Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 881-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-1224-pc1224-pkt-881-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, PC-1224 (archive page 12/011224) [other_primary]
- Locator
- navsource.net/archives/12/011224.htm specification block, disposition line, and PCE(R)-856 photo caption
- Finding type
- vessel_history
- Finding
- NavSource record for this hull: 'Laid down 31 August 1943 by the Penn-Jersey Shipbuilding Co., Gloucester City, NJ'; 'Launched 9 July 1944'; 'Commissioned USS PC-1224, 8 January 1945', first commanding officer LTJG W. P. Foss, III, USNR. Specification block: displacement 450 tons; length 173'8"; beam 23'; draft 10'10"; speed 20.2 knots; complement 65; armament one 3"/50 dual-purpose gun, one 40mm gun, five 20mm guns, two rocket launchers, two depth-charge tracks; propulsion two 1,440bhp Hooven-Owen-Rentschler R-99DA diesel engines, Westinghouse single reduction gear, two shafts. A photo caption places the vessel towing PCE(R)-856 off Miami Beach, Florida, circa 1945. Disposition: 'Transferred to the War Shipping Administration in June 1948, sold to Mexico and reclassified GC-36'; 'Fate unknown.'
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1948
- Population
- Penn-Jersey Shipbuilding Co. construction trades (1943-44); USN crew (1945-1948)
- Limitations
- NavSource is a volunteer secondary compilation of official photographs and specification data, not a primary government registry; it conflicts with Uboat.net/Allied Warships on launch date (9 Jul 1944 here vs. 7 Sep 1944 there) and builder municipality (Gloucester City here vs. Camden there) - see ev-02 and gaps. Contains no asbestos or material-content information. No service-history narrative beyond the single 1945 photo caption was located.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1224-pc1224-01
-
[3]Uboat.net Allied Warships database, PC-1224 (U.S. Navy patrol craft of the PC-461 class) [other_primary]
- Locator
- uboat.net ship detail page 8751, construction and commands sections
- Finding type
- vessel_history
- Finding
- Uboat.net record for this hull: builder 'Penn-Jersey Shipbuilding Co. (Camden, New Jersey, U.S.A.)'; ordered 24 Mar 1942; laid down 31 Aug 1943 (agrees with NavSource); launched 7 Sep 1944; commissioned 8 Jan 1945 (agrees with NavSource); first commanding officer W P Foss, 3rd (USNR), assumed command 8 Jan 1945 (agrees with NavSource). The page states its commands section is 'still under development' and covers only WWII-era commanding officers; it contains no decommissioning, disposition, or Mexican-transfer information.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- Penn-Jersey Shipbuilding Co. construction trades (1943-44); USN crew (1945-)
- Limitations
- Independent naval-reference compilation, not a primary government registry. Corroborates laid-down date, commissioning date, and first CO identity, but conflicts with NavSource on launch date (7 Sep 1944 vs. 9 Jul 1944) and builder municipality (Camden vs. Gloucester City) - unresolved, carried in gaps. Contains no asbestos content and no disposition/fate information for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1224-pc1224-02
-
[4]Dictionary of American Naval Fighting Ships, master submarine-chaser (PC/SC/PCE) ship-index table (verbatim-transcription mirror of the NHHC DANFS index; ibiblio.org/HyperWar Foundation) [nhhc_danfs]
- Locator
- ibiblio.org/hyperwar/USN/ships/ships-sc.html table rows for PC-1210 through PC-1230 (PC-1218-1224 row has no hyperlink; PC-1217/PC-1225/PC-1226 rows do)
- Finding type
- historical_record
- Finding
- The DANFS master index lists the hull-number range 'PC-1218-1224' as a single unlinked table entry with no individual ship-history page, in direct contrast to immediately adjacent hulls PC-1217, PC-1225, and PC-1226, each of which is a hyperlinked entry with its own DANFS history. This confirms PC-1224 was never assigned a name (unlike many PC-461-class hulls that received names, typically under the Navy's 1956 Naval Reserve training-ship renaming program) and that no individual DANFS/NHHC ship-history narrative exists for this hull - DANFS entries exist only for named ships.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- n/a (index artifact)
- Limitations
- This is an index-table absence, not a full-text search of NHHC holdings - it is possible but not confirmed that NHHC holds unpublished hull-specific material outside the public DANFS series. The index establishes the negative (no DANFS narrative) but says nothing about asbestos, construction materials, or service history beyond what ev-01/ev-02 provide. Live history.navy.mil could not be reached directly this session (connection refused); this ibiblio/HyperWar mirror of the DANFS index was used instead and verified live (HTTP 200) at access time.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1224-pc1224-03
-
[5]Era inference built on: NavSource/Uboat.net specification blocks (diesel propulsion, steel hull, 1943-44 construction); general WWII-era small-combatant outfitting practice [other_primary]
- Locator
- NavSource/Uboat.net specification blocks (propulsion description)
- Finding type
- asbestos_application
- Finding
- A steel-hulled PC-461-class submarine chaser built 1943-44 and powered by two diesel engines (not a steam plant) sits inside the general WWII Navy construction era in which asbestos insulation, lagging, gaskets, and packing were standard outfitting materials. Era-typical applications for a diesel small combatant of this size and period would be diesel-exhaust lagging, engine and reduction-gear gaskets and packing, electrical cable insulation, and habitability-space thermal/acoustic insulation in the confined 173-foot hull - not boiler or turbine lagging, which has no application aboard a non-steam vessel.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1943-1948
- Population
- Penn-Jersey Shipbuilding Co. construction trades (1943-44); USN crew (1945-1948); Mexican Navy crew (1948-fate unknown)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or builder-yard industrial-hygiene study was located for this hull or for Penn-Jersey Shipbuilding Co. Does not establish installed materials, quantity, or present-day presence; does not establish ship-specific exposure. Builder is absent from the Atlas shipyards.json dataset - no yard-level asbestos documentation exists to attach to this finding (see gaps).
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1224-pc1224-04
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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 fleet-wide and did not begin substituting alternative insulation materials until the early 1970s - a Navy-wide policy backdrop that, by date range, would have applied to this hull's 1945-48 USN service had it still been in Navy hands, which it was not.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-03
- Study period
- 1979
- Population
- Navy shipyard workers generally; asbestos program review
- Limitations
- Program-level documentation with fieldwork at Long Beach and Norfolk Naval Shipyards - neither is this hull's builder (Penn-Jersey Shipbuilding Co., Gloucester City/Camden, NJ) or a yard with any documented connection to this hull. Included as Navy-wide policy context only, not as hull or builder-yard evidence. Full text not retrieved - gao.gov returns HTTP 403 to automated fetch (confirmed live-checked 2026-10-03); content via product-page description only.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1224-pc1224-05
-
[7]Search ledger (this record): CourtListener authenticated search attempted twice this session via the batch fleet helper (cl-auth-search.py); secondary web litigation sweep [court_record]
- Locator
- search_ledger rows sl-uss-pc-1224-pc1224-07 and -08
- Finding type
- litigation_documented
- Finding
- No qualifying asbestos litigation naming this hull was located. CAVEAT: CourtListener could not be authenticated-searched this session - the fleet helper reported the shared daily quota exhausted both times it was invoked (first check: ~2.2h to reset; recheck shortly after: ~2.1h to reset), so no opinion- or docket-type search for 'PC-1224' or 'USS PC-1224' was completed. This is logged as blocked, not as a negative result. Separately, a prior VERIFY pass for this ship (referenced in the batch task scope) found 'no exact/researched-designation match... at any tier.' General (non-authenticated) web search for 'PC-1224' combined with 'asbestos'/'mesothelioma'/'lawsuit'/'courtlistener'/'docket' surfaced no case naming this hull - only generic veteran-asbestos-litigation marketing content, which is excluded by source policy and not itself evidence of any case naming PC-1224.
- Verification
- unverified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Limitations
- Absence of a located record does not prove absence of a qualifying case - CourtListener's authenticated full-text search is a genuine open gap this session, not a completed negative result. Re-run 'PC-1224', 'USS PC-1224', and 'GC-36' (type=o and type=r) once the shared daily quota resets.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1224-pc1224-06