Evidence
14 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-14).
-
[1]research packet 930-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: PHANTOM
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-727-pc727-pkt-930-packet-md
-
[2]DANFS, 'SC-701 - SC-800' compilation - SC-727 entry (live NHHC page, verified 2026-10-03) [nhhc_danfs]
- Locator
- DANFS SC-701 - SC-800 page, SC-727 paragraph
- Finding type
- vessel_history
- Finding
- DANFS records for this hull, verbatim: 'Built at Harbor Boat Building Co., Terminal Island, Calif. Keel laid 5/7/42. Launched 9/7/42. Commissioned 2/9/43. Changed from SC-727 to SCC-727 on 8/20/45. Transferred to Foreign Liquidation Commission 5/47.' The entry is a one-line milestone record with no service narrative - it does not carry the PC-727 commissioning designation, the April 1943 reclassification, the striking date, or the Typhoon Louise grounding.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1947
- Population
- Harbor Boat yard construction trades (1942-43); crew (1943-45)
- Limitations
- Ship-specific milestones only; no asbestos or material content, no spec block, no service narrative. NavSource's page note 'There is no DANFS history available for SCC-727' refers to the absence of a full narrative entry - this one-line compilation entry does exist and was verified live 2026-10-03.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-01
-
[3]NavSource Online: Submarine Chaser Photo Archive, SCC-727 ex-SC-727 ex-PC-727 (page verified live 2026-10-03) [other_primary]
- Locator
- NavSource 12/150727.htm header block, specifications block, photo-caption table, CO roster
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 7 May 1942 by the Harbor Boat Building Co., Terminal Island, CA; launched 7 September 1942; commissioned PC-727 on 9 February 1943; reclassified SC-727 in April 1943; reclassified as a Control Submarine Chaser, SCC-727, on 20 August 1945; struck from the Naval Register 19 December 1945; transferred to the State Department, Foreign Liquidation Commission in May 1947; 'Fate unknown.' Specifications: 148 t.; 110'10" x 17' x 6'6"; 15.6 kts.; complement 28; armament one 40mm mount, two .50 cal. machine guns, two depth charge projector 'Y Guns,' two depth charge tracks; propulsion two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Call sign NXHD (Nan-Xray-How-Dog). Photo captions place this hull at Buckner Bay, Okinawa - two National Archives photos (one dated 10 October 1945), a crew-submitted 10 October 1945 photo, and a c. November 1945 photo showing 'LCI(FF)-399, SCC-727 and an unidentified APL, aground in Buckner Bay, Okinawa.' Commanding-officer roster lists ENS W. J. Nickels, USNR (1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1947
- Population
- Harbor Boat yard construction trades (1942-43); crew (1943-45)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates track DANFS where DANFS covers them, and the commissioning designation (PC-727), April 1943 reclassification month, striking date, call sign, spec block, and CO roster come from this source alone among those searched. 'Fate unknown' stands - no post-FLC record located. Its 'no DANFS history' note is stale - the one-line DANFS entry exists (ev-01). The November 1945 grounding photo is consistent with but does not itself document the Typhoon Louise causation - that is established by the NHHC vessel list (ev-03). Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-02
-
[4]Naval Historical Center (NHHC predecessor), 'Typhoons and Hurricanes: Pacific Typhoon at Okinawa, October 1945' FAQ page incl. vessel disposition list - ARCHIVED copy (Wayback capture 2014-12-16; live history.navy.mil equivalent returned 404 this session) [nhhc_danfs]
- Locator
- NHHC FAQ faq102-6.htm, 'for listing of vessels' disposition table, SC-block row 'SC 727'; storm narrative paragraphs (Wayback 2014-12-16)
- Finding type
- historical_record
- Finding
- The NHHC typhoon vessel list records this hull by name: 'SC 727 - Grounded - Beyond economical repair' in the 9 October 1945 storm (Typhoon Louise) at Buckner Bay, Okinawa. The page documents the event: winds of 80 knots (92 mph) and 30-35 foot waves battered the bay; a total of 12 ships and craft were sunk, 222 grounded, and 32 severely damaged; personnel casualties were 36 killed, 47 missing, and 100 seriously injured. NavSource photo captions independently show this hull aground at Buckner Bay c. November 1945 alongside LCI(FF)-399 and an unidentified APL.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-10-09
- Population
- Crew aboard, Buckner Bay anchorage (Oct 1945); salvage/disposal workforce (1945-47)
- Limitations
- Ship-specific event documentation from an official Navy source: establishes the grounding and the beyond-economical-repair assessment, which is consistent with (but does not by itself state as causation for) the December 1945 striking and the FLC hulk disposal. The list gives no per-hull grounding date beyond the storm date (9 October 1945), no casualty or damage detail for this hull, and no post-grounding disposition. No asbestos content. Live page 404 this session - cited via Wayback Machine capture and labeled archived.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-03
-
[5]NavSource Online: 110' Submarine Chaser photo index - class introduction and SC-497-class roster (verified live 2026-10-03) [other_primary]
- Locator
- NavSource 12/01idx.htm class introduction paragraph and SC-497-class roster rows
- Finding type
- vessel_history
- Finding
- CORRECTION / designation-chain support: the class index explains the PC-727 -> SC-727 reclassification as class-wide, not hull-unique - 'World War II expansion programs led to construction of two large groups of subchasers, the new 110-foot wooden-hulled craft and the 173-foot steel-hulled type. By 1943, it was felt desirable to differentiate between the two types. The type symbol PC was retained for the steel 173-footers, and the separate symbol SC was adopted for the 110-foot vessels. These now dropped the dual "S.C.-PC" identification, and were simply identified as "USS SC-."' It further notes 'some SCs and PCs were later modified for amphibious control work and redesignated SC(C) and PC(C), retaining the same numbers' - the mechanism behind this hull's SCC-727 reclassification. The roster lists 'SC / SCC-727 ex-PC-727' alongside the same ex-PC pattern for every early class boat. This hull was therefore never a PC-461-class steel patrol craft: PC-727 was the shared-series number carried by a wooden 110' boat until the April 1943 re-symboling.
- Verification
- verified
- Role
- correction
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Limitations
- Corrects the batch-scope risk of reading 'PC-727' as a PC-461-class vessel - designation-history facts, not material claims. The 1943 dual-to-SC re-symboling and the SC(C) control-craft modification note are stated at class level; this hull's specific dates (April 1943 reclass; 20 August 1945 SCC reclass) rest on the vessel page and DANFS (ev-01, ev-02). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-04
-
[6]National Archives, Special List 44 by Ship Number - Navy deck-log holdings (RG 24), official PDF (downloaded and verified 2026-10-03) [other_primary]
- Locator
- sl-44-ship-number.pdf, SC-block rows: 'SC-727 | 2/9/1943 | 11/28/1945'
- Finding type
- historical_record
- Finding
- NARA's Special List 44 records deck logs held for SC-727 covering 2/9/1943 - 11/28/1945 - a single contiguous block spanning her entire commissioned service from the commissioning date (9 February 1943) to three weeks before her striking (19 December 1945). The logs are the surviving primary record of her daily operations, including the Marianas service period and the Buckner Bay grounding aftermath.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-02-09 to 1945-11-28
- Population
- Crew (1943-45)
- Limitations
- Confirms log holdings exist and gives coverage dates - the logs themselves are not digitized and were not read; no claim is made about their contents. The 28 November 1945 end date is a records-coverage date, not a documented decommissioning date - no decommissioning entry is asserted from it. The NARA catalog (JS-rendered) could not be queried for the RG 24 file units this session (see search ledger).
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-05
-
[7]Shipbuilding History (Tim Colton), Harbor Boat Building yard construction table, Terminal Island CA; corroborated by the site's WWII sub-chaser production table at shipbuildinghistory.com/smallships/pc2.htm (both verified live 2026-10-03) [other_primary]
- Locator
- Harbor yard table, SC 727 row; smallships/pc2.htm SC 727 row; yard-history header
- Finding type
- vessel_history
- Finding
- The builder's-yard table records for this hull: 'SC 727 | US Navy | Sub Chaser | 95d | 110 | 9-Feb-43 | Transferred foreign 1947' - corroborating the 9 February 1943 delivery/commissioning date and the 1947 foreign disposal. The companion production table lists 'SC | 727 | Harbor BB | Terminal Island CA | 148 | 110 | 9-Feb-43 | To FLC 1947.' The yard page documents Harbor Boat Building Company as founded by Romolo Rados in 1919 on Terminal Island, San Pedro; renamed Harco after WWII; sold to LTV in 1959, to Omega-Alpha Inc. in 1971, and closed in the 1970s.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1947
- Population
- Harbor Boat yard construction trades (1942-43)
- Limitations
- Shipbuildinghistory is a long-running secondary reference compilation (yard records and delivery tables), not an official registry - 'Transferred foreign 1947' and 'To FLC 1947' are consistent with the Foreign Liquidation Commission disposal in DANFS and NavSource. Tonnage variance between the two tables (95d design vs 148) is a load-condition difference, not a conflict. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-06
-
[8]uboat.net Allied Warships, USS SC-727 (SC-727) vessel entry (verified live 2026-10-03) [other_primary]
- Locator
- uboat.net ship/8944.html vessel fact table
- Finding type
- vessel_history
- Finding
- Secondary corroboration of milestones: submarine chaser of the SC-497 class; built by Harbor Boat Building Co. (Terminal Island, California); ordered 14 February 1942; laid down 7 May 1942; launched 7 September 1942; commissioned 9 February 1943. No commanders or events listed; end-service and history fields blank.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1943
- Limitations
- uboat.net is a secondary compilation - milestone dates agree with DANFS/NavSource; the 'Ordered 14 Feb 1942' date rests on this source alone and is carried in gaps, not asserted. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-07
-
[9]officialmilitaryribbons.com transcription of the CNO-approved WWII campaign-participation list (Navy and Marine Corps Awards Manual NAVPERS 15,790, Rev. 1953) - SC-727 block (page verified live 2026-10-03) [other_primary]
- Locator
- uss_sc_692_sc_1004 page, 'SC 727:' table block
- Finding type
- vessel_history
- Finding
- The transcribed campaign table credits SC-727 with two Asiatic-Pacific operations: '21 Jul 44 - 6 Aug 44 | P29-7 | Capture and occupation of Guam' and '7 Aug 44 - 10 Aug 44 | P29-2 | Capture and occupation of Saipan' - placing this hull in the Marianas operation areas in mid-1944, under her pre-SCC designation.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944
- Population
- Crew, Marianas operating area (Jul-Aug 1944)
- Limitations
- Commercial vendor site used only as a transcription of the official CNO/NAVPERS list - the underlying official document was not located online this session; carried at partial verification (same treatment as prior batches). Documents operation participation, not day-to-day activity; the Saipan dates (7-10 Aug) fall in the occupation phase after the 15 June landings. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-08
-
[10]Patrol Craft Sailors Association (PCSA), 'WWII SCs' class information page (verified live 2026-10-03) [other_primary]
- Locator
- ww2pcsa.org/subchaser.html, 'INFORMATION ON WWII SCs' spec block and conversions section
- Finding type
- historical_record
- Finding
- Class-level reference describing the 110-foot wood-hull SC type: 438 delivered of 475 ordered ($500,000 each); lend-lease transfers (France 50, USSR 78, others); and the conversion programs including 'Beach Control Craft (SCC 70): SCC conversion replaced the forward 40mm with a 20mm cannon, added two 50-caliber machine guns, and additional radio equipment. Crews quarters were modified to accomodate extra personnel during beach landings.' Class specs given as 98 tons, 19 knots, 3 officers + 25 enlisted, original 3-inch/23 main battery - a class-general description, not this hull's fit.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Population
- Crews of SCC-converted boats (class context)
- Limitations
- Veteran-association class reference - establishes what the SCC conversion entailed (relevant to this hull's August 1945 reclassification) and class production totals, but its spec block differs from NavSource's vessel page (98 t./19 kts. vs 148 t./15.6 kts.; 3+25 vs 28 complement; early 3-inch gun vs later 40mm fit) - class-general vs this-hull values, variance noted in gaps. No hull-specific entry for SC-727 on the page. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-09
-
[11]uswarships.jounin.jp (Japanese-language US warship compilation), SCC roster - SCC-727 entry (verified live 2026-10-03) [other_primary]
- Locator
- uswarships.jounin.jp/scc.htm, SCC-727 roster row
- Finding type
- vessel_history
- Finding
- Secondary corroboration of the designation chain and the grounding: SCC-727 entry records Harbor Boat Building Co. builder, 1943/2/9 commissioning, '1945/8/20 艦種を指揮駆潜艇（SCC-727）に改める' (reclassified control subchaser SCC-727 on 20 August 1945), '1945/10/10 沖縄のBuckner Bayにて台風により座礁' (grounded by typhoon at Buckner Bay, Okinawa, 10 October 1945), and '1947/5 Foreign Liquidation Commissionに移管' (transferred to FLC May 1947).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1947
- Limitations
- Japanese secondary compilation - milestones converge with DANFS/NavSource; the grounding is corroborated but dated 10 October 1945, one day after the NHHC-documented storm date of 9 October - carried as a minor secondary-source variance (the NHHC list gives no per-hull grounding date beyond the storm; NavSource photos date her Buckner Bay presence 10 October). The page's attached service description ('Central and North Pacific... Philippines... Kerama Retto... Okinawa on April 1, 1945') is class-generic SCC-type text, not hull-verified - not asserted for this vessel. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-10
-
[12]Era inference built on: NARA-authored Unwritten Record blog (wooden 110' SC put into production for WWII); NavSource spec block (GM 8-268A diesels, no steam plant); PCSA class production data (438 delivered); GAO HRD-80-2 Navy asbestos-era documentation (ev-12) [other_primary]
- Locator
- NARA Unwritten Record 'Spotlight: Submarine Chasers' (26 Apr 2016); NavSource specifications block; shipyards.json (no Harbor Boat entry)
- Finding type
- asbestos_application
- Finding
- A wooden-hulled, diesel-powered 110' submarine chaser built 1942-43 sits inside the Navy's documented asbestos-use era but at the low end of its material intensity: no boilers, no steam lines, no turbine lagging - the dominant shipboard asbestos pathways do not exist on this hull type. Era-standard diesel-craft applications aboard a boat of this type and period were engine and exhaust lagging, machinery gaskets, valve packing, and electrical/wiring insulation in a small wooden hull volume.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1947
- Population
- Harbor Boat yard construction trades (1942-43); crew (1943-45); post-grounding salvage/disposal workforce (1945-47)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for SC-727/SCC-727. Names era-standard applications, not confirmed installed materials; no quantity. The wooden-hull type plausibly carried materially less asbestos than steel steam vessels of the same era - an inference about degree, not an exemption claim. No manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-11
-
[13]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) - product-page highlights via ARCHIVED copy (Wayback capture 2025-04-02; live gao.gov returns HTTP 403 to automated fetches) [gao]
- Locator
- GAO product page HRD-80-2 highlights block (Wayback 2025-04-02 capture; live 403; 26-page PDF not retrieved)
- Finding type
- gov_survey
- Finding
- GAO's review of Navy asbestos-exposure protection documented that asbestos insulation was in use in Navy ships, and that 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 - a policy modified in 1979 to selective replacement in high-maintenance areas. The program-level finding places asbestos insulation aboard Navy ships throughout this hull's U.S. service era (1943-45) and well after.
- 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. Content via archived product-page highlights - gao.gov returns HTTP 403 to automated fetches; the 26-page full-report PDF was not retrieved. Fieldwork shipyards were Long Beach and Norfolk - not this hull's builder.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-12
-
[14]Batch-8101 search ledger (this record): DANFS compilation; NavSource vessel + class index; NHHC typhoon FAQ (archived); NARA SL-44 PDF; Shipbuilding History yard + production tables; uboat.net; campaign-ribbon transcription; PCSA; jounin.jp; NARA blog; GAO product page (archived); HyperWar table; NVR check; NARA catalog; splinterfleet.org; Wikipedia; CourtListener (API v4); secondary web litigation/yard sweep [other_primary]
- Locator
- search_ledger rows sl-uss-pc-727-01 through -21
- 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-727 / SC-727 / SCC-727 was found in the public sources searched (see search_ledger). CourtListener 'SC-727' opinion search returned 8 results - all name collisions (state appellate reporter/statute strings containing 'S.C. 727'/'SC-727': Kentucky Supreme Court, Alabama, Georgia, Texas, and Mississippi decisions; none referencing the vessel or asbestos). CAVEAT: the 'SC-727' docket query and both 'PC-727' base queries stayed fleet-pacing-blocked through spaced retries across the session - logged 'blocked' in search_ledger, not as negative results. Secondary web sweeps surfaced no qualifying case; the only 'asbestos site' material is law-firm marketing content (a California asbestos-exposure site list naming Harbor Boat Building Company among listed sites, with no primary sourcing) - excluded by source policy.
- 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 - a 110' wooden diesel boat has few asbestos-relevant systems and generated few paper records; no survey would be expected for a hull this small lost to a 1945 typhoon and sold abroad by 1947. The litigation search is genuinely open on the docket side and on the 'PC-727' designation string (pacing-blocked, not run). RG 24 deck logs (1943-45), any BuShips damage/salvage reports on the October 1945 grounding, and FLC disposal records are undigitized/open leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-727-13