Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
-
[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-ipswich-pc1186-pkt-865-packet-md
-
[2]NavSource Online, Submarine Chaser Photo Archive, Ipswich (PC 1186), live page verified 2026-10-03 [other_primary]
- Locator
- Page header and timeline lines for PC-1186; specifications block
- Finding type
- vessel_history
- Finding
- The hull-specific NavSource entry states that PC-1186 was laid down 20 April 1943 at Gibbs Gas Engine Co., Jacksonville, Florida; launched 27 September 1943; commissioned USS PC-1186 on 9 June 1944; decommissioned 22 July 1946 at New York City and placed in service as a Naval Reserve training vessel in the 3rd Naval District; later laid up in the Atlantic Reserve Fleet, Boston Group; named Ipswich on 15 February 1956; struck from the Navy Register 1 April 1959; and sold for scrap to Hughes Brothers, Inc. The same entry gives 450-ton displacement, 173 ft 8 in length, 23-ft beam, 20.2-knot speed, complement 65, and two 1,440-bhp Hooven-Owen-Rentschler R-99DA diesels on two shafts.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-1959
- Population
- Gibbs Gas Engine construction trades; USN crew; Naval Reserve trainees, 1943-1959
- Limitations
- NavSource is a volunteer naval-history compilation rather than the Navy's primary register; it documents the hull and its specifications but contains no asbestos survey, material list, or exposure finding. The 1959 disposal date differs in kind from the NAVSEA inactive-ship table's 9 October 1959 removal date; both are carried without silently reconciling them.
- Atlas source
- true
- Evidence ID
- ev-uss-ipswich-pc1186-01
-
[3]NHHC biographical file, Joseph Francis Deegan Jr., official history.navy.mil page [nhhc_danfs]
- Locator
- Biographical narrative, paragraph beginning 'In June 1946 he joined Organized Surface Battalion 3-3'
- Finding type
- vessel_history
- Finding
- The NHHC biographical file states that Lieutenant Joseph Francis Deegan Jr. joined Organized Surface Battalion 3-3 at Perth Amboy, New Jersey, in June 1946 and served as Officer in Charge of USS PC-1186 until May 1947.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1946-1947
- Population
- Officer in Charge and Naval Reserve organization, 1946-1947
- Limitations
- This official personnel biography corroborates postwar PC-1186 service and a 1946-47 Naval Reserve context; it does not provide a complete crew figure, an engineering description, asbestos information, or an exposure finding. The page was indexed by the official site but returned a gateway error to the live fetcher at research time.
- Atlas source
- true
- Evidence ID
- ev-uss-ipswich-pc1186-02
-
[4]NAVSEA, Inactive Ships ship history table dated 28 June 2011, official Navy PDF [other_primary]
- Locator
- Inactive Ships table row 'Hull ID PC 1186 | Hull Name IPSWICH | Rmvl Date 9-Oct-59 | Final Disposition SCRAP SALE'
- Finding type
- vessel_history
- Finding
- The official NAVSEA inactive-ship table lists hull ID PC 1186, hull name IPSWICH, removal date 9 October 1959, and final disposition SCRAP SALE.
- Verification
- partial
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1959
- Population
- Navy inactive-ship/disposal administration
- Limitations
- The official PDF was discoverable and its indexed text identifies PC 1186, but direct automated retrieval returned HTTP 403; the row is therefore partial. The table gives a removal/disposal entry, not the exact sale date, scrap location, or asbestos condition. It is used to preserve the official date conflict with NavSource rather than to choose between them.
- Atlas source
- true
- Evidence ID
- ev-uss-ipswich-pc1186-03
-
[5]U.S. GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2, 18 October 1979 [gao]
- Locator
- GAO product-page highlights and HRD-80-2 report description
- Finding type
- gov_survey
- Finding
- GAO reviewed the Navy's use of asbestos in ships and asbestos controls at Long Beach and Norfolk Naval Shipyards. The report states that the Navy used asbestos in ship components and that thermal insulation was the major use aboard ships; it describes the Navy's 1975 policy of removing damaged or necessarily disturbed insulation and its 1979 modification for selected high-maintenance areas.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1975-1979; report published 1979
- Population
- Navy shipyard workers and Navy ship asbestos-management program
- Limitations
- Program-level Navy evidence only. GAO did not inspect or name PC-1186, did not establish what materials were installed aboard this hull, and did not establish exposure, remaining ACM, quantity, or legal eligibility. The report is context, not a ship-specific asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-ipswich-pc1186-04
-
[6]NavSource PC-461-class index and PC-1186 specification page, used only for class/propulsion context [other_primary]
- Locator
- PC-461 class index; PC-1186 specifications block; read with GAO HRD-80-2
- Finding type
- asbestos_application
- Finding
- Era/class context: PC-1186 was a small steel PC-461-class submarine chaser with twin diesel propulsion, built in 1943-44 during the period covered by GAO's Navy asbestos-use findings. Potential era-standard material applications for a diesel patrol craft include machinery or exhaust insulation, pipe insulation, gaskets, packing, electrical insulation, and deck covering; no one of these applications is confirmed aboard this hull.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1943-1959
- Population
- Construction trades and crew of a 1943-44 diesel patrol craft
- Limitations
- This is an inference from class, construction era, and propulsion, not a ship-specific finding. It does not prove asbestos content, location, quantity, condition, or exposure aboard Ipswich; no boiler/turbine system is claimed because the cited hull specification identifies diesel propulsion.
- Atlas source
- true
- Evidence ID
- ev-uss-ipswich-pc1186-05
-
[7]Batch-7683 source and litigation search ledger: NavSource, NHHC biographical file, NAVSEA inactive-ship table, GAO HRD-80-2, and CourtListener authenticated-helper status [other_primary]
- Locator
- Search ledger rows sl-uss-ipswich-pc1186-01 through -08; CourtListener helper stderr at 2026-10-03
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement record, hazmat disclosure, or qualifying asbestos litigation record naming USS Ipswich / PC-1186 was located in the sources reviewed. This is a negative finding about the research result, not proof that asbestos was absent. Exact-name and hull-number CourtListener searches were attempted through the authenticated helper, but the helper stopped with a daily-quota message directing a wait of approximately 11,141 seconds; CourtListener is therefore an open gap, not a no-result finding.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03 research sweep
- Limitations
- Public-record absence does not establish absence of asbestos, exposure, causation, or legal eligibility. Because CourtListener was blocked by the fleet quota, the litigation sweep is incomplete. Search results from law-firm marketing or unsupported listicles were not used as evidence.
- Atlas source
- true
- Evidence ID
- ev-uss-ipswich-pc1186-06