Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
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[1]research packet 865-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-1187-pc1187-pkt-865-packet-md
-
[2]NARA, RG 24 (Records of the Bureau of Naval Personnel), 'Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities, 01/01/1939-01/01/1949', file unit for USS PC-1187, coverage 7/18/44-1/7/46, 149 digitized images, NAID 192294121 [other_primary]
- Locator
- NAID 192294121; first content page (18 July 1944 Report of Changes); final pages before end-of-reel marker (Report of Changes UPON DECOMMISSIONING, 7 JAN 1946)
- Finding type
- vessel_history
- Finding
- The digitized muster-roll file spans this hull's entire commissioned life, 18 July 1944 through 7 January 1946. The opening Report of Changes shows the commissioning crew received from Receiving Station Jacksonville, FL, on 18 July 1944 - the plankowner crew assembled at the builder's city. The final sheet is a Report of Changes of U.S.S. PC-1187 'UPON DECOMMISSIONING' dated 7 January 1946, transferring the last officers to Staff, Columbia River Group, 19th Fleet (Lt.(jg) Wallace B. Shiver, Jr.); to treatment at USNH Astoria (Ens. Richard J. Ertel); to USS Agenor (ARL-3) for temporary duty (Ens. Frederick J. Hart); and to Commander 13th Naval District (Ens. Charles W. Zylinsky), under Tongue Point Group and Columbia River Group 19th Fleet authorities of 13 and 28 December 1945.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-1946
- Population
- PC-1187 crew, 18 July 1944 - 7 January 1946
- Limitations
- Personnel-administration record: establishes commissioning and decommissioning dates and final officer dispositions, not operations or material content. Individual enlisted crew rosters were not transcribed; the file is the authoritative crew-membership source but no exposure data. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-01
-
[3]NavSource Online: Patrol Craft / Submarine Chaser / Escort Photo Archive, PC-1187 - construction timeline, specifications, disposal (live navsource.net page verified 2026-10-03) [other_primary]
- Locator
- NavSource 12/011187.htm header block and specifications block
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 18 June 1943 at Gibbs Gas Engine Co., Jacksonville, FL; launched 26 November 1943; commissioned USS PC-1187, 18 July 1944; transferred to the War Shipping Administration 1 July 1948, sold and named Aleutian Packer; scrapped in 1960. Specifications: displacement 450 t.; length 173' 8"; beam 23'; draft 10' 10"; speed 20.2 kts.; complement 65; armament one 3"/50 dual purpose gun, one 40mm gun, five 20mm guns, two rocket launchers, two depth charge tracks; propulsion two 1,440 bhp Hooven-Owen-Rentschler R-99DA diesel engines, Westinghouse single-reduction gear, two shafts. Page states verbatim: 'There is no DANFS history currently available for PC-1187.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1960
- Population
- Gibbs construction trades (1943-44); crew (1944-46); merchant crews as Aleutian Packer (1948-60); shipbreakers (1960)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates corroborated by NARA muster-roll coverage (ev-01) where they overlap. 'Transferred to the War Shipping Administration 1 July 1948' is attributed verbatim; WSA was terminated in 1946 and the actual 1948 disposing agency was its Maritime Commission successor - the verbatim statement is retained with this caveat. 450 t. is the full-load figure consistent with class spec blocks. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-02
-
[4]NARA, RG 38 WWII war diaries: Commander Eastern Sea Frontier / COM NY GR ESF operational diaries, 1944-1945 (multiple file units; April 1945 diary NAID 140005690 shown) - ship-tagged task-group assignments, convoy escorts, and the 3 April 1945 Buoy F attack [other_primary]
- Locator
- NAID 140005690 (April 1945, Serial #1159 entry of 3 April 1945; 30 April 1945 vessel-breakdown table listing PC-1187); companion COM NY GR ESF / COMEASTSEAFRON diary file units September 1944 - April 1945
- Finding type
- vessel_history
- Finding
- Eastern Sea Frontier war diaries place PC-1187 in Task Group 02.9 based at Tompkinsville, Staten Island (home yard New York; engine type 'HOR' = Hooven-Owen-Rentschler per the breakdown tables) on convoy-escort and harbor-approach patrol duty through late 1944 and into April 1945. Documented events: escort of convoys in the NK/KN (New York-Key West) series; on 3 April 1945 (Serial #1159) 'PC 1217 and PC 1187 patrolling approaches to New York ordered to scene and attacked with ahead thrown weapons' after blimp K-122 reported a MAD contact ~250 yards north of Buoy F in the New York swept channel - contact at approximately 40-17N 73-48W, evaluated 'Doubtful,' with the wreck of Ioannis P. Goulandris ~1,500 yards south; and in October 1944 the British freighter CAPE GASPE rammed the plotted position of a contact PC-1187 had been working (approximately 40-06N 73-28W), the contact likewise evaluated doubtful.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-09 through 1945-04
- Population
- PC-1187 crew on New York approaches / North Atlantic coastal convoy duty
- Limitations
- Establishes operating area and escort/patrol mission, not material content. The attacked contacts were evaluated 'Doubtful' - not confirmed submarines; the Buoy F position lay near a charted wreck. The CAPE GASPE entry was extracted before the catalog extractedText endpoint stopped returning that file unit's OCR; day-level date not re-verified this session. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-03
-
[5]NARA, RG 38 WWII war diaries and shore-command diaries: NAF Great Exuma (July 1944), NOB Key West (September-December 1944), NOB Guantanamo Bay (December 1944, January 1945, April 1945), and COTCLant/Atlantic Fleet training records (May 1945) - shakedown, Caribbean training, and TAG/GAT convoy escort [other_primary]
- Locator
- NARA digitized war-diary OCR (extractedText): NAF Great Exuma Jul-Aug 1944; NOB Key West Sep-Dec 1944 (Floating Drydock No. 4 entry Nov 1944); NOB Guantanamo Bay Dec 1944 / Jan 1945 / Apr 1945; COTCLant refresher table 18-22 May 1945
- Finding type
- vessel_history
- Finding
- Caribbean and Florida command diaries trace the first commissioned year: post-commissioning shakedown in the NAF Great Exuma operating area in July-August 1944; operations and availability at NOB Key West including drydocking in Floating Drydock No. 4 in November 1944; NOB Guantanamo Bay records in December 1944 and January-April 1945 documenting PC-1187 escorting Guantanamo-bound shipping in the TAG/GAT convoy series; and a Commander, Operational Training Command, Atlantic Fleet (COTCLant) refresher-training table recording PC-1187 for refresher training 18-22 May 1945 with 12 officers and 131 men.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-07 through 1945-05
- Population
- PC-1187 crew; Key West drydock/yard trades (November 1944 availability); Gitmo base personnel during availabilities
- Limitations
- Establishes shakedown and Caribbean escort assignment plus a wartime embarked complement snapshot (12 officers / 131 men, May 1945 - above the 65 spec-block figure, consistent with wartime training complements). The November 1944 drydocking documents yard work on this hull but names no materials. No asbestos content. Diary mentions were extracted from NARA digitized OCR; individual catalog URLs for each shore-diary file unit not enumerated here.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-04
-
[6]NARA, RG 38 WWII war diaries: CINCLANT and COMGULFSEAFRON (July 1945), COM 15 / 15th Naval District (July 1945), COM 11 / San Diego (August 1945), COM 14 / Pearl Harbor (September 1945), ComServPac (September 1945), COM 13 / 13th Naval District and 19th Fleet Columbia River Group (November 1945), COM 13 monthly progress report (March 1946) - transit to the Pacific and inactivation [other_primary]
- Locator
- NARA digitized war-diary OCR (extractedText): CINCLANT Jul 1945; COMGULFSEAFRON Jul 1945 (KG-788/NG-793); COM 15 Jul 1945; COM 11 Aug 1945; COM 14 Sep 1945; ComServPac Sep 1945; COM 13 Nov 1945 and Mar 1946 progress report; 19th Fleet Columbia River Group diary Nov 1945
- Finding type
- vessel_history
- Finding
- Mid-1945 command diaries track PC-1187 from the Atlantic to lay-up: departed Tompkinsville for Guantanamo 5 July 1945, arriving 13 July (CINCLANT); Gulf Sea Frontier records show KG-788 arrival and NG-793 departure toward Charleston within the same window (routing entries); COM 15 lists PC-1187 among 15th Naval District craft at Coco Solo in July 1945 on Panama escort duty; COM 11 records August 1945 voyage repairs at San Diego including modification of the ventilation system; COM 14 records September 1945 port movements at Pearl Harbor with refrigeration repairs aboard PC-1187; ComServPac September 1945 vessel lists carry the hull; COM 13 November 1945 records PC-1187 arriving Tongue Point from Portland on 8 November 1945 after a preinactivation overhaul, assigned to the Tongue Point Group, with an overhaul of the reverse-turn controller logged; and the COM 13 March 1946 progress report indexes PC-1187 among vessels decommissioned or placed out of service.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-07 through 1946-01
- Population
- PC-1187 crew; San Diego repair trades (Aug 1945); Pearl Harbor trades (Sep 1945); Portland preinactivation yard trades (Oct-Nov 1945); Tongue Point inactivation crews (Nov 1945-Jan 1946)
- Limitations
- The transit sequence is reconstructed from multiple command diaries with one unresolved conflict (see ev-06). Repair entries document work performed on this hull but name no materials - 'modification of the ventilation system' and 'refrigeration repairs' are work descriptions, not asbestos records. The bull-gear/pinion entry on the same August repair pages was attributed to a sister hull and is excluded. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-05
-
[7]NARA, RG 38 war diary of USS LST-847 (May 1945) - task-group formation listing PC-1187 [other_primary]
- Locator
- LST-847 war diary, 20 May 1945 entry (TG 13.12.6 formation list) vs COTCLant refresher table 18-22 May 1945
- Finding type
- historical_record
- Finding
- UNRESOLVED CONFLICT: the USS LST-847 war diary lists PC-1187 in the Task Group 13.12.6 formation off/near Pearl Harbor on 20 May 1945 - the same week the Atlantic Fleet COTCLant diary records PC-1187 in refresher training at Guantanamo (18-22 May 1945, ev-04). The two primary records cannot both describe the hull's location; one likely misidentifies the hull (sister PCs were present in both theaters) or the LST-847 entry reflects an earlier planned assignment.
- Verification
- disputed
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-05
- Limitations
- Disputed single-source entry in tension with a contemporaneous Atlantic Fleet record; carried as an unresolved archival conflict, not adopted into the service narrative. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-06
-
[8]Era inference built on: NavSource spec block for this hull (two 1,440 bhp Hooven-Owen-Rentschler R-99DA diesels, two shafts); PC-461-class construction era (steel-hulled 173-ft diesel patrol craft, 1943-44); GAO HRD-80-2 Navy-wide asbestos-application list (ev-08); NARA-documented aboard-hull work events (ev-05) [other_primary]
- Locator
- NavSource 12/011187.htm spec block; GAO HRD-80-2 (ev-08); NARA repair entries (ev-05)
- Finding type
- asbestos_application
- Finding
- A 1943-44-built Navy patrol craft sits inside the documented Navy asbestos-use era; era-standard applications aboard a diesel combatant of this type were engine-exhaust and machinery lagging, machinery-space thermal and acoustic insulation, gaskets and valve packing throughout saltwater/fuel/exhaust systems, electrical cable insulation, and interior deck tile/finishes. As a diesel vessel PC-1187 carried no boilers or main steam plant - the dominant boiler and steam-line lagging pathway of steam combatants does not apply to this hull. Documented aboard-hull work (ventilation-system modification, refrigeration repairs, preinactivation overhaul, drydocking) represents the kind of repair activity that disturbs installed material, though no record names asbestos for this hull.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1943-1960
- Population
- Gibbs construction trades (1943-44); PC-1187 crew (1944-46); repair/yard trades at Key West, San Diego, Pearl Harbor, Portland, Tongue Point (1944-46); merchant crews (1948-60); shipbreakers (1960)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located. Names era-standard applications, not confirmed installed products. No quantity, no manufacturer attribution, no present-day presence claim. Does not establish individual exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-07
-
[9]GAO, 'Navy's Efforts to Protect Workers From Asbestos Exposure,' HRD-80-2 (Oct 18, 1979) - Navy-wide asbestos use and controls review (full text retrieved via Firecrawl; direct fetch returns HTTP 403) [gao]
- Locator
- GAO HRD-80-2, asbestos-applications and program-timeline passages
- Finding type
- gov_survey
- Finding
- GAO documented that thermal insulation was the major shipboard asbestos application in Navy ships and that asbestos was also used aboard ship in gaskets, packing, electric cable, deck tile, galley ranges, brakes, and clutches; the Navy did not begin substituting alternative insulation materials until the early 1970s - spanning this hull's entire construction (1943-44) and naval service (1944-46) era.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (covering construction-era practices back to WWII)
- Population
- Navy shipyard workers and shipboard personnel, Navy-wide
- Limitations
- Program-level documentation; supports era context only, not any fact specific to PC-1187. Report addresses Navy shipyard worker protection; it does not enumerate hulls. Does not establish materials aboard this hull, individual exposure, quantity, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-08
-
[10]Batch-7684 search ledger (this record): NavSource; NHHC DANFS (404); NARA catalog full-text (muster rolls, ~20 war-diary file units, Special Lists 43-44 deck-log index, INSURV file, BuShips drawings); shipbuildinghistory.com; USNI photo archive; uboat.net; GAO HRD-80-2; NIOSH HHE/OSHA yard-level sweep; CourtListener (blocked) [other_primary]
- Locator
- search_ledger rows sl-uss-pc-1187-01 through -13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, insulation inventory, or verified litigation naming USS PC-1187 was found in the public sources searched. CAVEAT: CourtListener could not be queried to completion - the authenticated helper reported the shared daily quota exhausted (~3 h to reset) and instructed not to retry; logged as blocked in search_ledger, not as a negative result. A yard-level sweep (NIOSH HHE, OSHA/OSHRC decisions, Jacksonville-area shipyard litigation) surfaced silicosis and safety matters for the Gibbs/Jacksonville site but no asbestos-specific record tied to this hull. The only 'asbestos aboard' material on the open web is law-firm marketing listicle content asserting asbestos without 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. The litigation-repository search is a genuine open gap (quota-blocked, not run). INSURV material-inspection reports and Bureau of Ships drawings for this hull exist at NARA but are undigitized (ev-10). Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-09
-
[11]NARA archival leads for this hull: RG 38 INSURV material-inspection reports for PC-1187 (NAID 2759421, not yet available online); RG 19 Bureau of Ships engineering drawings for PC-1187 (NAID 175665824, microfilm, not digitized); deck-log index entry in NARA Special Lists 43-44 listing two PC-1187 logbooks covering 18 July 1944 - 30 June 1945; USNI photo archive image 9007046 (live) [other_primary]
- Locator
- NAID 2759421 (INSURV reports); NAID 175665824 (BuShips drawings); NARA Special Lists 43-44 index line 'PC-1187 July 18, 1944 - June 30, 1945' (2 logbooks); https://photos.usni.org/content/9007046jpg
- Finding type
- historical_record
- Finding
- Ship-specific records held but not digitized: Board of Inspection and Survey material-inspection reports would document the hull's material condition at acceptance and subsequent inspections; Bureau of Ships microfilmed engineering drawings would show installed systems; two deck logs (18 Jul 1944 - 30 Jun 1945 per the published Special Lists 43-44 index) would give day-level movements; a U.S. Naval Institute photograph of PC-1187 exists at photos.usni.org. These are the strongest remaining leads for hull-specific material detail.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-1946 (record coverage)
- Limitations
- Archival leads only - undigitized or image-only records whose contents were not reviewed; existence of the records is documented, their content is not. Special Lists 43-44 catalog URL not re-located this session (cited from the published finding-aid text extracted earlier). No asbestos content established.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-1187-10