.skyrocket.de data/pg-84__asheville.htm PG-100 row; arxiv.org/abs/1410.1935 (NSWC ATHENA paper)
- Finding type
- historical_record
- Finding
- CORRECTION: secondary tracker usnavy.skyrocket.de lists PG-100 Douglas's fate as '-> R/V Athena II' - a misattribution. NVR's disposal record (fleet-training-exercise disposal 04/30/2008), NavSource's R/V Lauren entry, and the USMC sinking caption all establish this hull became R/V Lauren, not Athena. R/V ATHENA at NSWC Panama City was a different converted Asheville-class (PG-84 class) patrol gunboat per the ONR-funded NSWC research paper arxiv 1410.1935 - the two conversions coexisted at the same command. The VERIFY source listing 'PGM-100' reflects the as-ordered motor-gunboat designation; the class was reclassified PGM->PG in April 1967, three years before this hull's launch - she served as PG-100 throughout. Record consolidated under PG-100.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1966-2008
- Limitations
- Corrects secondary-source errors; no asbestos content. The 'ex-PGM 100' NVR notation indicates the designation was assigned under the PGM scheme (award 1966) and reclassified with the class in 1967 - whether the hull was ever physically marked PGM-100 is undocumented but moot given she never served before the reclassification.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-11
-
[13]Batch-8490 search ledger (this record): NVR live + Wayback; NavSource 12/11100; NHHC DANFS douglas.html; hazegray DANFS pg100.htm (Vitality); navypedia class page; Tacoma Public Library ORCA; NARA catalog deck-log probe; CourtListener (partial - see ev-09); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-douglas-pg100-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat/disposal-prep disclosure, or verified litigation naming USS Douglas (PG-100/PGM-100) or R/V Lauren was found in the public sources searched. The only 'asbestos aboard' material is law-firm marketing content (mesotheliomaveterans.org, asbestos.com, mesothelioma.net listicles asserting asbestos without primary sourcing - excluded by source policy). The 2008 target sinking occurred under the modern regime in which ex-vessels are defueled and stripped of hazardous materials under EPA procedures - but no hull-specific preparation or hazmat record for this disposal was located.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - and docket-type litigation coverage remains an open gap (pacing-gated, see ev-09). Deck logs, Tacoma Boatbuilding work packages, NSWC conversion records, and the 2008 range-placement environmental file are undigitized leads.
- Atlas source
- true
- Evidence ID
- ev-uss-douglas-pg100-12