Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 899-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: PHANTOM (never commissioned)
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-505-pc505-pkt-899-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, SC-505 (ex-PC-505) - construction timeline, reclassification, service entries, disposal, specifications (verified live via firecrawl) [other_primary]
- Locator
- NavSource 12/150505.htm header block, SC-497 class timeline, specifications block, CO table, photo captions
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 24 February 1941 by the Luders Marine Construction Co., Stamford, CT; launched 23 February 1942; commissioned PC-505 on 21 April 1942; reclassified SC-505 in April 1943; visited Auckland, New Zealand 6-17 October 1944; struck from the Naval Register 3 January 1946; transferred to the Maritime Commission 6 May 1947; registered in 1948 to the Sea Service Co. of Houston, TX as the miscellaneous vessel S.S.C. IV; fate unknown. Spec block: 148 t. (1948 - 121 t.); length 110'10" (1948 - 105.7'); beam 17' (1948 - 18.4'); draft 6'6" (1948 - 10.3'); speed 15.6 kts; complement 28 (1948 - three); one 40mm mount, two .50-cal. machine guns, two 'Y-gun' depth-charge projectors, two depth-charge tracks; two 880-bhp GM 8-268A diesels, Snow & Knobstedt single-reduction gear, two shafts. Call sign NUNQ; S.S.C. IV call sign KTSI. CO listed: ENS J. H. Burcher, USNR (1945). A c.1945 photograph places her in Hawaii moored outboard of a patrol craft sweeper and YMS-101, with PC-602 across the pier.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Luders construction trades (1941-42); crew (1942-45); Maritime Commission transfer personnel (1947); merchant crew S.S.C. IV (1948)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates generally track official records but the reclassification date (April 1943) conflicts with the hull's own deck-log usage ('SC 505' from 1 October 1942, ev-02) and with a secondary-source September 1942 variant; see gaps. Page states explicitly 'There is no DANFS history available for SC-505.' Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-01
-
[3]NARA, RG 38 'World War II War Diaries, Other Operational Records and Histories' (series NAID 4697018): USS SC-505 - War Diary, 10/1/42 to 12/31/42, NAID 134077859 (99 images; ship's deck log transmitted by CO R. T. Reid, Lt. USNR, 22 January 1943, letterhead 'U.S.S. SUB. CHASER #505'). Bobcat = Bora Bora identification corroborated by Bureau of Yards and Docks history 'Building the Navy's Bases in World War II' ch. 24 and 'The Logistics of Advance Bases' ch. IV (HyperWar transcriptions of official histories) [other_primary]
- Locator
- NAID 134077859, images 0138-0187b (Fold3 file 268371126): transmittal letter (0138), log pages of 2-4 October 1942 (0140a-0141b), 29 and 31 December 1942 (0186a, 0187a)
- Finding type
- historical_record
- Finding
- Primary-source deck log for this hull: October 1942 'Attached to the Gulf Sea Frontier' - 2 October steaming in Task Unit 91.1.6 on escort along the north coast of Cuba (passed Cay Lobos abeam 4 miles; Cayo Paredon Grande light abeam 7 miles; Bahia de Cadiz abeam 5 miles); 4 October moored Pier 2, N.O.B. Key West. Late December at the Canal Zone - 29 December moored Pier #1, Coco Solo; 31 December moored Pier #6, Navy Base Balboa. At 1416 on 31 December 1942, pursuant to a ComPanSeaFron secret despatch (301537 of Dec. 1942), she got 'underway in company with USS Patuxent, SC 504, 514, 531, 640, 650, 654, 668, 669 and 748 to advance base Bobcat' - Bobcat was the code name for the Bora Bora advance base - formed on USS Patuxent. This is the documented Atlantic-to-Pacific transit that put her in the Solomons theater by April 1943 (see ev-04).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-10-01 to 1942-12-31
- Population
- SC-505 crew (Oct-Dec 1942); convoy crews of USS Patuxent and nine companion SCs (transit)
- Limitations
- Documents movements and assignments, not material content - no asbestos information. The log's own header styles the ship 'SC 505' from 1 October 1942, and the January 1943 transmittal calls her 'U.S.S. SUB. CHASER #505' - earlier usage than NavSource's stated April 1943 reclassification date (see ev-10 and gaps). Handwritten-log transcription of the escort list and despatch line carried as read ('ComPanSeaFron' reading consistent with the COMPANSEAFRON war-diary series present in the same catalog); a secondary account of the same convoy (ssarkansan.com, from SC-654's side) lists nine SCs including 505 but omits 650 - one-hull list variance noted.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-02
-
[4]NARA, RG 38 'World War II War Diaries' (series NAID 4697018): USS CONWAY - Act Rep, Screening LST's in Landing Ops, Vella La Vella, 8/21/43, NAID 78141151 (13 images) [other_primary]
- Locator
- NAID 78141151, narrative page (image 0813, Enclosure A)
- Finding type
- historical_record
- Finding
- Primary-source action report naming this hull in combat operations: CTF 31 operation order A12-43 of 11 August 1943 (modified by CTF 31 despatch 180303 Aug 1943) directed Task Group 31.7, Third Echelon (Captain G. B. Carter, U.S.N., ComLSTFlotFIVE, Task Group Commander), 'with ComDesDiv 44 in CONWAY, EATON, PRINGLE, LST's 354, 398, 399, and SC 505 to depart Guadalcanal-Russells area on 20 August 1943 and proceed in company at 9 knots ... to landing position at Barakoma Beach, Vella LaVella Island, Solomons, to arrive at 0700, 21 August 1943.' Conway's narrative records: 'At 1000 20 August 1943 rendezvous at Point Baker south of Russells Islands was made with SC 505 and LST 398'; and off Tetipari Island 'SC 505 took the wrong turn. CONWAY chased the SC and after much difficulty finally hailed her and put her back on the intended course.' The formation ran Gizo Strait through the night with SC-505 between EATON and CONWAY - placing this hull inside the Vella Lavella landing operation for which her battle-star credit (ev-04) was awarded.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-08-20 to 1943-08-21
- Population
- SC-505 crew; TG 31.7 crews (Conway, Eaton, Pringle, LST-354/398/399) during the Vella Lavella echelon movement
- Limitations
- Documents the hull's presence and role in the landing force - an operations record, not a material or condition survey; no asbestos information. Single-echelon account: SC-505's own version of events for the same days is not in this file unit.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-03
-
[5]Navy and Marine Corps Awards Manual, NAVPERS 15,790 (Rev. 1953), Part IV Section 2(16) - WWII area-campaign engagement-star credits by ship (verbatim transcription, HyperWar) [other_primary]
- Locator
- Awards-IV-16.html, Asiatic-Pacific engagement-star ship list ('SC 505' entry) and P19-1/P21-5 operation table entries
- Finding type
- historical_record
- Finding
- Official U.S. Navy awards-manual entry for this hull: 'SC 505: 21 Aug 43 - P21-5; 7 Apr 43 - 20 Jun 43 - P19-1.' The manual's operation table keys P21-5 to 'Vella Lavella occupation' (15 Aug - 16 Oct 43) and P19-1 to 'Consolidation of Southern Solomons' (8 Feb - 20 Jun 43). Two engagement-star credits - confirming she was operating in the Solomons by April 1943 (consistent with the 31 December 1942 Balboa departure for Bobcat/Bora Bora in ev-02) and was present for the 21 August 1943 Vella Lavella landing documented in ev-03.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-04-07 to 1943-08-21 (credit windows)
- Population
- SC-505 crew during credited windows (Apr-Jun 1943; Aug 1943)
- Limitations
- Establishes campaign-credit eligibility (area-time presence), not day-by-day position - the manual lists engagement windows, not movements. No asbestos or material content. Live NHHC version of the awards data not located; HyperWar transcription of the official 1953 manual used.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-04
-
[6]uboat.net Allied Warships, USS SC-505 (SC-505) - build data and wartime commanding-officer list [other_primary]
- Locator
- uboat.net warships/8811.html, identity table and 'Commands listed' section
- Finding type
- vessel_history
- Finding
- Corroborates milestones for this hull: ordered 14 January 1941; built by Luders Marine Construction Co. (Stamford, CT); laid down 24 February 1941; launched 23 February 1942; commissioned 21 April 1942 (listed under her later designation SC-505). Wartime CO list: W. E. Byrne, USNR (from 21 Apr 1942); R. T. Reid, USNR (mid/late 1942 - 1 Jun 1943); E. R. Silvers (mid 1943); J. M. Nagle (to late 1943); W. H. Thornton (to early 1944); Ensign John Henry Burcher, USNR (early-mid/late 1944); R. C. Jones (to mid 1945); J. H. Michna (to mid/late 1945); E. E. Lambert (to 11 Dec 1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Population
- SC-505/PC-505 wartime crew
- Limitations
- uboat.net is a specialist secondary compilation, not an official registry - its data generally track official sources; the CO list is corroborated where it overlaps primary sources (R. T. Reid signs the January 1943 deck-log transmittal, ev-02; Burcher appears in NavSource's CO table, ev-01). CO coverage is stated by uboat.net to be limited to WWII duration. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-05
-
[7]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 (1941-42) and service era (1942-45).
- 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. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403 - standing access gap logged by Batch 98 on 2026-09-18 and reconfirmed this session) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-06
-
[8]Era inference built on: NavSource spec block (SC-497 class - wooden hull, twin GM 8-268A diesels, no steam plant); uboat.net class data; GAO HRD-80-2 Navy asbestos-use era (ev-06) [other_primary]
- Locator
- NavSource spec block (propulsion, complement); GAO HRD-80-2; class/era literature
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel submarine chaser built 1941-42 inside the Navy's documented asbestos-use era would have carried era-standard small-craft asbestos applications: engine exhaust lagging on the two GM 8-268A diesel exhaust runs, gaskets and packing in machinery and piping joints, and minor thermal/acoustic insulation - inside a confined 110-foot wooden hull with a 28-man crew. She carried no boilers, steam lines, or turbines: the boiler/turbine lagging pathway that dominates asbestos profiles of steam-driven hulls does not apply, and her total installed ACM footprint was materially smaller than that of a steam vessel.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Luders construction trades (1941-42); crew (1942-45); Maritime Commission and merchant personnel (1947-48)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for PC-505/SC-505. Names era-standard applications for a wooden diesel subchaser, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-07
-
[9]Stamford Historical Society, Luders Marine Construction Co. Stamford, CT page (yard history and bibliography); corroborating press: New York Times, 'A Shipyard Legend Named Luders' (9 July 1995) - located via live search excerpt, full text not retrievable [museum_official]
- Locator
- stamfordhistory.org/ludersbrochure.htm; NYT 1995-07-09 article URL (blocked to automated fetch); Wikimedia Commons file 'Subchaser at Luders Marine, Stamford CT in March 1942.jpg' (Liberman OWI photo, PC-506 identified)
- Finding type
- historical_record
- Finding
- The builder's context for this hull: Luders Marine Construction Co. operated on the west branch of Stamford Harbor for roughly 60 years until 1968, building yachts and wooden military craft for both world wars and Korea - including the 110-foot subchasers of this hull's class (a March 1942 U.S. government photograph by Howard Liberman shows an SC-497-class boat - identified as PC-506, a same-yard sister - under construction at Luders). Press coverage of the yard's history reports that company records were lost in a 1962 shipyard fire - consistent with the absence of builder documentation for this hull.
- Verification
- partial
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Study period
- 1941-1968
- Population
- Luders Marine construction trades (1941-42)
- Limitations
- Yard-level context only - says nothing about this hull's materials. NYT article (nytimes.com/1995/07/09/nyregion/a-shipyard-legend-named-luders.html) could not be fetched for full-text verification (firecrawl does not support nytimes.com); the 1962-records-fire detail rests on the live search-result excerpt and is carried as partially verified. Stamford Historical Society page verified live 2026-10-03.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-08
-
[10]Batch-7880 search ledger (this record): NavSource; uboat.net; NARA file units NAID 134077859 and 78141151; NAVPERS 15,790 (HyperWar transcription); MARAD Vessel History Database; NVR; NHHC/DANFS probes; secondary web litigation sweep; CourtListener (see sl-uss-pc-505-pc505-09 for status) [other_primary]
- Locator
- search_ledger rows sl-uss-pc-505-pc505-01 through -13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or litigation naming USS PC-505 or SC-505 was found in the public sources searched. Secondary web sweeps surfaced no qualifying case and no law-firm marketing content specific to this hull - the hull is too obscure to appear in the usual 'asbestos ships' listicles. Supporting absences: NavSource states no DANFS entry exists; NVR excludes pre-1987 disposals; MARAD Vessel History Database returns no entry under SC-505, PC-505, or S.S.C. IV.
- 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. CourtListener coverage is PARTIAL: two of four mandated base queries completed ('PC-505' opinion - 6 hits all name collisions; 'PC-505' docket - 221 hits, first-page all token co-occurrence collisions); 'SC-505' opinion + docket and the overflow-authorized 'PC-505' asbestos variant could not be run - fleet pacing budget saturated all session (~18 spaced attempts over ~3 h, see search_ledger sl-09/sl-13). The SC-505 designation litigation search is an open gap, not a negative result. Builder records for this hull are largely lost (1962 Luders yard fire, ev-08); RG 24 deck logs for 1943-45 are an undigitized lead. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-09
-
[11]Designation cross-check: NavSource SC-505 page and PC/SC photo index (twelve hulls commissioned as PC-497 - PC-508, reclassified SC-497 - SC-508); NARA deck log styling 'SC 505' from 1 October 1942 (ev-02); navypedia SC-497 table (PC505 -> SC505 dated 9.1942); shipbuildinghistory/jounin corroboration [other_primary]
- Locator
- NavSource 12/150505.htm and PC/SC index; NAID 134077859 image 0140a (log header 'SC 505', 1-4 Oct 1942) and image 0138 (transmittal); navypedia.org/ships/usa/us_sc_sc.htm
- Finding type
- historical_record
- Finding
- CORRECTION: this hull is cataloged in the batch input as 'USS PC-505' - which reads naturally as a PC-461-class 173-foot steel patrol craft. She is not: she is a 110-foot wooden-hulled SC-497-class submarine chaser that was commissioned under the designation PC-505 on 21 April 1942 and reclassified SC-505 (NavSource: April 1943). The twelve hulls PC-497 - PC-508 all followed the same commissioned-as-PC, reclassified-to-SC sequence. Designation-date nuance: the hull's own deck log already styles her 'SC 505' on 1 October 1942 and her CO's 22 January 1943 transmittal calls her 'U.S.S. SUB. CHASER #505' (ev-02), and navypedia carries a September 1942 reclassification date - while NavSource holds April 1943; the formal reclassification date is unresolved (see gaps).
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1943 (designation window)
- Limitations
- Corrects a class-identity error that changes every asbestos-relevant characteristic of the record (wooden diesel subchaser vs steel steam-era patrol craft). The reclassification-date conflict itself is unresolved: three sources give three positions (log usage Oct 1942; navypedia Sep 1942; NavSource Apr 1943). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-505-pc505-10