Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
-
[1]DANFS, Burrfish (SS-312) - construction, six war patrols, radar-picket conversion (ibiblio HyperWar verbatim transcription) [nhhc_danfs]
- Locator
- DANFS service narrative and spec block
- Finding type
- vessel_history
- Finding
- Documented for this hull: laid down 24 February 1943 at Portsmouth Navy Yard; launched 18 June 1943; commissioned 14 September 1943, Lt. Cmdr. W. K. Perkins. Six war patrols 2 February 1944-13 May 1945; credited with sinking a 5,894-ton tanker. Converted to radar-picket submarine and redesignated SSR-312; further modernization overhaul; decommissioned 17 December 1956 and laid up in reserve. The DANFS mirror text contains OCR/transcription defects ('launched 18 June 1043', corrupted fleet and patrol-date strings) that were not carried into the record.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-18
- Study period
- 1943-1956
- Population
- PNSY construction trades (1943); crew (1943-1956); SSR conversion yard personnel
- Limitations
- Ship-specific history only; no asbestos or material content. Live NHHC page 404s; ibiblio transcription used and carries visible OCR defects - dates verified against Canada.ca and NavSource where the mirror text is corrupted.
- Atlas source
- true
- Evidence ID
- ev-uss-burrfish-ss312-01
-
[2]Government of Canada / Royal Canadian Navy, HMCS Grilse ship history (ex-USS Burrfish) [other_primary]
- Locator
- Canada.ca, 'HMCS Grilse' ship history page
- Finding type
- vessel_history
- Finding
- Canada.ca documents this hull's Canadian service: the former USS Burrfish was loaned to the Royal Canadian Navy and commissioned as HMCS Grilse on 11 May 1961; she served as an antisubmarine training and fleet-exercise submarine on the Pacific coast; the RCN paid her off on 2 October 1969 and she was returned to the U.S. Navy; she was destroyed by a Mk 46 torpedo during training off San Clemente Island on 19 November 1969. Canadian-era complement listed as 79.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-18
- Study period
- 1961-1969
- Population
- RCN crew and Esquimalt dockyard personnel (1961-1969)
- Limitations
- Official Canadian government history; no asbestos or material content. NavSource records the U.S. Navy strike as 19 July 1969 - before the RCN payoff - a discrepancy carried in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-burrfish-ss312-02
-
[3]Balao-class profile (ships-worktrees class-f/balao-class.class.json) - class-level propulsion and asbestos-relevant pathway context [other_primary]
- Locator
- class-f/balao-class.class.json (house class profile)
- Finding type
- asbestos_application
- Finding
- Balao-class context: diesel-electric fleet submarines with no boilers or steam plant; era-consistent asbestos pathways for the class include diesel-exhaust lagging, engine gaskets and packing, acoustic/thermal hull insulation, galley and refrigeration materials, and battery/electrical materials. Construction (1943, Portsmouth Navy Yard), the SSR conversion, and the 1961 RCN reactivation refit all fall inside the Navy's peak asbestos-use era.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-18
- Study period
- 1943-1969 (era)
- Population
- Balao-class construction and maintenance trades; RCN dockyard trades (era context)
- Limitations
- Class/era inference only - does not name this hull and does not establish that any particular asbestos-containing material was installed aboard SS-312 or retained through the Canadian transfer. Hull destroyed 1969; no survey possible.
- Atlas source
- true
- Evidence ID
- ev-uss-burrfish-ss312-03
-
[4]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (full text blocked, HTTP 403)
- Finding type
- gov_survey
- Finding
- GAO documented that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s - covering Burrfish's construction (1943), SSR conversion, and U.S. availabilities; the RCN's Esquimalt dockyard work on HMCS Grilse falls in the same era.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-18
- Study period
- 1979
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level documentation for the U.S. Navy only; RCN dockyard practice is era-analogous but outside GAO's scope. Supports era context only, not any fact specific to this hull. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-burrfish-ss312-04
-
[5]CourtListener API v4 (2026-09-18): sweeps for "USS Burrfish" / "Burrfish" and "SS-312" could not be executed - anonymous quota exhausted (HTTP 429) [court_record]
- Locator
- search_ledger rows sl-uss-burrfish-ss312-04 through sl-uss-burrfish-ss312-06
- Finding type
- historical_record
- Finding
- CourtListener litigation sweep NOT COMPLETED for this hull: the shared anonymous API quota (125 requests/day) was exhausted before this vessel's queries ran; every request returned HTTP 429 ('Expected available in ~69,771 seconds' at last check). No qualifying asbestos litigation was located in the other sources searched, but CourtListener coverage is absent rather than negative for this hull.
- Verification
- partial
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-18
- Study period
- 2026-09-18
- Limitations
- CourtListener gap is an absence of coverage, not a negative finding - no docket data of any kind was retrieved for this hull. State-court and non-digitized records are also uncovered. Sweep should be re-run under an authenticated API token in a future pass.
- Atlas source
- true
- Evidence ID
- ev-uss-burrfish-ss312-05
-
[6]Batch-23 search ledger (this record): DANFS mirror; Canada.ca HMCS Grilse history; NavSource data block; GAO; CourtListener sweeps [other_primary]
- Locator
- search_ledger rows sl-uss-burrfish-ss312-01 through sl-uss-burrfish-ss312-07
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record (survey, abatement contract, industrial-hygiene report, or docketed case) naming this hull was found in the public sources searched; CourtListener coverage was unavailable due to quota exhaustion (see search_ledger).
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-18
- Study period
- 2026-09-18
- Limitations
- Does not establish absence of asbestos aboard - only absence of located public documentation. Canadian-service-era material records (1961-69) were not located in public sources at all. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-burrfish-ss312-06