Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
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[1]NavSource Online: Submarine Chaser Photo Archive, SC-535 (ex-PC-535) - construction timeline, designation history, specifications, transfer, 'There is no DANFS history available for SC-535' (live page verified via Firecrawl) [other_primary]
- Locator
- NavSource 12/150535.htm header block, specifications block, photo captions
- Finding type
- vessel_history
- Finding
- Documented for this hull: built by Luders Marine Construction Co., Stamford, CT; ordered 1 April 1941 (contract NOS-83458); laid down 18 June 1941; launched 9 July 1942; commissioned USS PC-535, 21 July 1942; reclassified SC-535, April 1943; transferred to France as Chasseur 143, 16 November 1944; 'Fate unknown.' Specifications: 148 tons; 110'10"; beam 17'; draft 6'6"; 15.6 knots; complement 28; armament one 40mm mount, two .50-cal machine guns, two depth-charge projector 'Y Guns,' two depth-charge tracks; propulsion two 880-bhp General Motors 8-268A diesels, Snow and Knobstedt single-reduction gear, two shafts; call sign Nan-Baker-Charlie-Xray (NBCX); served the Navies of the United States and France.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1953
- Population
- Luders Marine construction trades (1941-42); U.S. crew (1942-44); French crew (1944-53)
- Limitations
- Ship-specific history only; no asbestos or material content. NavSource is a volunteer secondary compilation (Radigan/Wright) - milestone dates corroborated against uboat.net and ShipbuildingHistory. 'Fate unknown' means final disposition past condemnation is unrecorded in this source. Live page verified 2026-10-03 (navsource.net - the .org domain is dead).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-01
-
[2]uboat.net Allied Warships of WWII, USS SC-535 (SC-535) - build/service milestone table (live page verified via Firecrawl) [other_primary]
- Locator
- uboat.net ship/8838.html warship table
- Finding type
- vessel_history
- Finding
- Milestone corroboration for this hull: SC-497-class submarine chaser, pennant SC-535; built by Luders Marine Construction Co. (Stamford, Connecticut); ordered 1 Apr 1941; laid down 18 Jun 1941; launched 9 Jul 1942; commissioned 21 Jul 1942; end service 16 Nov 1944; 'Transferred to France on 16 November 1944 being renamed CH-143.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1944
- Population
- Crew (1942-44)
- Limitations
- Secondary reference-work corroboration, not a primary registry; lists her under the SC designation throughout and does not display the PC-535 commissioned designation or the April 1943 reclassification - NavSource supplies that detail. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-02
-
[3]NavSource photo captions, SC-535 page: Sub Chaser Archives Salerno photograph (Anthony Curato) and French Navy Chasseur 143 photographs (Jacques Druel) [other_primary]
- Locator
- NavSource 12/150535.htm image table, photos 1215053001 and 1215053501
- Finding type
- historical_record
- Finding
- Photographic presence documentation for this hull: (1) 'A nest of nine SCs in the harbor of Salerno, [Sicily] shortly after the port was taken. SC-692 is at extreme left. Three ships outboard is the SC-535. Two ships outboard of her is the SC-530, with SC-691 moored to her port side' (photo by Anthony Curato, The Sub Chaser Archives) - placing SC-535 at Salerno in the period following the September 1943 Allied landing. (2) 'Chasseur 143 underway off Toulon in early 1950s' (French Navy photos courtesy of Jacques Druel) - postwar French presence at Toulon.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943; early 1950s
- Population
- U.S. crew at Salerno (1943); French crew at Toulon (early 1950s)
- Limitations
- Photographs establish physical presence, not mission or work performed. The published caption reads 'Salerno, [Sicily]' - Salerno is on the Italian mainland; the bracketed '[Sicily]' is a caption error preserved verbatim. Salerno was taken in the September 1943 Allied landing (Operation Avalanche); the caption itself gives no date. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-03
-
[4]Patrol Craft Sailors Association, 'WWII SUBCHASER (SCs)' - SC class service history and 'SC WAR RECORD' casualties table (live page verified via Firecrawl) [other_primary]
- Locator
- ww2pcsa.org/subchaser.html - 'SC WAR RECORD: SCs LOST OR DAMAGED' table and 'SC WORLD WAR II SERVICE' narrative
- Finding type
- vessel_history
- Finding
- PCSA war record lists for this hull: 'SC 535 | Damaged in storm, Southern <br> France | 09-03-44' - damaged in a storm off Southern France 3 September 1944, approximately three weeks after the Operation Dragoon landings and ten weeks before her transfer to France. Class context from the same source: the 110-ft wood-hulled SC derived from the WWI 'Splinter Fleet'; designed for offshore patrol and ASW; 'work horse of the Navy' on Atlantic-seaboard convoy duty; used as Beach Control Craft (SCC) guiding landing craft in amphibious landings in North Africa, Sicily, Italy, and France.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1944
- Population
- U.S. crew, Southern France operations (1944)
- Limitations
- Veterans' association record, not the official casualty report - extent of damage, location detail, casualties, and repairs are undocumented. The Storm-damage entry is a one-line table row. Class-context text describes the type, not this hull's assignments. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-04
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[5]ShipbuildingHistory (Colton), Luders Marine Construction yard table and yard history, Stamford CT (live page verified via Firecrawl) [other_primary]
- Locator
- shipbuildinghistory.com Luders yard table, SC-row entries; yard-history paragraph
- Finding type
- vessel_history
- Finding
- Builder record for this hull: 'SC 535 | US Navy | Sub Chaser | 136d | 110 | 21-Jul-42 | To France 1944 as Ch. 143, later P 727, condemned 1953' - Luders design 136d, 110 ft, delivered 21 July 1942, French disposition chain and condemnation year. Yard context: Luders Marine Construction founded by Alfred E. Luders in 1908 at Byram, CT; moved 1912 to Harbor Drive, Stamford Harbor; known for custom-built yachts, a major war-effort contributor; yard closed 1968. Sister SC-497 hulls from this yard shown in the same table: SC 505, SC 506 (to France as Ch. 113), SC 532 (Ch. 103, later P 729), SC 533 (Ch. 104, later P 693, Q 300), SC 534 (Ch. 122, later P 709, Q 441), plus SC 1013-1022, SC 604-607, SC 1211-1220, SC 1255-1259, SC 1355-1357.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1953
- Population
- Luders construction trades (1941-42)
- Limitations
- Reference-work table entry (one row); 'condemned 1953' is a disposition year, not a precise strike date - the French fiche's 'desarme 02 mai 1953' is consistent. '136d' is the Luders design number, not tonnage. No asbestos content; the yard table is production history, not a material record.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-05
-
[6]Marines de Guerre et Poste Navale, fiche 'CHASSEUR CH 143 (1944/1953)' - French-service record for this hull (live page verified via Firecrawl) [other_primary]
- Locator
- postenavalemilitaire.com topic t5883, 'CHASSEUR CH 143 (1944/1953)' historique and caracteristiques blocks
- Finding type
- vessel_history
- Finding
- French-service fiche for this hull: 'Chasseur de Sous-marins de l'U.S Navy SC-535, transfere a la Royale en octobre 1944. Il prend le nom de CH 727 puis de P 727 lorsqu'il devient Patrouilleur.' Hull symbols: CH143, CH727, P727. 'Mis en service : 16 octobre 1944. Desarme : 02 mai 1953.' Other names: SC-535 (U.S Navy), CH 727, P 727 (Marine nationale). French-era particulars listed: 110 tonnes, 33.70 m, beam 5.70 m, draft 2 m, 1,000 cv, 15.6 knots, 28 men, armament one 40mm + three 20mm (French fit).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-1953
- Population
- French crew (1944-53)
- Limitations
- Forum-hosted naval postal-history fiche (Capitaine Patrick, Capitaine de Vaisseau) - a knowledgeable secondary compilation, not a Marine nationale registry extract. Its French in-service date (16 Oct 1944) conflicts with the U.S. transfer date (16 Nov 1944) - likely flag-raising vs. legal transfer, unresolved (see gaps). French particulars conflict with U.S. specs (110 t vs 148 tons; 1,000 cv vs ~1,760 bhp) - carried in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-06
-
[7]La Marcophilie navale (envelopmer), 'Le Chasseur 135 (CH 135)' fiche - SC-497-class Lend-Lease program totals and postwar French employment (live page verified via WebFetch); corroborated by franco.wiki SC-497-class transfer list naming SC-535 -> CH-143 [other_primary]
- Locator
- envelopmer.blogspot.com Chasseur 135 fiche, class-program paragraphs; franco.wiki 'Classe SC-497' transfer list
- Finding type
- vessel_history
- Finding
- Class/program context for this hull's transfer: 438 SC-497-class chasseurs built for the USN 1941-44; under Lend-Lease 142 were ceded to allied navies - 78 USSR, 50 to France, 8 Brazil, 3 each Norway and Mexico. The French units 'sont integrees des 1944 aux Forces navales francaises libres puis a la Marine nationale reconstituee'; postwar employment was port-approach surveillance, convoy escort, minesweeper protection, channel policing, and securing mine-infested coastal zones with minesweeping flotillas in the Channel, Atlantic, and Mediterranean (Brest, Lorient, Saint-Nazaire, Cherbourg, Toulon, Corsica), 1945-48. The French SC-497-class transfer list identifies SC-535 as CH-143.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1944-1953
- Population
- Free French / Marine nationale crews of transferred chasseurs (1944-48+)
- Limitations
- Program-level context for the transfer mechanism and postwar employment of the type - it does not document this hull's individual assignments. The 50-to-France figure is secondary (philately fiche citing official transfer lists; Wikipedia class article cites ww2pcsa/NavSource for the same totals). The fiche itself notes transferred chasseurs are 'relativement discret dans les archives publiees' - detailed histories require SHD and NARA records. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-07
-
[8]Era inference built on: NavSource specifications (wooden-hulled SC-497 class; 2x GM 8-268A diesels, 2 shafts); WW2PCSA class description (110-ft wood-hulled subchaser); ShipbuildingHistory Luders design 136d record; GAO HRD-80-2 Navy asbestos-use era (see ev-09) [other_primary]
- Locator
- NavSource specifications block; ww2pcsa.org/subchaser.html class description; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A wooden-hulled, diesel-driven 110-ft subchaser built 1941-42 sits inside the documented Navy asbestos-use era; era-standard applications aboard a small diesel patrol craft of this period were engine exhaust lagging (exhaust runs through a wooden hull require heat insulation), machinery gaskets and valve packing, and electrical insulation. Diesel plant - no steam system, so no boiler/turbine lagging pathway; wooden hull and small machinery volume give this type materially less asbestos scope than a steel steam combatant.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1953
- Population
- Luders construction trades (1941-42); U.S. crew (1942-44); French crew (1944-53)
- Limitations
- Class/era inference only - no hull-specific material list, insulation survey, or work package located for SC-535/PC-535. Names era-typical applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull. French-era (1944-53) material state entirely undocumented.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-08
-
[9]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) - product page and highlights (live page verified via Firecrawl) [gao]
- Locator
- GAO product page HRD-80-2 highlights section
- Finding type
- gov_survey
- Finding
- GAO documented that the Navy used asbestos insulation aboard ships and only began a replace-with-nonasbestos policy in 1975 (damaged insulation or removal for repairs), expanded 1979 to selective replacement in high-maintenance areas - policy action coming decades after this hull's 1942 build, 1944 transfer, and 1953 condemnation. The GAO fieldwork yards were Long Beach and Norfolk Naval Shipyards.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (report); Navy asbestos-use era reviewed
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull - SC-535 is not named, and her entire U.S. and French service predates the policy era the report addresses. Fieldwork yards (Long Beach, Norfolk) are unrelated to her builder or bases. Does not establish materials aboard this hull, individual exposure, quantity, or present-day presence.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-09
-
[10]Batch-7910 search ledger (this record): NHHC DANFS; NavSource; uboat.net; ShipbuildingHistory Luders; WW2PCSA; postenavalemilitaire CH-143 fiche; envelopmer class fiche; NVR; GAO product page; CourtListener API v4 (authenticated, 4 base queries); secondary-web asbestos sweep [other_primary]
- Locator
- search_ledger rows sl-uss-sc-535-sc535-01 through -14
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming USS PC-535, USS SC-535, Chasseur 143, CH-727, or P-727 was found in the public sources searched. CourtListener: 'USS SC-535' opinion index 0 hits; 'USS SC-535' docket index 0 hits; 'SC-535' opinion index 13 hits - all state-court name collisions (reporter cites such as '335 S.C. 535', docket/statute fragments), none naming the vessel, none asbestos litigation. 'SC-535' docket-index query throttled by the fleet-wide pacer - logged pending, not a negative result. Secondary-web sweep surfaced zero qualifying material - no law-firm marketing page covers this hull (hits were '335 S.C. 535' reporter citations and 'sc-535' lab-reagent catalog codes).
- 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. Deck logs (NARA RG 24), BuShips contract files, and French Service historique de la Defense archives are undigitized leads. The docket-index query remaining pending means litigation coverage is nearly but not entirely complete - the three completed queries returned zero qualifying hits. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-10
-
[11]Designation cross-check: NavSource SC-535 page ('Commissioned USS PC-535, 21 July 1942; Reclassified SC-535, April 1943') and the identical commissioned-as-PC/reclassified-SC-April-1943 pattern on NavSource SC-666 (12/150666), SC-692 (12/150692), and SC-770 (12/150770) records [other_primary]
- Locator
- NavSource 12/150535.htm (SC-535), 12/150666.htm (SC-666), 12/150692.htm (SC-692), 12/150770.htm (SC-770) designation lines
- Finding type
- historical_record
- Finding
- CORRECTION/CLARIFICATION on the 'PC-535' designation: this hull was commissioned as USS PC-535 on 21 July 1942 and reclassified SC-535 in the class-wide April 1943 redesignation - the 'ex-PC-535' NavSource header reflects a real commissioned designation, not an error. However, she was never a PC-461-class vessel: the PC-461 class is the 173-ft steel-hulled patrol craft, while this hull was always the 110-ft wooden SC-497 design (Luders design 136d). The PC number block was an administrative designation applied to SC-design hulls until April 1943. Batch QA scoping ('PC-535 never existed as a PC vessel') is thus partially off: PC-535 did exist as a commissioned designation for ~9 months, but always on an SC-design wooden hull - this record is correctly filed under SC-535.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1943 (designation window)
- Limitations
- Corrects framing, not a material claim. The April 1943 reclassification mechanism is documented only through NavSource's consistent records across multiple hulls - no BuShips/SECNAV directive text was located. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-535-sc535-11