Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
-
[1]research packet 920-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: MISMATCH
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Evidence ID
- uss-sc-653-sc653-pkt-920-packet-md
-
[2]Naval History and Heritage Command, DANFS, SC-601 - SC-700 compilation, SC-653 entry [nhhc_danfs]
- Locator
- SC-601 - SC-700 page, SC-653 paragraph
- Finding type
- vessel_history
- Finding
- DANFS records SC-653 as built at Julius Peterson, Nyack, New York; keel laid 15 December 1941; launched 18 April 1942; commissioned 8 July 1942; and transferred to the Coast Guard on 30 October 1945.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Population
- Julius Peterson construction trades; Navy crew; Coast Guard crew
- Limitations
- Ship-specific construction and transfer milestones only. The short DANFS entry contains no asbestos information, no service narrative, and no Coast Guard disposition detail.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-653-sc653-01
-
[3]James T. Flynn Jr., U.S. Coast Guard Patrol Craft - Major Classes, Coast Guard-hosted PDF [other_primary]
- Locator
- Part 2, World War II Acquisitions of Misc. Patrol Craft, WAVR 421 row
- Finding type
- vessel_history
- Finding
- The Coast Guard patrol-craft table identifies WAVR-421 Air Falcon as ex-SC-653, entering Coast Guard service on 30 October 1945 and sold on 20 January 1948.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1948
- Population
- Coast Guard air-sea-rescue personnel; sale/disposal workforce
- Limitations
- A Coast Guard-hosted historical compilation, not a Navy commissioning record. It does not describe the sale buyer, later ownership, vessel condition, or asbestos materials.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-653-sc653-02
-
[4]National Archives, The Unwritten Record, 'Spotlight: Submarine Chasers' (26 April 2016) [other_primary]
- Locator
- NARA article text; 110-foot submarine chaser discussion and RG 19 drawing references
- Finding type
- historical_record
- Finding
- NARA describes the World War II 110-foot SC type as an improved wooden submarine chaser put into production for World War II and describes tight quarters for a class crew of two officers and 24 men; it points to RG 19 engineering drawings for the type.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Population
- SC-497-class construction trades and crews
- Limitations
- Class-level construction and crew context, not a record of SC-653's individual plans, complement, or materials. The cited NARA article does not mention asbestos.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-653-sc653-03
-
[5]U.S. Government Accountability Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979) [gao]
- Locator
- GAO product page highlights
- Finding type
- gov_survey
- Finding
- GAO reviewed Navy use of asbestos in ships and reported that the Navy's 1975 policy removed and replaced non-asbestos materials only when insulation was damaged or had to be removed for repairs; the policy was modified in 1979 to include selected 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 shipboard maintenance personnel
- Limitations
- Program-level Navy evidence, not hull-specific and not evidence that SC-653 contained asbestos. GAO fieldwork was at Long Beach and Norfolk Naval Shipyards, not Julius Peterson. It supports era context only.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-653-sc653-04
-
[6]GAO HRD-80-2 full report, shipboard applications table [gao]
- Locator
- Full report, Enclosure I and note on shipboard applications
- Finding type
- asbestos_application
- Finding
- GAO's shipboard-applications discussion identifies thermal insulation for machinery, equipment, and piping and notes continued asbestos use in some gaskets and pipe-hanger liners where substitutes had not been designated.
- Verification
- verified
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979
- Population
- Navy shipboard and shipyard workers
- Limitations
- The report describes Navy shipboard practice at program level and does not identify SC-653, its builder, its engines, or any installed product. It cannot establish asbestos aboard this hull or quantify material.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-653-sc653-05
-
[7]Class/era inference from NHHC DANFS ship type, NARA wooden 110-foot SC description, and GAO HRD-80-2 [other_primary]
- Locator
- Derived from the ship-specific DANFS identity plus NARA type description and GAO shipboard-application context
- Finding type
- asbestos_application
- Finding
- SC-653 was a wooden, diesel-powered 110-foot submarine chaser rather than a steam-powered vessel. Accordingly, possible era-standard applications are limited to small-craft machinery/exhaust insulation, gaskets, valve packing, electrical insulation, and similar components; boiler, turbine, and steam-line lagging pathways do not apply.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1948
- Population
- Construction trades and Navy/Coast Guard crews, 1941-1948
- Limitations
- Inference only. No SC-653 material list, asbestos survey, construction specification, abatement record, or primary engine-insulation record was located. These are possible applications, not confirmed products aboard this hull and not a quantity estimate.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-653-sc653-06
-
[8]Batch 8027 source and litigation sweep ledger [other_primary]
- Locator
- search_ledger sl-uss-sc-653-sc653-01 through -04
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record was located in the authoritative sources searched: no SC-653 asbestos survey, abatement contract, hazmat disclosure, or ship-specific asbestos litigation record was found. The public record located documents identity, construction, and Coast Guard transfer/disposal, not asbestos aboard the hull.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03 research session
- Limitations
- A negative finding is limited to the sources and searches completed; it does not prove absence of asbestos. CourtListener work was blocked by the fleet pacing limiter before a result was returned for the first base query; the other three required base queries were stood down and remain open gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-653-sc653-07