Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]DANFS, Aggressive (AM-422), Naval History and Heritage Command (live page retrieved 2026-09-22) [nhhc_danfs]
- Locator
- DANFS entry, specifications block + full service narrative
- Finding type
- vessel_history
- Finding
- DANFS documents this hull: laid down 25 May 1951 at Stamford, Conn., by Luders Marine Construction Co.; launched 4 October 1952 (sponsor Mrs. Stephen M. Archer); commissioned 25 November 1953 at the New York Naval Shipyard, Brooklyn, N.Y., Lt. Lawrence W. Kelley in command; remained in the shipyard for alterations through most of 1954; shakedown at Key West; homeported at Charleston, S.C. for her entire career; alternating Sixth Fleet Mediterranean deployments with Atlantic-coast and NATO mine-warfare exercises, including participation in the 1958 landing of American forces in Lebanon; services to the Naval Mine Warfare School (Charleston), Naval Mine Defense Laboratory (Panama City, Fla.), Mine Evaluation Detachment (Key West), and Naval Ordnance Laboratory Test Facility (Fort Lauderdale); deactivation begun 1 October 1970; decommissioned 2 July 1971; stricken 28 February 1975; sold to R. E. Williams in May 1980. Spec block: 775 tons, 172 ft x 35 ft x 10 ft, 14 knots, complement 70, one 40mm gun and two .50-cal. machine guns, class Aggressive.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1951-1980
- Population
- Construction trades (Luders Marine, Stamford, 1951-53); fitting-out/alteration trades (New York Naval Shipyard, 1953-54); crew (design complement 70-77)
- Limitations
- Identity and service-chronology record only - the entry contains no asbestos, insulation, or materials information. Does not establish the presence or absence of any material aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-aggressive-am422-01
-
[2]U.S. Navy, Navy Ships fact file (dod-101), MSO 422 Aggressive class entry - verbatim mirror at Federation of American Scientists [other_primary]
- Locator
- Specifications block (Power Plant, Complement) + class narrative
- Finding type
- historical_record
- Finding
- Official Navy fact file documents the MSO-422 (Aggressive) / MSO-508 (Acme) class design: ocean minesweepers conceived in response to Korean War mining, capable of sweeping moored and bottom contact, magnetic, and acoustic mines with AN/SQQ-14 mine-countermeasures sonar; power plant 4 aluminum-block diesel engines, 2 shafts, 2,400 bhp; complement 77 active (7 officers, 70 enlisted). Documents a diesel propulsion plant for this class - no boilers and no steam distribution system.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1950s design era
- Population
- Crew and yard workers (class context)
- Limitations
- Class-level fact file, not a hull record; names no materials and no asbestos. Establishes propulsion type only - it narrows the era-typical asbestos envelope (no boiler or steam-line insulation) but does not enumerate what insulation, gasket, or packing materials were installed aboard this hull. The fact file's reference to '30-year-old USS Aggressive and USS Acme class' MSOs in the 1987-88 Persian Gulf describes the class, not this hull, which was stricken in 1975.
- Atlas source
- true
- Evidence ID
- ev-uss-aggressive-am422-02
-
[3]National Archives, 'Navy Deck Logs Available in the National Archives Catalog' - entry 'Aggressive (MSO-422)', digitized deck logs for 1961-1970 (NARA series 594258) [other_primary]
- Locator
- https://catalog.archives.gov/search-within/594258 (series search for 'Aggressive (MSO-422)')
- Finding type
- historical_record
- Finding
- NARA's official deck-log index lists 'Aggressive (MSO-422)' with digitized deck logs in the National Archives Catalog (series 594258) covering 1961 through 1970 - hull-specific operational records retrievable for future maintenance, overhaul, and material-work research.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1961-1970
- Limitations
- Archival lead only: deck logs are operational records; their existence does not speak to asbestos content. Not yet reviewed for material-bearing entries. The catalog heading's use of 'MSO-422' also corroborates the post-1955 designation.
- Atlas source
- true
- Evidence ID
- ev-uss-aggressive-am422-03
-
[4]Designation correction: DANFS prints 'MSF-422'; official records (NARA Catalog heading 'Aggressive (MSO-422)'; U.S. Navy Ships fact file entry MSO-422) establish MSO-422 [other_primary]
- Locator
- DANFS paragraph 2 ('MSF-422') vs. NARA deck-log index heading and Navy Ships fact file entry
- Finding type
- historical_record
- Finding
- The DANFS entry states 'In February 1955, her designation was changed to MSF-422' - a typographical error. MSF was the code applied in the February 1955 reclassification to surviving WWII steel-hulled fleet minesweepers; AM-422 was a new-build ocean minesweeper and was redesignated MSO-422. Two official records confirm: the NARA Catalog indexes the hull as 'Aggressive (MSO-422)', and the U.S. Navy Ships fact file lists the ship as 'MSO 422 Aggressive'.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1955
- Limitations
- The month (February 1955) is per DANFS; the day-level date of 7 February 1955 is attested in secondary compilations (NavSource, Combat Fleets) but not in the official texts retrieved this pass - day-level precision is not asserted here.
- Atlas source
- true
- Evidence ID
- ev-uss-aggressive-am422-04
-
[5]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO HRD-80-2 report text (spec-revision and delivery-window passages)
- Finding type
- gov_survey
- Finding
- GAO documented the Navy's asbestos program: product specifications for thermal insulation were revised to asbestos-free in 1973, but already-purchased asbestos materials continued to be installed and 'some ships were delivered with asbestos insulation as late as May 1978'; the Navy's October 1975 policy removed only damaged or repair-necessitated insulation, modified in January 1979 to selective replacement in high-maintenance areas. This hull's entire construction (1951-53) and commission (1953-71) fall inside the asbestos-specification era the report documents.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1973-1979 (policy window); hull era 1951-1971
- Population
- Navy shipyard workers; Navy-wide program
- Limitations
- Program-level documentation - names neither this hull, this class, nor her builder, and establishes nothing about what was installed or removed aboard. Report documents shipyard-worker protection, not shipboard crew exposure. gao.gov blocks automated fetches (HTTP 403 on both product page and PDF asset); content verified via indexed verbatim text of the official report.
- Atlas source
- true
- Evidence ID
- ev-uss-aggressive-am422-05
-
[6]Era inference from documented plant and era specifications: U.S. Navy Ships fact file (diesel plant) + GAO HRD-80-2 (Navy asbestos-insulation era to 1973/1978) [other_primary]
- Locator
- Synthesis: fact-file propulsion block + GAO HRD-80-2 era documentation
- Finding type
- asbestos_application
- Finding
- Era-typical asbestos applications aboard a 1950s diesel-propelled ocean minesweeper, inferred rather than proven for this hull: diesel exhaust-system and muffler lagging on the four main engines; machinery gaskets and packing; electrical-cable insulation; deck coverings and cements; brake linings on winches, windlass, and minesweeping gear. Because the documented plant is diesel with no boilers or steam distribution, the boiler-room and steam-line insulation envelope emphasized for steam combatants does not apply - the residual envelope concentrates in engine exhaust and machinery spaces.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1951-1971
- Population
- Construction trades (Luders Marine, 1951-53); alteration trades (New York Naval Shipyard, 1953-54); enginemen and deck-gear operators (crew)
- Limitations
- Class/era inference only - no hull-specific insulation survey, specification, or material schedule was located. Does not establish that any listed product was installed aboard this hull, any quantity, or present-day presence (the hull was scrapped in 1980).
- Atlas source
- true
- Evidence ID
- ev-uss-aggressive-am422-06
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[7]Wineland v. Air & Liquid Systems Corp., 539 F. Supp. 3d 1149 (W.D. Wash. 2021), Cause No. C19-0793RSL - order granting Crane Co.'s motion for summary judgment [court_record]
- Locator
- 539 F. Supp. 3d 1149 at 1151-52 (alleged vessel list; procedural posture)
- Finding type
- litigation_documented
- Finding
- Published litigation of the same class surface: plaintiffs alleged that John Dale Wineland was exposed to asbestos-containing products while working engine rooms aboard sister ocean minesweepers USS Dynamic (MSO-432), USS Loyalty (MSO-457), and USS Esteem (MSO-438) - the same wood-hulled diesel MSO type as this hull - plus USS Tuscaloosa, between 1963 and 1984; Wineland developed mesothelioma and died in 2018. The 2021 order GRANTED Crane Co. summary judgment for failure to show substantial-factor exposure from its products.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1963-1984 (alleged); 2021 (order)
- Population
- MSO engine-room crew (class context)
- Limitations
- Class-level litigation context only - this hull is not named in the action. Allegations are pleading-stage assertions resolved against plaintiffs at summary judgment; they are not findings of exposure aboard any vessel. Nothing about Aggressive is established or implied by this record.
- Atlas source
- true
- Evidence ID
- ev-uss-aggressive-am422-07
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[8]Batch-1335 search ledger (this record): NHHC DANFS; U.S. Navy Ships fact file; NARA deck-log catalog; GAO HRD-80-2; CourtListener API; VA BVA index; shipyards.json; MARAD/NDRF [other_primary]
- Locator
- search_ledger rows sl-uss-aggressive-am422-01 through sl-uss-aggressive-am422-10
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, specification, hazmat disclosure, or docketed case naming USS Aggressive / AM-422 / MSO-422 was found in the public sources searched (see search_ledger). The CourtListener API sweep was quota-blocked (HTTP 429; authenticated 2,800/day pool exhausted by prior batch work) and is logged as blocked, not as a negative; a web-index litigation fallback returned only non-authoritative marketing pages.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 2026-09-22
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - the ship was built and served entirely inside the Navy's asbestos era. Equally, era inference does not establish ship-specific presence. The hull was scrapped in the United States in 1980, so no present-day survey pathway exists. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-aggressive-am422-08