Evidence
14 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-14).
-
[1]research packet 940-packet.md (7 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-798-pc798-pkt-940-packet-md
-
[2]NavSource Submarine Chaser Photo Archive, PC-798 page (live navsource.net URL verified 2026-10-03; includes August 1949 Seattle transfer photographs) [other_primary]
- Locator
- NavSource PC-798 page - designation timeline, specification block, photo captions (Luang Prabang PT 3 / P 628 sections)
- Finding type
- vessel_history
- Finding
- NavSource record for this hull: 'PC-461 Class Submarine Chaser: Laid down 3 July 1943 by the Commercial Iron Works, Portland, OR; Launched 14 August 1943; Commissioned USS PC-798, 19 July 1944; Transferred to the War Shipping Administration in June 1948; Transferred to France in 1949 and named Luang Prabang (PT 3); Reclassified P-628; Struck from the Naval Register 4 May 1955 and sold; Fate unknown.' Specifications: 375 t., 173 ft 8 in. x 23 ft x 10 ft 10 in., 22 kts, complement 65, one 3"/50 dual purpose mount, one 40mm mount, three 20mm guns, two depth charge projectors, two depth charge tracks, two rocket launchers; two 1,280 bhp Hooven-Owen-Rentschler RB-99DA diesels, Westinghouse single-reduction gear, two shafts. Photography documents the hull at Seattle, August 1949, alongside sisters Hue (ex-PC-797) and Phnom Penh (ex-PC-796) in French transfer configuration. Page notes 'There is no DANFS history available for PC-798.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1955
- Population
- Commercial Iron Works construction trades 1943-44; wartime US Navy crew (class complement 65); French Navy crew 1949-55
- Limitations
- NavSource is a private archival compilation using official-derived data and NARA-captioned photographs, not a government publication. Specifications are class-standard figures, not a survey of this specific hull. 'Struck from the Naval Register 4 May 1955' does not specify US Naval Vessel Register vs French navy list - see gaps. No asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-01
-
[3]uboat.net Allied Warships, USS PC-798 (PC-798) page and linked Allied Warship Commanders records [other_primary]
- Locator
- uboat.net ship page 8627 - data table and 'Commands listed' section
- Finding type
- vessel_history
- Finding
- Corroborating reference record for this hull: patrol craft of the PC-461 class, built by Commercial Iron Works (Portland, Oregon); ordered 27 February 1942; laid down 3 July 1943; launched 14 August 1943; commissioned 19 July 1944; 'Transferred to France in in 1949 being renamed Luang Prabang'. Commanding officers listed: Lt. James I. Couser, USNR (19 Jul 1944 - mid 1945, then to PCE(R)-848) and W W Lovelace, USNR (mid 1945 - late 1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1949
- Population
- Wartime US Navy crew under Couser (Jul 1944-mid 1945) and Lovelace (mid-late 1945)
- Limitations
- Secondary compiled database (reputable specialist reference). It is the only located source for the 27 Feb 1942 order date and the commanding-officer sequence. No asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-02
-
[4]ShipbuildingHistory (Colton yard lists, shipbuildinghistory.njscuba.net), Commercial Iron Works, Portland OR - construction list and yard history (live page verified 2026-10-03) [other_primary]
- Locator
- Commercial Iron Works yard table, PC-798 row (hull #71); yard-history header text
- Finding type
- vessel_history
- Finding
- Independent yard-list corroboration: Commercial Iron Works (founded November 1916 by William T. Casey, Otto J. Hoak and Robert Boogs, on a 30-acre site just south of the Ross Island Bridge, Portland OR; closed 1946 'after building an astonishing 188 boats during the course of WWII'; site sold to Zidell Marine) built PC-798 as yard hull #71 - 463 tons, 173 ft, delivery 19-Jul-44, disposition 'To France 1949 as Luang Prabang (PT 3, P 628?), sold 1955'. Consecutive sisters in the same yard list: PC-796 (Phnom Penh, PT 2), PC-797 (Hue, PT 1, P 627?), PC-799 (to Korea 1950 as Kum Kang Sang, PC 702), PC-802 (to Korea 1950 as Sam Kak San, PC 703); PC-787 to Indonesia 1960 as Alu Alu; PC-790 to Cuba 1956 as Baire (PE 203); PC-794 to Mexico 1948 as GC-34.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1955
- Population
- Commercial Iron Works construction trades 1943-44
- Limitations
- Secondary compiled yard list (reputable specialist reference, not a government record). Confirms build and the 1949 France transfer. 'P 628?' notation carries the compiler's own uncertainty on the pennant suffix. No asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-03
-
[5]HyperWar (ibiblio), 'Ships of the U.S. Navy, 1940-1945' - Submarine Chasers / PC Submarine Chasers (Steel Hull) list (live page verified 2026-10-03) [other_primary]
- Locator
- ships-sc.html, PC-461 Class table, 'PC-783-798' range row and class header block
- Finding type
- vessel_history
- Finding
- Official-derived compilation listing: PC-798 appears only inside the range row 'PC-783-798 | (no names) | Comm. 1942-44 | (no notes)' - corroborating that this hull belongs to the PC-461-class wartime commission block with no lost, conversion, or transfer annotation in the wartime-era list. The page's PC-461 class header block lists class characteristics: displacement 284 t., length 173'8", beam 23', draft 10'10", speed 21 kt, complement 65, diesel engines, 2 screws, 2,280 shp.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1944 (commission-era window listed)
- Population
- Wartime US Navy crew (class complement 65)
- Limitations
- Compiled transcription hosted on HyperWar/ibiblio - class/era corroboration only. The range-row format gives no ship-specific entry; no asbestos or materials information. Class-block displacement (284 t.) differs from NavSource's 375 t. figure - variant carried, not reconciled.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-04
-
[6]National Archives Catalog, file unit 'PC-798, 7/19/44-5/6/46' (NAID 192458551, Roll 5872), RG 24 Records of the Bureau of Naval Personnel, series Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities [other_primary]
- Locator
- NARA Catalog NAID 192458551 (RG 24, Muster Rolls series, Roll 5872)
- Finding type
- vessel_history
- Finding
- NARA catalog verifies a digitized muster-roll file unit for this hull spanning 19 July 1944 - 6 May 1946 (NAID 192458551, microfilm roll 5872, RG 24). The roll's start date equals the commissioning date and its 6 May 1946 end marks the close of US Navy manning - corroborating continuous documented US Navy service from commissioning through 6 May 1946.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-07-19 to 1946-05-06
- Population
- US Navy enlisted/officer complement carried on the rolls, Jul 1944 - May 1946
- Limitations
- Catalog-level verification (file-unit title, NAID, roll, record group, series) - individual muster sheets were not transcribed. Muster rolls document crewed administrative existence, not operations, materials, or asbestos. Whether the 6 May 1946 roll end coincides with decommissioning is not stated in the catalog - treated as the end of documented manning only.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-05
-
[7]National Archives Catalog, World War II War Diaries (RG 38): full-text mentions of PC-798 in war diaries of W Coast Sound Training Squadron (Sep 1944, NAID 134364295); Commander Western Sea Frontier (monthly Apr 1944 - Sep 1945: NAIDs 78712428, 139801813, 139850542, 139914266, 633409896, 140015183, 140058991, 101719769, 101772257, 83543995, 83574572, 77519043, 77560121, 78582073, 78587632, 139739044, 78535484, 78660851); Commander 13th Naval District (Jun, Jul, Aug, Sep, Dec 1944; Jul, Aug, Sep, Nov 1945; Mar 1946 + COM 13 War History: NAIDs 78631736, 134361120, 139760872, 78660578, 139822695, 77485895, 77524884, 77599258, 77599493, 77683032, 77653933); Commander 11th Naval District (Aug, Sep-Oct 1944: NAIDs 78632217, 78670788); COMNORPAC (Jul 1944, NAID 78582886); COMNORWESSEAFRON (Feb-Apr 1944, NAID 78525586); USS Gregory (Aug-Sep 1944, NAID 78663307); MR404(2) Composition of Task Forces Aug 1944 (NAID 27578819) [other_primary]
- Locator
- catalog.archives.gov search 'PC-798': NAIDs listed above (RG 38 war diaries; cross-mentions in RG 38 command diaries)
- Finding type
- vessel_history
- Finding
- NARA catalog verifies that this hull is named in the war diaries of the West Coast Sound Training Squadron (September 1944), Commander Western Sea Frontier (monthly, April 1944 through September 1945 - the April-July 1944 diaries predate commissioning and are fitting-out/assignment references, the August 1944 - September 1945 run is operational), Commander 13th Naval District (Seattle - June 1944 through March 1946, the June-July diaries pre-commissioning), Commander 11th Naval District (San Diego - August-October 1944), COMNORPAC (July 1944) and COMNORWESSEAFRON (February-April 1944, also pre-commissioning), and USS Gregory (August-September 1944), and appears in the August 1944 Composition of Task Forces list - a service picture of US West Coast anti-submarine and sound-training duty under the Western Sea Frontier from commissioning through war's end, shifting toward the Pacific Northwest (13th Naval District) in 1945-46.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-11 to 1946-03 (operational span 1944-08 to 1945-09)
- Population
- Wartime US Navy crew (class complement 65); West Coast Sound Training Squadron and 11th/13th Naval District training commands
- Limitations
- Catalog-level verification of file-unit titles and full-text search hits - the underlying diary text was not transcribed, so specific operations, locations day-by-day, and any materials references remain in the unscanned/undownloaded record. War-diary mentions in April-July 1944 diaries (and a November 1943 USS Breckenridge hit, NAID 78269171) predate the 19 July 1944 commissioning; they are consistent with outfitting/assignment tracking or, for the 1943 hit, a possible collision - none can be resolved at catalog level. No dedicated 'USS PC-798 - War Diary' file unit was located - the hull's own monthly diaries, if submitted, are not cataloged under its name in this series.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-06
-
[8]National Archives Catalog: 'Commander, Columbia River Group, Pacific Reserve Fleet, 12/1/45-1/1/49' (NAID 190113550, 565 images) naming PC-798; plus Seattle-area administrative units naming the hull: 'District Craft, 13th Naval District, Naval Station, Seattle, WA, 2/28/45-1/1/49' (NAID 190544074), Naval Receiving Station Seattle transients rolls 1945-46 (NAIDs 185075970, 185073799, 185075799, 185072608), 'Station, Seattle, Washington, 9/1/42-1/1/49' (NAID 185210245), and 'Ship Repair Training Unit Puget Sound Navy Yard, Bremerton, 2/15/44-2/1/46' (NAID 185119400) [other_primary]
- Locator
- NARA Catalog NAIDs 190113550, 190544074, 185075970, 185073799, 185075799, 185072608, 185210245, 185119400 (RG 24/related administrative series)
- Finding type
- vessel_history
- Finding
- NARA catalog verifies this hull is named in the administrative/muster records of the Commander, Columbia River Group, Pacific Reserve Fleet (December 1945 - January 1949) - the reserve-fleet organization holding inactive Pacific Northwest hulls - and in Seattle-area administrative units (13th ND district craft, Naval Receiving Station Seattle transient rolls, Puget Sound Navy Yard repair-training unit). Consistent with inactivation and reserve layup on the Columbia River/Puget Sound between the end of crewed manning (May 1946) and the June 1948 War Shipping Administration transfer.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-12 to 1949-01
- Population
- Reduced-status/inactivation crew; Columbia River Group Pacific Reserve Fleet custodial personnel 1946-48
- Limitations
- Catalog-level verification of file-unit titles and full-text search hits - the underlying sheets were not transcribed, so whether the hull appears as an assigned craft, an in-custody hull, or a personnel-assignment destination is not resolved. The Columbia River Group record does not itself state where PC-798 lay or whether she was formally decommissioned; the reserve-layup reading is an inference consistent with the muster-roll close (May 1946) and the 1948 transfer. No asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-07
-
[9]National Archives Catalog, file unit 'PC-798' (NAID 2759311), RG 38 Records of the Office of the Chief of Naval Operations, series 'Material Inspection Reports and Related Documentation, 1940-1978' (creator: Board of Inspection and Survey); HMS/MLRs: P 1H, P 1C, and 8 more [other_primary]
- Locator
- NARA Catalog NAID 2759311 (RG 38, Material Inspection Reports and Related Documentation; HMS/MLRs P 1H, P 1C, 8 more)
- Finding type
- historical_record
- Finding
- NARA catalog verifies a hull-specific file unit of Board of Inspection and Survey (INSURV) material inspection reports for PC-798 within RG 38's 'Material Inspection Reports and Related Documentation' series (1940-1978), with at least ten report components (HMS/MLR codes 'P 1H', 'P 1C', plus 8 more). Material inspection reports record the hull's machinery, structure, and material condition at acceptance and periodic inspections - the strongest located lead for hull-specific material documentation.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-1948 (probable, within series 1940-1978)
- Population
- Board of Inspection and Survey inspection population; crew during inspection windows
- Limitations
- Archival lead only: the file unit is 'Not Yet Available Online' - contents were not examined and may or may not name insulation materials or asbestos. Catalog metadata does not state report dates or content. Retrieval would require a NARA pull; presence of a material-inspection file is not itself evidence of asbestos.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-08
-
[10]National Archives Catalog, file unit 'PC-798' (NAID 175666160), RG 19 Records of the Bureau of Ships, series 'Microfilm of Ship Engineering Drawings, 1945-1955' (architectural and engineering drawings) [other_primary]
- Locator
- NARA Catalog NAID 175666160 (RG 19, Microfilm of Ship Engineering Drawings 1945-1955)
- Finding type
- historical_record
- Finding
- NARA catalog verifies a hull-specific file unit of Bureau of Ships engineering drawings for PC-798 on microfilm within RG 19's 'Microfilm of Ship Engineering Drawings' series (1945-1955). Bureau of Ships plan sets can include piping, insulation, and machinery-arrangement drawings - a located lead for the hull's actual construction material configuration.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1955 (series window)
- Population
- Bureau of Ships plan-holding population; construction and repair trades using the drawings
- Limitations
- Archival lead only: 'Not Yet Available Online' - drawing contents were not examined and may or may not specify insulation materials. Catalog metadata does not list which plans the roll contains. Presence of drawings is not itself evidence of asbestos.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-09
-
[11]NavSource PC-798 specification block (class-standard figures for the PC-461 class: steel hull, twin Hooven-Owen-Rentschler RB-99DA diesels) [other_primary]
- Locator
- NavSource PC-798 page (hull material: steel PC-461 class; propulsion: 2 x Hooven-Owen-Rentschler RB-99DA diesels)
- Finding type
- asbestos_application
- Finding
- A 173-foot steel-hulled submarine chaser built 1943-44 with twin diesel propulsion sits inside the Navy's documented asbestos-use era; era-standard small-combatant applications - engine and exhaust/muffler lagging, machinery-space thermal insulation, gaskets, valve packing, electrical insulation, and deck coverings - are consistent with the class design but are INFERRED, not documented aboard this specific hull. The diesel plant narrows the plausible application set relative to steam-driven ships: no boiler or steam-pipe lagging pathway exists.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1943-1944 (construction era)
- Population
- Commercial Iron Works construction trades 1943-44; US Navy crew 1944-46; reserve/transfer custodial personnel 1946-49; French Navy crew 1949-55
- Limitations
- Class/era inference only - no ship-specific bill of materials, insulation survey, work package, or crew account was located; this row must not be read as proof of asbestos aboard this hull. It states a plausible-materials envelope consistent with era practice, nothing more. The undigitized INSURV material reports (NAID 2759311) and BuShips drawings (NAID 175666160) are the located leads that could confirm or defeat this inference.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-10
-
[12]GAO HRD-80-2, 'Navy Efforts To Protect Workers From Asbestos Exposure' (published 18 October 1979) [gao]
- Locator
- GAO HRD-80-2 product page Highlights (live page verified 2026-10-03)
- Finding type
- gov_survey
- Finding
- Program-level context: GAO reviewed Navy efforts to protect workers from asbestos exposure at Long Beach and Norfolk Naval Shipyards; per the product-page summary, the Navy's 1975 policy was to remove and replace with nonasbestos materials only insulation that was damaged or had to be removed for repairs, modified in 1979 to selectively replace asbestos insulation in high-maintenance areas. Documents that asbestos insulation was a fleet-wide shipbuilding/repair material in this hull's era.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Study period
- 1975-1979 (policy window describing the earlier use era)
- Population
- Navy shipyard workers (Long Beach, Norfolk Naval Shipyards)
- Limitations
- Fleet/yard-level program document - this hull is not named, and the fieldwork yards were naval shipyards (Long Beach, Norfolk), not the Commercial Iron Works construction site. Context for era practice only; establishes nothing about this vessel.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-11
-
[13]Designation cross-check: NavSource PC-798 page (Luang Prabang PT 3 -> P-628 sequence); ShipbuildingHistory Commercial Iron Works yard list ('PT 3, P 628?'); seaforces.org French Navy list ('PT 3 / P 628 FS Luang-Prabang - ex PC798 (1949-55)'); Wikipedia 'List of escorteurs of France' (secondary cross-check only); NavSource SC index number-space pattern ('hull numbers not used - See PC Index' where a steel PC occupied the number) [other_primary]
- Locator
- NavSource PC-798 timeline; ShipbuildingHistory CIW yard row; seaforces.org French-Navy ship list; NavSource 15idx.htm SC index; NARA NAID 78269171
- Finding type
- vessel_history
- Finding
- CORRECTION/CLARIFICATION of designation detail: (1) the French pennant reads variously 'PT 3' (NavSource, seaforces), 'PT-3' (yard list), and the reclassified number 'P-628' vs 'P 628a' vs 'P 628?' - PT 3 at transfer (1949), P-628 on reclassification, suffix notation unresolved; (2) NavSource's 'Struck from the Naval Register 4 May 1955' does not specify whether the US Naval Vessel Register or the French navy list is meant - the 1955 date aligns with French disposal and sale; (3) the SC-497-class numbering shared the 497-1400 space with steel PCs - a wooden SC-798 page does not exist at NavSource (HTTP 500 on both fetch attempts) and the class index marks SC numbers 'not used' where a steel PC held the number, so 'PC-798' in post-commissioning records refers unambiguously to this steel hull; a November 1943 war-diary mention (USS Breckenridge, NAID 78269171) predates commissioning and is either a fitting-out reference or a collision.
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1949-1955 (French service window)
- Limitations
- Clarifies designation notation and register ambiguity, not a material claim. The SC-798 nonexistence conclusion rests on an absent page and the index's number-space pattern, not a primary roster. French-service dates (1949-1955) are corroborated across secondary sources but no French primary record was located. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-12
-
[14]Batch-8171 search ledger (this record): NavSource PC-798 page and SC-index number-space check; uboat.net ship and commander pages; ShipbuildingHistory Commercial Iron Works yard list; HyperWar 'Ships of the U.S. Navy 1940-1945' sub-chaser list; NARA catalog 'PC-798' (98 results - muster roll, war-diary mentions, INSURV material reports, BuShips drawings, reserve-fleet rolls); NVR; DANFS (no entry); French-service secondary sources; web litigation/marketing sweep; CourtListener base queries (three of four completed - all collisions, 0 qualifying; 'USS PC-798' docket pending at write time - fleet pace budget spent) [other_primary]
- Locator
- search_ledger rows sl-uss-pc-798-pc798-01 through sl-uss-pc-798-pc798-15
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed case naming PC-798 was found in the public sources searched (see search_ledger). No DANFS entry exists for this hull, NVR does not cover hulls disposed before 1987, and the targeted asbestos/litigation web sweep surfaced only a name collision (a Detroit water-authority contract 'PC-798') - no law-firm or marketing content asserts asbestos aboard this hull. CourtListener searches (three of four mandated base queries completed): 'PC-798' opinions returned 2,286 hits - all 20 first-page results name collisions (post-conviction '-PC' docket numbers, 'P.C.' corporate suffixes); 'USS PC-798' opinions returned 14 hits - all reviewed, every one a token collision or litigation-adjacent non-match (an asbestos case matched only on reporter pagination '798'; a Navy ship-repair contract case; neither names the hull); 'PC-798' dockets matched 17,035 - all 20 first-page results collisions (probable-cause 'PC' entries, 'mj-00798' numbers, 'P.C.' firms). 0 qualifying asbestos litigation naming this vessel in any completed query. The hull's wartime document trail is administrative (muster roll, war-diary mentions) with no materials content; its strongest material documentation (INSURV reports NAID 2759311, BuShips drawings NAID 175666160) exists but is undigitized.
- 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 - era-consistent small-combatant applications remain plausible, and the undigitized NARA material records could confirm or defeat the inference. One of four CourtListener base queries ('USS PC-798' docket) is logged pending at write time (fleet-wide hourly pace budget spent between retries) - a narrow residual gap, not a negative. Does not establish or defeat any claim of exposure or legal eligibility. French-service records (1949 onward) are outside US repositories searched.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-798-pc798-13