Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
-
[1]research packet 924-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-sc-684-sc684-pkt-924-packet-md
-
[2]Naval History and Heritage Command, DANFS, SC-601–SC-700, entry SC-684 [nhhc_danfs]
- Locator
- DANFS entry SC-684
- Finding type
- vessel_history
- Finding
- SC-684 was built at American Cruiser Co., Trenton, Michigan; keel laid 6 July 1942; launched 21 November 1942; commissioned 12 January 1943; and transferred to the Coast Guard 12 January 1946.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Navy shipyard workers and Navy crew, 1942-1946
- Limitations
- Ship-history milestones only; the DANFS entry does not characterize asbestos, hazardous materials, individual exposure, or abatement.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-684-sc684-01
-
[3]Naval History and Heritage Command, DANFS, SC-401–SC-500, SC-497-class characteristics [nhhc_danfs]
- Locator
- DANFS SC-497 Class Characteristics
- Finding type
- vessel_history
- Finding
- The SC-497 class was a wooden submarine-chaser class with 100-foot overall length, 17-foot beam, 6-foot-6-inch maximum draft, 148-ton full-load displacement, two diesel engines, and two screws; DANFS lists typical class accommodations as 3 officers and 25 enlisted.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- World War II construction and service era
- Population
- SC-497-class vessels and crews
- Limitations
- Class characteristics are not a survey of SC-684 and do not establish that any asbestos-containing product was installed aboard this hull. DANFS notes that armament and machinery varied among individual boats.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-684-sc684-02
-
[4]U.S. Coast Guard, Flynn, U.S. Coast Guard W Numbers (2014), WAVR-429 entry [other_primary]
- Locator
- WAVR 429 / Air Heron / ex. SC-684 row
- Finding type
- vessel_history
- Finding
- The Coast Guard list identifies WAVR-429 as Air Heron, ex-SC-684.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1946-1948
- Population
- Coast Guard personnel, 1946-1948
- Limitations
- The designation list establishes the post-Navy identity but does not describe asbestos, hazardous materials, service tasks, or exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-684-sc684-03
-
[5]U.S. Coast Guard, Flynn, U.S. Coast Guard Patrol Craft—Major Classes (2012), WAVR-429 entry [other_primary]
- Locator
- Part 2, WAVR 429 row
- Finding type
- vessel_history
- Finding
- The Coast Guard patrol-craft list records WAVR-429 Air Heron, ex-SC-684, transferred 12 January 1946 and sold 10 January 1948.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1946-1948
- Population
- Coast Guard personnel and later vessel custodians
- Limitations
- Disposition history only; the list does not establish asbestos materials, abatement, or exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-684-sc684-04
-
[6]U.S. Government Accountability Office, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (1979) [gao]
- Locator
- Highlights section
- Finding type
- gov_survey
- Finding
- GAO reviewed Navy ship asbestos use and the Navy policy for removing damaged asbestos insulation or insulation removed during repairs; this supports general Navy-era context for shipyard work, not a finding about SC-684.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1975-1979 policy and review period
- Population
- Navy shipyard workers and Navy vessels in the reviewed program
- Limitations
- Program-level review of Long Beach and Norfolk Naval Shipyards; SC-684 is not identified. It does not establish materials aboard this hull, exposure, dose, causation, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-684-sc684-05
-
[7]CourtListener authenticated helper sweep: exact-name opinion and docket searches for "USS SC-684"; hull-number opinion and docket searches for "SC-684"; four required base queries, limit 20 each [court_record]
- Locator
- Authenticated helper run on 2026-10-03; four base-query results
- Finding type
- historical_record
- Finding
- No qualifying asbestos-litigation hit naming this hull was located in the four required base searches. No asbestos-qualified variants were run because no base query overflowed its 20-result page.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03 search
- Population
- CourtListener opinions and RECAP dockets
- Limitations
- A search result is not proof that no litigation exists. The paced helper output visibly returned zero for the exact-name opinion query; the docket requests completed under the shared limiter without overflow, and no qualifying hit was identified. This is a search negative, not a merits finding and not proof of absence of exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-684-sc684-06
-
[8]Batch research review of official DANFS identity and Coast Guard disposition records [other_primary]
- Locator
- Official-source review and source gaps listed in search_ledger
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement contract, hazmat disclosure, material inventory, or official museum/yard asbestos record for SC-684 or WAVR-429 Air Heron was located.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948; records searched through 2026-10-03
- Population
- SC-684 Navy and Coast Guard service records
- Limitations
- The negative finding reflects the public authoritative sources reviewed and does not prove that asbestos was absent. The vessel was sold in 1948; later owner records, if any, were not located.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-684-sc684-07