Evidence
4 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-4).
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[1]Wikipedia, 'List of mine warfare vessels of the United States Navy,' section 'Coastal minesweepers (Underwater locator) (AMCU)' (aggregator/research lead, not an official Navy source) [other_primary]
- Locator
- Section listing AMCU-1 through AMCU-6 as unnamed entries, followed by named AMCU-12+ series
- Finding type
- vessel_history
- Finding
- The AMCU hull classification symbol designated 'Minesweeper, Coastal (Underwater Locator).' AMCU-1 through AMCU-6 were the first group of the type: unnamed, non-commissioned auxiliary craft converted from standard LCT(6) (Landing Craft, Tank, Mark 6) hulls, distinct from the later, larger AMCU series (AMCU-12 and up) that received individual names and DANFS entries after 1951-52 conversions from LCI(L)/PCS hulls. No individual DANFS entry, Naval Vessel Register record, or other official Navy history-office page specific to AMCU-6 was located or confirmed in this research pass.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-24
- Study period
- 1944-1947 (era of the AMCU-1-6 group's existence, per this lead)
- Limitations
- Not an official/authoritative source under this database's evidence standard; used only to establish the AMCU designation's meaning and the AMCU-1-6 group's existence. Does not itself cite a primary Navy record accessible in this pass. Establishes no ship-specific fact about AMCU-6, no dates, no disposition, and no asbestos information. history.navy.mil, the source this listing likely draws from, returned HTTP 503 on every attempt to verify directly.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-6-amcu6-01
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[2]NavSource Naval History, AMCU-1 and AMCU-2 archive pages (independent naval-history compilation, not an official Navy publication) [other_primary]
- Locator
- AMCU-1 and AMCU-2 entries, specifications section (accessed via search-engine snippet; the site itself could not be reached directly through this session's network path, so the full page was not independently read)
- Finding type
- vessel_history
- Finding
- Independent naval-history archive entries for early-group sister conversions AMCU-1 (ex-LCT(6)-843) and AMCU-2 (ex-LCT(6)-844) describe roughly 143 tons displacement, approximately 10 knots speed, and three Gray Marine 6-71 diesel engines on three shafts. No individual page or record for AMCU-6 (ex-LCT(6)-890) itself was located.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- class_or_era
- Accessed
- 2026-09-24
- Study period
- 1944 (LCT(6)-to-AMCU conversion era)
- Limitations
- Not an official/authoritative source; carried only as an unverified lead for what AMCU-6, as an early-group sister conversion, may generally have resembled. Does not confirm AMCU-6's own specification, does not establish any asbestos-containing material, and was not independently re-verified by direct page access (search-snippet only). Should not be treated as ship-specific or even confirmed class-specific fact without independent confirmation from an official source.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-6-amcu6-02
-
[3]Corn, Jacqueline Karnell, and Jennifer Starr, 'Historical perspective on asbestos: Policies and protective measures in World War II shipbuilding,' American Journal of Industrial Medicine 11(3):359-373 (1987) [other_primary]
- Locator
- Abstract and article, AJIM 11(3):359-373
- Finding type
- asbestos_application
- Finding
- Peer-reviewed historical study documents that asbestos was used extensively as a fireproofing and insulating material across U.S. shipbuilding during World War II, the era and emergency-construction program under which LCT(6) hulls (including LCT(6)-890, later AMCU-6) were mass-produced, and that wartime demand drove unprecedented asbestos utilization across Navy and merchant hull types generally.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-24
- Study period
- 1940s era documented; article published 1987
- Population
- WWII shipyard workers and Navy/merchant ship crews generally (era context only)
- Limitations
- Program/era-level scholarly documentation of asbestos use in WWII shipbuilding generally; does not name this vessel, does not address small landing-craft-derived auxiliary hulls specifically, and does not establish that asbestos was or remains aboard this hull, nor quantity, location, condition, exposure, or causation. No class-specific technical manual documenting materials for the LCT(6)-to-AMCU conversion was located.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-6-amcu6-03
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[4]CourtListener API v4 search (opinions, dockets, and full-text RECAP), queries "AMCU-6" and "LCT(6)-890" [court_record]
- Locator
- search type=o and type=d, 0 results each; search type=r checked for false negatives via grep, no matches
- Finding type
- litigation_documented
- Finding
- CourtListener opinion search for "AMCU-6" and for "LCT(6)-890" returned zero results. CourtListener RECAP docket search for "AMCU-6" returned zero results; a broader OR-query RECAP full-text search returned an unrelated result set that was checked line-by-line for AMCU-6, LCT(6)-890, and LCT-890 with no matches found. This matches the batch tasking's own PRIMARY all-tier check, which found no matching hull among the researched designations and names.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- Establishes only that no litigation record naming this hull under either identifier was found in CourtListener/RECAP as searched on this date. CourtListener/RECAP coverage of pre-1950s administrative and disposition records, and of state-court dockets not electronically filed, is not exhaustive; absence of a hit here is not proof that no asbestos litigation naming this hull exists anywhere.
- Atlas source
- true
- Evidence ID
- ev-uss-amcu-6-amcu6-04