Evidence
9 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-9).
-
[1]research packet 934-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-749-pc749-pkt-934-packet-md
-
[2]NHHC/DANFS, SC-701 - SC-800 compilation, SC-749 entry (live page verified 2026-10-03) [nhhc_danfs]
- Locator
- SC-749 paragraph in the SC-701 - SC-800 compilation
- Finding type
- vessel_history
- Finding
- DANFS records this hull as built at Quincy Adams Yacht Yard Inc., Quincy, Massachusetts; keel laid 25 May 1942; launched 7 September 1942; commissioned 27 October 1942; and transferred to the Foreign Liquidation Commission on 30 April 1948.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Quincy Adams construction trades; U.S. Navy crew; postwar transfer personnel
- Limitations
- One-line DANFS compilation entry; it does not state the PC-749 commissioning designation, April 1943 reclassification, complement, propulsion, strike date, or subsequent fate. It contains no asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-749-pc749-01
-
[3]NavSource Online, Submarine Chaser Photo Archive, SC-749 hull page (live page verified 2026-10-03) [other_primary]
- Locator
- Header timeline and specifications block
- Finding type
- vessel_history
- Finding
- NavSource identifies SC-749 as ex-PC-749 and records: laid down 25 May 1942 at Quincy Adams Yacht Yard; launched 7 September 1942; commissioned PC-749 on 27 October 1942; reclassified SC-749 in April 1943; struck from the Naval Register 20 March 1946; transferred to the State Department, Foreign Liquidation Commission, 30 April 1948; fate unknown. Its specification block gives 95 tons displacement, 110'10" length, 17' beam, 6'6" draft, 15.6-knot speed, complement 28, and two General Motors 8-268A diesel engines on two shafts.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Quincy Adams construction trades; U.S. Navy crew (1942-1946); transfer/disposal personnel
- Limitations
- NavSource is a secondary compilation and photo archive, not the Navy register; the hull page supplies details absent from the one-line DANFS entry. It contains no asbestos content. The 95-ton displacement is carried as reported and is not reconciled here with differing class figures.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-749-pc749-02
-
[4]NavSource 110-foot submarine chaser index, SC-497 class roster and designation explanation (live page verified 2026-10-03) [other_primary]
- Locator
- SC-497 Class - Continued roster, SC-749 row; class introduction above the roster
- Finding type
- vessel_history
- Finding
- CORRECTION: the class index lists SC-749 ex-PC-749 in the SC-497-class 110-foot wooden submarine-chaser roster. Its class explanation distinguishes the 110-foot wooden SC boats from the 173-foot steel PC boats and explains the wartime transition from the shared S.C.-PC identification to the SC symbol. Therefore PC-749 is the earlier designation of this wooden SC-497-class hull, not a PC-461-class steel patrol craft.
- Verification
- verified
- Role
- correction
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1943
- Population
- SC-497-class boats and U.S. Navy designation system
- Limitations
- Class-level designation explanation plus the roster identity; it does not provide additional SC-749 service history or asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-749-pc749-03
-
[5]NARA, Special List #44, by Ship Numbers, Navy logbook finding aid (live PDF verified 2026-10-03) [other_primary]
- Locator
- Special List #44, by Ship Numbers, SC-749 row
- Finding type
- historical_record
- Finding
- NARA lists SC-749 with Navy logbook coverage beginning 27 October 1942 and ending 30 June 1945.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-10-27 to 1945-06-30
- Population
- Navy deck-log records for SC-749
- Limitations
- These are log-coverage dates, not inferred commissioning or decommissioning dates and not proof that the vessel was continuously in service on every intervening day. The underlying logs were not retrieved or reviewed. The PDF is an archival finding aid, not asbestos documentation.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-749-pc749-04
-
[6]U.S. GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979), product-page highlights verified 2026-10-03 [gao]
- Locator
- GAO product page Highlights section
- Finding type
- gov_survey
- Finding
- GAO reviewed asbestos use in Navy ships and reported that the Navy's 1975 policy removed and replaced non-asbestos material only when insulation was damaged or had to be removed for repairs; the policy was modified in 1979 for selective replacement in high-maintenance areas.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1975-1979
- Population
- Navy shipyard workers and Navy ship asbestos program
- Limitations
- Program-level review of Long Beach and Norfolk Naval Shipyards; it does not name SC-749, Quincy Adams Yacht Yard, or any specific material aboard this hull. It supports era context only and does not establish exposure, quantity, condition, or causation.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-749-pc749-05
-
[7]OSHA, Occupational Exposure to Asbestos, Federal Register notice (10 August 1994), historical shipbuilding discussion verified 2026-10-03 [other_primary]
- Locator
- Historical shipbuilding and repairing / asbestos-use discussion
- Finding type
- asbestos_application
- Finding
- OSHA's historical shipbuilding discussion states that asbestos products were used extensively on American ships from the early 1940s through the late 1970s, including joiner bulkhead systems, insulation for steam and hot-water pipes, boilers and tanks, ceiling tile, and fire-resistant bulkhead sheets; it identifies removal and repair work as exposure pathways.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- early 1940s-late 1970s
- Population
- American shipbuilding and ship-repair workers
- Limitations
- Historical industry-level context, not a finding about SC-749. The cited steam/boiler pathways do not apply to this hull's documented diesel propulsion, and the source does not establish that any listed product was installed aboard this vessel.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-749-pc749-06
-
[8]NAVSEA, S9086-BS-STM-010, Readiness and Care of Inactive Ships, section 050-7.2.7 (official Navy manual, live PDF verified 2026-10-03) [other_primary]
- Locator
- Section 050-7.2.7, Handling and Removal of Asbestos Materials
- Finding type
- asbestos_application
- Finding
- The Navy manual states that past naval shipbuilding programs used asbestos materials for shipboard installations such as thermal insulation and deck tile, and separately refers to asbestos in pipe covering, gaskets, and packing materials.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- historical naval shipbuilding programs; manual issued 2005
- Population
- Navy personnel handling inactive ships and shipboard materials
- Limitations
- General Navy hazardous-material handling guidance; it does not identify SC-749, its builder, or any installed material aboard this hull. It supports class/era context only and does not establish exposure or current condition.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-749-pc749-07
-
[9]Sources reviewed for this record: NHHC/DANFS, NavSource hull and class pages, NARA Special List #44, GAO HRD-80-2, OSHA historical shipbuilding discussion, and NAVSEA asbestos guidance [other_primary]
- Locator
- Research set and search_ledger rows sl-uss-pc-749-pc749-01 through -10
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement contract, hazmat disclosure, product inventory, or other primary material record for SC-749 / PC-749 was located in the authoritative sources reviewed. Asbestos documentation for this hull remains unknown; only class/era context is carried.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03 research sweep
- Limitations
- This is a bounded negative finding about records located, not proof that asbestos was absent. CourtListener litigation searches were not completed because the authenticated helper reported the fleet-wide pacing stand-down on the first attempted base query; litigation status therefore remains unresolved rather than negative. Quincy Adams yard records and underlying NARA logs were not retrieved.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-749-pc749-08