Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
-
[1]research packet 869-packet.md (2 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-1218-pc1218-pkt-869-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, PC-1218 - construction/milestone timeline, specifications, dual-navy service, photo captions (verified live, HTTP 200) [other_primary]
- Locator
- NavSource 12/011218.htm timeline block, specifications block, photo captions (Bob Daly/PC-1181; Robert Hurst, Royal Thai Navy photo c.1954 from Jane's Fighting Ships 1964/65)
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 2 July 1943 by the Luders Marine Construction Co., Stamford, CT; launched 24 October 1943; commissioned USS PC-1218, 29 May 1944; transferred to the Maritime Commission 7 June 1948; sold to Thailand in 1952 and named HTMS Sukeip (PC 5); placed in reserve and struck from the Navy list in 1991; decommissioned 1 April 1994; fate unknown. PC-1218 'served the Navies of the United States and Thailand.' Call sign Nan-Charlie-Able-Able; HTMS Sukeip call sign Hotel-Sierra-Yankee-Hotel. Specifications: displacement 280 t.(lt), 450 t.(fl); length 173'8"; beam 23'; draft 10'10"; speed 19 kts; complement 65. Armament: one 3"/50 dual purpose gun mount, one 40mm gun mount, two 20mm guns, four depth charge projectors, two Mk20 Mousetrap rocket launchers, two Mk32 MOD 3 single tube anti-submarine torpedos and two depth charge tracks. Propulsion: two 1,480bhp Hooven-Owen-Rentschler RB-99DA diesel engines (Serial No. 7331 and 7332), Westinghouse single reduction gear, two shafts. Page further states: 'There is no DANFS History currently available for PC-1218.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1994
- Population
- Luders construction trades (1943-44); US Navy crew (1944-48); Royal Thai Navy crew (1952-94)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestones generally track official sources and are here corroborated by HyperWar, shipbuildinghistory.com, thaiseafarer.com, and NavalCoverMuseum. The 1952 sale-to-Thailand date conflicts with secondary sources giving 1948 (the MARAD transfer year); NavSource chain carried - see gaps. Ship-specific history only; no asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-01
-
[3]HyperWar/ibiblio transcription of 'Ships of the U.S. Navy, 1940-1945' (official wartime publication), Submarine Chasers section - PC-461 class spec block and hull listing (verified live, HTTP 200) [other_primary]
- Locator
- ships-sc.html, 'PC-461 Class' spec block and hull table rows PC-1217 / PC-1218-1224
- Finding type
- vessel_history
- Finding
- The official-era class listing places this hull in commission: the table groups 'PC-1218-1224' under the 1942-44 commissioning window. PC-461 class spec block: displacement 284 tons; length 173'8"; beam 23'; draft 10'10"; speed 21 knots; armament 1 3"/50, 1 40mm, 5 20mm, 2 depth charge throwers (mousetraps), 2 K-guns, 2 depth charge racks; complement 65; diesel engines, 2 screws, 2,280 shaft hp.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1940-1945 (publication coverage)
- Population
- US Navy crews of PC-461-class units (1942-44 commissioning window)
- Limitations
- Names the hull only inside a block range (PC-1218-1224) with a commissioning-era window, not an individual service narrative; class spec block is class-level - per-hull fitted armament varied (NavSource carries two 20mm plus Mk20 Mousetraps and Mk32 torpedo tubes; the class block carries five 20mm). Displacement listed 284t (class) vs NavSource 280t lt / 450t fl; speed 21 kt (class) vs NavSource 19 kt - see gaps. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-02
-
[4]uboat.net Allied Warships of WWII, USS PC-1218 (PC-1218) - build dates, command roster, Thailand transfer (secondary specialist compilation) [other_primary]
- Locator
- uboat.net/allies/warships/8745.html ship table and 'Commands listed' block; uboat.net/allies/commanders/14778.html (Pritchard)
- Finding type
- vessel_history
- Finding
- uboat.net records for this hull: PC-461 class patrol craft; built by Luders Marine Construction Co., Stamford, CT; ordered 6 March 1942; laid down 2 July 1943; launched 24 October 1943; commissioned 29 May 1944; 'Sold to Thailand in 1948 being renamed Sukeip.' Wartime command roster: Robert A. Pritchard, USNR (29 May 1944 - mid 1945); George R. Poor, USNR (mid 1945 - mid/late 1945); R. D. Knox, USNR (mid/late 1945 - late 1945).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Lt. Robert A. Pritchard USNR and successors; PC-1218 crew (1944-45)
- Limitations
- Secondary specialist compilation (Allied Warships database) - not a primary registry; the 'ordered 6 March 1942' contract date is carried here only and is unverified against a primary contract record. Its 'sold to Thailand in 1948' conflicts with NavSource's documented chain (Maritime Commission transfer 7 June 1948, sale 1952) - likely tracks the 1948 custody transfer rather than the foreign sale; NavSource carried, conflict in gaps. All three listed commanders are USNR - consistent with wartime reserve crewing of the class. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-03
-
[5]SeaFarer Thai Naval Museum pages (thaiseafarer.com), 'เรือหลวงสุครีพ' (HTMS Sukeip) - Royal Thai Navy acquisition program and service dates (Thai-language secondary compilation citing NavSource, uboat.net, thaifighterclub.org) [other_primary]
- Locator
- thaiseafarer.com/naval-museum/pc461-5/ - 'คุณลักษณะของเรือ' spec block and program narrative
- Finding type
- vessel_history
- Finding
- Thai-side documentation of this hull's second career: HTMS Sukeip, formerly PC-1218, was received under the US post-WWII assistance program (war-surplus materiel loan for Thailand) which procured eight PC-461-class anti-submarine patrol craft in three tranches - phase one HTMS Sarasin, Thayanchon, Khamronsin; phase two HTMS Phali and Sukeip; phase three HTMS Tongpliu, Liulom, Longlom. Spec block (dates converted from Buddhist Era): number PC 5; laid down 2 July 1943; launched 24 October 1943; commissioned US Navy 29 May 1944; commissioned Royal Thai Navy 16 September 1952 (16 ก.ย. 2495); decommissioned 1 April 1994 (1 เม.ย. 2537); builder Luders Marine Construction Co., Stamford, CT. Later in Thai service she was converted to a gun patrol craft with reduced armament (3"/50, 40mm, GAM-BO, 20mm). Thai-side figures: 52 m length, 7 m beam, 2.2 m draft, 228 t normal / 480 t max displacement, 20.2 kt maximum, complement 65, 3,000-mile range; 1,480 hp Hooven-Owen-Rentschler diesels, Westinghouse single reduction gear, twin screws.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1952-1994 (Thai service)
- Population
- Royal Thai Navy crew of HTMS Sukeip (1952-94)
- Limitations
- Secondary Thai-language compilation; its source list is NavSource, uboat.net, thaifighterclub.org and wings-aviation.ch, so it is not independent of the other secondary records - but it carries Thai-side service detail (1952 commissioning date; the 8-ship/3-tranche acquisition program; the gun-patrol-craft conversion) found nowhere else consulted. The 16 September 1952 Thai commissioning corroborates NavSource's 'sold 1952' against the 1948 variants. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-04
-
[6]U.S. Naval Institute, Naval History Magazine Vol. 10 No. 1 (February 1996), 'Historic Fleets' by A. D. Baker III (Editor, Combat Fleets of the World) - PC-461-class program history naming this hull (cited via Wayback capture 2024-01-13; live page is paywalled and returned HTTP 403 to automated fetch 2026-10-03) [reputable_press]
- Locator
- Wayback capture 20240113101134 of usni.org Naval History Feb 1996 'Historic Fleets', paragraphs 1-2
- Finding type
- historical_record
- Finding
- A. D. Baker III's authoritative class summary: 'Of the 403 total in the original PC-461-class program, 24 were completed as gunboats (PGMs), and 60 were canceled. Some 35 of those completed were adapted as amphibious assault craft control vessels (PCCs), and 46 were transferred to Allied navies under Lend-Lease (France took 32 and Brazil eight). Altogether, 15 yards participated in the program. The first vessel completed, PC-461, was commissioned in March 1942 and the last in 1944.' Nine modified units were built in France in the 1950s with US funds, three in Portugal, eight for Turkey in 1964-65; the last built was Papudo (U.S. PC-1646), Chile, 1971. Naming this hull directly: 'Of the wartime-built units, only two, the former PC-1218 and PC-1253, remain in naval service, in the Royal Thai Navy.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1996 (article coverage)
- Population
- Royal Thai Navy crews of ex-PC-1218 and ex-PC-1253 (to 1994/96)
- Limitations
- Names PC-1218 as one of the last two wartime-built units still in naval service as of the February 1996 issue - this conflicts with NavSource and thaiseafarer.com, which both date Royal Thai Navy decommissioning 1 April 1994; unresolved, logged in gaps (the article may have been prepared before the decommissioning, or the 1994 date may be inaccurate). Class-program figures are authoritative secondary (Baker was the long-time Combat Fleets of the World editor), but the 403-program/341-constructed counts differ across sources - class context only, carried as stated here. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-05
-
[7]shipbuildinghistory.com (T. Colton), 'Luders Marine, Stamford CT' - builder yard history and production-table row for this hull [other_primary]
- Locator
- luders.htm yard-history paragraph; production table row 'SC 1218'
- Finding type
- vessel_history
- Finding
- Builder documentation: Luders Marine Construction was founded by Alfred E. Luders in 1908 at Byram, CT, moved in 1912 to Harbor Drive, Stamford Harbor; known for custom-built yachts, a major contributor to the war effort, and post-war standard-design sailing boats; the yard closed in 1968 and the site is now Brewer Yacht Haven Marina. The production table lists this hull (as 'SC 1218'): US Navy Sub Chaser, contract type 463d, 173 ft, delivered 29 May 1944, disposition 'To Thailand 1948 as Sukeip (PC 5), struck 1991.' The table also documents the yard's WWI 110-ft sub chasers (SC 318-322), 1920s Coast Guard patrol boats, WWII SC-class 110-footers and 173-ft units, and sisters including 'SC 1217' (sold for scrap 1948, still at Rossville NJ 2008).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1908-1968 (yard history); 1943-44 (this hull's build)
- Population
- Luders Marine construction trades (wartime peak ~1,500 workers per Stamford Advocate - see ev-07)
- Limitations
- Respected secondary shipyard compilation (Colton) - corroborates the delivery date and the Thailand disposition but repeats the '1948' transfer year that conflicts with NavSource's 1952 sale; the table's 'SC' prefix on 173-ft hulls is a table convention (these were PC-designated craft). Yard-history facts are builder-level context, not hull documentation. No asbestos or material content. Luders Marine Construction is not a shipyards.json entry - gap logged.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-06
-
[8]New York Times, 'A Shipyard Legend Named Luders' (9 July 1995); corroborated by Stamford Advocate (Angela Carella), 'Shipyard historian: BLT got the peninsula, missed the point' - builder yard wartime scale and the 1962 records fire (NYT page returns HTTP 403 to automated fetch - access gap disclosed; quoted content verified via search-index excerpts) [reputable_press]
- Locator
- nytimes.com 1995-07-09 nyregion piece (Luders Reunion/Stamford Historical Society exhibition); stamfordadvocate.com Carella column
- Finding type
- historical_record
- Finding
- Yard-level documentation of this hull's builder: NYT (1995) reports Luders Marine Construction Company ran in Stamford Harbor for 60 years until its demise in 1968, building pleasure and war vessels, and that 'records were lost during a fire in the shipyard in 1962.' The Stamford Advocate reports ~1,500 workers at Luders during wartime and ~270 vessels built for the Navy, Army and Coast Guard (per yard historian Bob Wallstrom), by most reports the largest shipbuilder in Connecticut; a 1943 aerial photograph showed military submarine chasers and patrol craft in production; the yard later built eight Navy minesweepers in the 1950s; the site was demolished in 2011.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1908-1968 (yard); 1962 (records fire)
- Population
- Luders Marine construction trades, peak ~1,500 wartime workers
- Limitations
- Builder-level context only - no hull-specific or material content. Press-retrospective sourcing (journalist + yard historian Wallstrom), not company records - and the 1962 fire means primary Luders construction records for this hull are probably destroyed (archival gap logged). Wartime workforce and hull counts are Wallstrom's figures via the Advocate.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-07
-
[9]Library of Congress, FSA/OWI collection, Howard Liberman photographs (March 1942), 'Production. Submarine chasers... Marine Construction Company, Stamford, Connecticut' - wartime builder-yard photographic series (item page fetched successfully; HEAD/curl requests 403 - bot-restriction only, page live) [other_primary]
- Locator
- loc.gov/item/2017693728 (FSA/OWI, Liberman, March 1942); commons file 'Subchaser at Luders Marine, Stamford CT in March 1942' (PC-506)
- Finding type
- historical_record
- Finding
- Library of Congress holds the Office of War Information photographic series by Howard Liberman documenting 'Marine Construction Company, Stamford, Connecticut' converting from pleasure craft to Navy construction - including scale-model and shop views of subchaser production, March 1942 (item 2017693728; a companion image in the series shows SC-497-class submarine chaser PC-506 commissioned at the yard). This is the federal photographic record of this hull's builder during the war production run in which PC-1218 (keel July 1943) was built.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942
- Population
- Luders Marine production workforce (1942)
- Limitations
- Archival lead only - dated March 1942, fifteen months before PC-1218 was laid down; documents the yard's wartime subchaser production generally, not this hull, and contains no asbestos or material content. The Liberman series may include additional Luders frames relevant to the construction era; only the referenced item was verified.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-08
-
[10]NavalCoverMuseum wiki, 'PC 1218' - ship name and designation history [museum_official]
- Locator
- navalcovermuseum.org/wiki/PC_1218, 'Ship Name and Designation History' and 'Postmarks' sections
- Finding type
- historical_record
- Finding
- Independent corroboration of the dual designation sequence for this hull: '1. USS PC-1218; 2. HTMS SUKEIP PC-5 (Thailand Naval Service).' The museum holds no covers or postmarks for the ship ('NO PC-1218 POSTMARKS AVAILABLE AT THIS TIME').
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-1994
- Limitations
- Confirms the name/designation sequence only; the page is a stub with no dated covers, so it does not independently date either commissioning period. Museum volunteer wiki, not a primary registry. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-09
-
[11]Era inference built on: NavSource specifications (two 1,480bhp Hooven-Owen-Rentschler RB-99DA diesels, Westinghouse reduction gear, 2 shafts - direct diesel drive, no steam plant); HyperWar class spec (diesel engines, 2 screws, steel hull per class literature); GAO HRD-80-2 Navy asbestos-era documentation (ev-11); USNI Baker class history (15 yards built the 403-unit program 1942-44) [other_primary]
- Locator
- NavSource specifications block; HyperWar PC-461 class spec; GAO product page HRD-80-2
- Finding type
- asbestos_application
- Finding
- A steel-hulled patrol craft built 1943-44 for the US Navy sits inside the Navy's documented asbestos-use era, which did not begin substituting alternative insulation until the early 1970s (GAO HRD-80-2). Era-standard asbestos applications aboard a 173-ft diesel-propelled combatant of this period were engine and exhaust lagging in the machinery spaces, thermal insulation on hot piping, gaskets and valve packing on machinery and piping systems, electrical insulation, and asbestos-containing interior construction materials consistent with WWII Navy building practice. As a direct-diesel craft she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply; the relevant systems are the two Hooven-Owen-Rentschler diesels, their exhaust runs, auxiliary machinery, and hull construction materials.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1943-1994
- Population
- Luders construction trades (1943-44); US Navy crew (1944-48); MARAD/mothball trades (1948-52); Royal Thai Navy crew and refit trades (1952-94); any disposal/recycling workers post-1994
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or construction specification located for PC-1218. Names era-standard applications, not confirmed installed materials; no quantity; no manufacturer attribution. Luders Marine construction records were reportedly destroyed in a 1962 shipyard fire (ev-07), so builder-side documentation may not exist. Does not establish individual exposure or present-day material.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-10
-
[12]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 entire construction (1943-44) and US service era (1944-48), and the era of any asbestos installed during her build that could have remained through her Thai service.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- 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 - PC-1218 is not named. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403, confirmed this session) - content via product-page description; same standing defect as prior batches.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-11
-
[13]Batch-7714 search ledger (this record): NavSource live page; HyperWar official-era publication; uboat.net Allied Warships; thaiseafarer.com Thai museum page; USNI Naval History via Wayback; shipbuildinghistory.com builder table; NYT + Stamford Advocate; Library of Congress FSA/OWI; NavalCoverMuseum; GAO product page; CourtListener (blocked); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-pc-1218-pc1218-01 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-1218 / HTMS Sukeip was found in the public sources searched. CAVEAT: CourtListener could not be queried this session - four authenticated attempts alternated between the fleet-wide pacing budget and the API's daily-quota signature (final attempt: ~2.2h reset, the daily-spent signature); logged as blocked in search_ledger, not as a negative result. Secondary web sweeps surfaced no qualifying case; the only 'asbestos' content found is law-firm marketing material (navyshipexposure.com publishes a PC-461-class page asserting 'asbestos-containing gasket materials' and asbestos building materials 'consistent with WWII-era Navy construction specifications' with no primary sourcing - and it describes the class propulsion as 'four General Motors diesel engines,' inconsistent with the documented two Hooven-Owen-Rentschler units on this hull - excluded by source policy and logged in gaps).
- 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 - and the litigation repository search is a genuine open gap (blocked, not run). NARA deck logs (RG 24), Luders construction records (reportedly destroyed 1962), MARAD custody records, and Royal Thai Navy maintenance records are undigitized or closed leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1218-pc1218-12