Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
-
[1]research packet crew-cz-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: verdict: VERIFIED — real identity: none — served entire USN career as USS ATA-180 (hull-designation-only). Queue's "USS Ata-180" matches this usage.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-ata-180-ata180-pkt-crew-cz-packet-md
-
[2]RV Horizon (Wikipedia): launched 14 July 1944, commissioned 27 September 1944 (citing NavSource Naval History photo gallery). Towingline ATR/ATA class compilation (doczz.net): planned as ATR-107, reclassified ATA-180 on 15 May 1944, built by Levingston Shipbuilding Co., Orange, TX. [other_primary]
- Locator
- RV Horizon infobox and Construction section; towingline p.7
- Finding type
- vessel_history
- Finding
- Planned and authorized as Rescue Ocean Tug ATR-107; reclassified Auxiliary Fleet Tug ATA-180 on 15 May 1944. Built by Levingston Shipbuilding Co., Orange, Texas. Launched 14 July 1944; commissioned USS ATA-180 on 27 September 1944.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-06
- Limitations
- No DANFS entry exists for ATA-180 (disclosed per Wikipedia). Builder and reclassification details come from an enthusiast compilation (towingline), not an official source; launch/commission dates via Wikipedia citing NavSource. Laid-down date not found in any source.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-180-ata180-01
-
[3]RV Horizon (Wikipedia), Service history section: served in Asiatic-Pacific Theater; laid up in Pacific Reserve Fleet; stricken 1948; the only mention of ATA-180 on the Naval History and Heritage Command web site is its listing as part of Task Unit 1.2.7 (Salvage Unit) at Operation Crossroads (citing NHHC, archived 3 May 1999). [other_primary]
- Locator
- Service history section
- Finding type
- vessel_history
- Finding
- Served in the Asiatic-Pacific Theater during WWII. Listed as part of Task Unit 1.2.7 (Salvage Unit), Joint Task Force One, at Operation Crossroads (1946). Laid up in the Pacific Reserve Fleet after the war; stricken from the Naval Register in 1948. Never formally named while in Navy service.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-06
- Study period
- 1944-1948
- Limitations
- NHHC Crossroads task-force page could not be independently verified (archived; current NHHC site not checked page-by-page). Service details are sparse across all sources; the ship's Navy career is described as obscure in the cited source. Decommission date not found.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-180-ata180-02
-
[4]UC San Diego Library Digital Collections (Alan Phinney Papers): Built for the Navy in 1944 as ATA 180, given to the Scripps Institution of Oceanography in 1949 and converted for research. H.W. Menard, The Research Ship Horizon (1974, via eScholarship): given to Scripps in 1949 and converted for research; sealed bids due December 16, 1968. Wikipedia RV Horizon: 267 cruises, 610,522 miles, 4,207 days at sea, 1949-1968. [museum_official]
- Locator
- UCSD Library item bb07518511; Menard 1974 p.1; Wikipedia Research career section
- Finding type
- vessel_history
- Finding
- Transferred to Scripps Institution of Oceanography in 1949 and converted to the oceanographic research vessel R/V Horizon. Operated 1949-1968: 267 cruises, 610,522 miles, 4,207 days at sea. Made the first of Scripps deep-sea expeditions (Midpac, 1950), contributing early evidence for plate tectonics. Sold c.1968 (sealed bids due 16 December 1968); final disposition scrapped, date unknown.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-06
- Study period
- 1949-1968
- Limitations
- Post-Navy career is the best-documented part of this hull's history and is tangential to the asbestos-exposure mission; recorded for identity completeness. Final scrapping date not established.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-180-ata180-03
-
[5]Batch-2854 search ledger (this record): CourtListener API v4 authenticated queries, 2026-10-06, --limit 20 each; all four returned zero results. [other_primary]
- Locator
- search_ledger entries sl-uss-ata-180-ata180-01 through -04
- Finding type
- litigation_documented
- Finding
- CourtListener sweep (authenticated, 2026-10-06): four base queries run via cl-auth-search.py - USS ATA-180 opinion (0 results), USS ATA-180 docket (0 results), ATA-180 opinion (0 results), ATA-180 docket (0 results). No qualifying asbestos litigation and no other litigation naming this vessel located. No overflow; no asbestos variants required.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-06
- Study period
- 2026-10-06
- Limitations
- Zero-result sweep on an unnamed hull number is a clean negative for the vessel identifier, but docket coverage is not exhaustive of all asbestos litigation venues (e.g., state-court-only filings not in RECAP). The R/V Horizon civilian career was not separately swept; no indication of asbestos litigation attaches to the research-vessel period.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-180-ata180-04
-
[6]Batch-2854 search ledger (this record): web research across Wikipedia/NavSource-citing sources, towingline compilation, UC San Diego/Scripps archival materials, shipscribe photo archive; no ship-specific asbestos record located. [other_primary]
- Locator
- search_ledger; BATCH-2854-REPORT.md
- Finding type
- asbestos_application
- Finding
- No ship-specific asbestos documentation located: no asbestos survey, abatement record, hazmat disclosure, or ship-specific product identification found in any source searched. Asbestos status is UNKNOWN per hard rules, not negative.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-06
- Study period
- 2026-10-06
- Limitations
- Absence of a located record does not prove absence of asbestos aboard. Diesel-electric plant (no steam propulsion) is recorded as context only and does not support any inference about asbestos presence or absence.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-180-ata180-05
-
[7]Towingline ATR/ATA compilation (doczz.net), ATA-180 entry p.7: specifications block. Wikipedia RV Horizon infobox: alternate displacement/speed figures. [other_primary]
- Locator
- towingline p.7 specifications; Wikipedia infobox
- Finding type
- vessel_history
- Finding
- Sotoyomo-class (ATA-174 group) characteristics per secondary sources: displacement 610 tons light / 835 tons full (towingline); 143 ft x 33 ft 10 in x 13 ft 3 in; diesel-electric, single screw, 13 knots; complement 45; armament one 3-inch/50 dual-purpose mount and two 20mm AA mounts. Wikipedia RV Horizon infobox gives variant figures (835 lt / 1,360 fl tons, 12 knots, draft 13 ft 2 in).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-06
- Limitations
- Displacement figures conflict between sources (610/835 vs 835/1,360 tons); recorded as reported with attribution, not reconciled. Complement 45 is unverified against DANFS/NHHC and is excluded from the top-level record per hard rules (see gaps). Class/era data never becomes a ship-specific finding.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-180-ata180-06
-
[8]RV Horizon (Wikipedia): vessel carried as ATA-180 through stricken 1948; never appears under a name in any source. Sister-ship naming date 16 July 1948 per USS Accokeek / USS Samoset articles. [other_primary]
- Locator
- RV Horizon infobox (Name: ATA-180 / Name: Horizon)
- Finding type
- vessel_history
- Finding
- The batch title USS Ata-180 does not reflect a formal ship name: ATA-180 was never named while in Navy service. Sister hulls received names on 16 July 1948 (e.g., ATA-181 Accokeek), but ATA-180 was already stricken that year. Ata here is the hull-type prefix, not a name. Record uses ATA-180 as the name field.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-06
- Limitations
- Naming correction is inferential (absence of any name in all sources plus stricken-before-naming-date chronology), stated as such.
- Atlas source
- true
- Evidence ID
- ev-uss-ata-180-ata180-07