Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 912-packet.md (4 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-600-pc600-pkt-912-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, PC-600 page (build data, milestones, specifications, photo captions; page verified live 2026-10-03 - navsource.org is dead, navsource.net used) + uboat.net Allied Warships record 8577 (order date, commanding-officer list) [other_primary]
- Locator
- NavSource 12/010600.htm header block, specifications block, photo caption table; uboat.net/allies/warships/8577.html data block + commands table
- Finding type
- vessel_history
- Finding
- Documented for this hull: ordered 20 September 1941 (uboat.net); laid down 28 February 1942 by Consolidated Shipbuilding Corp., Morris Heights, New York, NY; launched 9 May 1942; commissioned USS PC-600, 18 August 1942; decommissioned January 1947 and laid up in the Pacific Reserve Fleet, Columbia River Group; transferred to South Korea 21 January 1952 and named Myo Hyang San (PC 706); scrapped by South Korea in 1968. Wartime commanders (uboat.net): C W Eshom USNR (Aug 1942-mid 1943), L M Jacobson USNR (mid 1943-mid/late 1944), A S Woodworth USNR (mid/late 1944-mid 1945), D S Shaw USNR (1 Jun 1945-late 1945). Specifications: displacement 280 t.(lt), 450 t.(fl); length 173'8"; beam 23'; draft 10'10"; speed 20.2 kts; complement 65; armament one 3"/50 dual purpose mount, one 40mm mount, three 20mm guns, two rocket launchers, four depth charge projectors, two depth charge tracks; propulsion two 1,440bhp Fairbanks Morse 38D8 1/8 diesel engines (Serial No. 832353 and 832354), Westinghouse single reduction gear, two shafts. Photo captions place this hull off the Puget Sound Navy Yard on 28 February 1944 (Naval History and Heritage Command photo NH 86361), flying her 'Homeward Bound' commissioning pennant c.1945, and departing Mare Island on 21-22 January 1946 on post-repair trials following an overhaul at that yard 2-30 January 1946 (one captioned frame circles areas the shipyard modified). Page notes 'There is no DANFS history available for PC-600.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1968
- Population
- Consolidated Shipbuilding construction trades (1942); wartime crew (~65); Mare Island and Puget Sound yard trades during availabilities; ROK Navy crew (1952-68); South Korean shipbreakers (1968)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates generally track NVR/DANFS but no DANFS entry exists for this hull to check against. Specifications are class-level figures; armament/displacement/speed vary slightly across sources (see gaps). No asbestos content. The January 1946 Mare Island overhaul and Feb 1944 Puget Sound presence are photo-caption documentation, not yard work-package records.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-600-pc600-01
-
[3]The National WWII Museum, Digital Collections oral history: Henry A. Tacket (radioman, USS PC-600), 'Becoming a Sailor' and 'Alaskan Duty' segments [museum_official]
- Locator
- ww2online.org/view/henry-tacket, 'Becoming a Sailor' and 'Alaskan Duty' segment annotations
- Finding type
- historical_record
- Finding
- A crewman's eyewitness account of this hull's wartime service: Tacket trained on PC-600 while she was under construction in New York; the boat conducted anti-submarine training runs at the Key West training base, transited toward the Panama Canal (sounding-equipment failures repaired at San Diego), and proceeded to Seattle. PC-600 then escorted a troopship from Seattle to Kodiak, Alaska, losing contact in heavy seas; escorted a merchant ship back to Seattle; and on a subsequent Alaska run encountered heavy weather that 'virtually tore the vessel apart' - the aft depth charge racks were swept off the deck and flooding ruined provisions below. After repairs at Kodiak she was sent to the Aleutian chain during the period of the Japanese occupation of Kiska and Attu, where PC-600 and 'an aged destroyer' worked patrol duty; in the dark of night the two ships collided and 'the bow was ripped off the small PC boat,' which was routed to Kodiak to rebuild its bow. Tacket was then reassigned (ultimately to USS Heermann, DD-532).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1943 (events narrated)
- Population
- PC-600 wartime crew, incl. radioman Henry A. Tacket (1942-43)
- Limitations
- Eyewitness recollection recorded decades later: ship-specific and first-person, but a single unsworn narrative with compressed chronology - Tacket frames the Aleutian period as 'during the Midway Battle when the Japanese attacked Kiska and Attu' (June 1942), while PC-600 did not commission until 18 August 1942; her Aleutian patrols necessarily fell during the subsequent occupation period (late 1942-43, consistent with his reassignment to DD-532's 1943 fitting-out). The colliding destroyer is unnamed ('an aged destroyer'); no casualty report, deck log, or yard record for the collision or bow rebuild was located. Not an exposure or materials record.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-600-pc600-02
-
[4]Naval Historical Center Online Library of Selected Images, photo 80-G-438383 caption, 'Transfer of ships to the Republic of Korea Navy' (verbatim NHHC transcription via HyperWar); also hosted at /hyperwar/OnlineLibrary/photos/events/kowar/homefrt/hmf51.htm [other_primary]
- Locator
- HyperWar NHHC Online Library transcription, kowar/un-rok/rok-nav2.htm, photo block 80-G-438383
- Finding type
- historical_record
- Finding
- Official U.S. Navy Photograph (80-G series, National Archives collections) documents this hull's transfer ceremony: 'Four U.S. Navy ships at Astoria, Oregon, during their transfer to the ROK Navy. In the foreground are USS LSSL-77, which became the Korean Yung Huang Man (LSSL-107), and USS LSSL-91, which became the Korean Kang Hwa Man (LSSL-108). Behind them are USS PC-485, which became the Korean Han La San (PC-705), and USS PC-600, which became the Korean Myo Hyang San (PC-706). Note snow on the ships. Photograph is dated 24 January 1952.' Companion captions on the same page document that 27 officers and 147 enlisted men of the ROK Navy were sent to the U.S. aboard USNS Marine Phoenix (T-AP-195) to crew the four transferred ships (photos 80-G-438378/80-G-438390, dated 18 January 1952).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1952-01
- Population
- USN transfer crews; ROK Navy manning detachment (27 officers, 147 enlisted)
- Limitations
- Primary photographic record of the transfer at Astoria, Oregon. The photo date 24 January 1952 post-dates NavSource's 21 January 1952 transfer date by three days - likely ceremony vs. effective-date distinction; carried in gaps. Documents the handover event only; says nothing about hull condition, materials, or asbestos. The live NHHC site mirrors this caption in its own Online Library but the transcription URL cited is the verified-live copy.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-600-pc600-03
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[5]Era inference built on: NavSource PC-600 spec block (twin Fairbanks Morse diesels, steel 173-ft PC-461 class) + NavSource Submarine Chaser index class summary (steel-hulled twin-diesel 173-foot type) + GAO HRD-80-2 Navy asbestos-era documentation (ev-05) [other_primary]
- Locator
- NavSource 12/010600.htm spec block; NavSource 12/01idx.htm PC-461 class description; GAO HRD-80-2 (see ev-05)
- Finding type
- asbestos_application
- Finding
- A steel-hulled PC-461-class patrol craft built 1942 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a small diesel combatant of this type and period were thermal insulation in machinery spaces, diesel-engine and exhaust lagging, gaskets, valve packing, electrical insulation, and fireproofing. As a diesel-driven craft she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply, but the confined-space exposure dynamic of a 173-foot hull applies: her complement of ~65 worked and berthed in a compact steel envelope around diesel machinery.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1968
- Population
- Consolidated Shipbuilding construction trades (1942); crew (1942-47); yard trades at documented availabilities (Puget Sound 1944 presence; Mare Island overhaul Jan 1946); reserve-fleet and transfer crews; ROK Navy (1952-68)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, builder's spec, or work package located for PC-600. Names era-standard applications, not confirmed installed materials. No quantity, no manufacturer attribution for this hull. The diesel plant means asbestos relevance concentrates in machinery/exhaust insulation, gaskets/packing, and electrical systems rather than steam-side lagging.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-600-pc600-04
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[6]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 (1942) and USN service era (1942-47), and postdating even her South Korean service (1952-68) and scrapping (1968).
- 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, confirmed 2026-10-03) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-600-pc600-05
-
[7]Batch-7975 search ledger (this record): NavSource PC-600 page; National WWII Museum oral history; NHHC Online Library photo caption 80-G-438383; HyperWar ship stub; uboat.net warship record; shipbuildinghistory.com construction table; GAO product page; CourtListener (see ledger outcome); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-pc-600-pc600-01 through -09
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or litigation naming USS PC-600 (or ROKS Myo Hyang San, PC-706) was found in the public sources searched (see search_ledger). CourtListener was fully searched this session: all four required base queries completed after patient retry through the saturated fleet pacing bucket - "USS PC-600" returned zero opinion and zero docket hits; "PC-600" returned 14 opinion hits that are all name collisions (Indiana post-conviction docket numbers, probate and civil cites, product/model fragments) and 1,439 docket hits on the same colliding token, whose authorized asbestos-qualified variant (69 hits) contained only number/model-fragment collisions including the MDL-875 master index token - no qualifying asbestos litigation naming this hull.
- 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 - her Korean-flag scrapping (1968) leaves no US-side museum, abatement, or hazmat record trail to find. Deck logs (NARA RG 24), Consolidated Shipbuilding build records, the Kodiak bow-rebuild and Mare Island/Puget Sound work packages, and any ROK Navy disposal records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-600-pc600-06