Evidence
9 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-9).
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[1]DANFS, 'USS Arcturus IV (AK-18/AKA-1)' (Naval History Division text, HyperWar transcription). No modern NHHC DANFS entry exists for this hull; live history.navy.mil URLs 404 as of 2026-09-21 and Wayback was offline this pass, so the HyperWar transcription of the official printing is cited. [nhhc_danfs]
- Locator
- HyperWar DANFS mirror, aka1.html - full entry incl. spec header (dp. 14,225 lim.; l. 459'1"; b. 63'; dr. 26'5"; s. 16.5 k.; cpl. 207; a. 1 5"; cl. Arcturus)
- Finding type
- vessel_history
- Finding
- Official entry documents: C-2 freighter laid down 1938-07-26 under Maritime Commission contract (MC hull 19) by Sun Shipbuilding & Dry Dock Co., Chester, PA; launched 1939-05-18 as Mormachawk (sponsor Miss Millie Foulks Lee); acquired by the Navy 1940-09-20; converted to a cargo ship at Philadelphia Navy Yard; commissioned 1940-10-26 as Arcturus (AK-18), Cmdr. Russell C. Bartman. WWII service: east-coast/Argentia-San Juan auxiliary duty 1940-42; Operation Torch - Fedhala landings 1942-11-08, present during U-130 attack 1942-11-12 (boats rescued survivors), Casablanca 1942-11-15; Norfolk Navy Yard overhaul through 1942-12-18; Noumea and Brisbane supply run 1943-01; redesignated attack cargo ship AKA-1 on 1943-02-01; Boston Navy Yard availability 1943-03-13 to 04-04; Scoglitti, Sicily (TF 85) 1943-07-10/13; Salerno-Paestum (TF 81) 1943-09-09/10 - one boat lost, 7 killed 4 wounded; Philadelphia Navy Yard overhaul from 1944-01-02; southern France - La Nartelle (TF 85 'Delta') 1944-08-15, unopposed; Naples/Oran-Marseilles/St. Tropez cargo runs through 1944-10-21; second Philadelphia Navy Yard overhaul from 1944-11-10; Panama Canal 1945-01-09, Pearl Harbor 1945-01-23, Tulagi/Guadalcanal rehearsals; Okinawa - Hagushi transport area 1945-04-01 through 14 days, undamaged, two aircraft assists; San Francisco 1945-05-18; Okinawa 1945-08-05 through Japanese capitulation; occupation lifts to Jinsen (1945-09-08) and Tientsin (1945-09-30), Manila/Zamboanga-China ferries; Shanghai departure 1945-12-04, Seattle 1945-12-22. Decommissioned 1946-04-03 at Portsmouth, VA; name struck 1946-06-05 (entry prints '5 June 19046' - typo); transferred to Maritime Commission for disposal; 'sold to a Panamanian company on 24 July 1946'; merchant service as SS Star Arcturus; five WWII battle stars.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-21
- Study period
- 1938-1947
- Population
- Ship's complement (207 per entry header; secondary compilations 267 - unmerged) plus embarked troops and POWs; yard workers during documented availabilities
- Limitations
- Official Navy history; contains no asbestos, insulation, or materials information. The printing carries an internal typo ('5 June 19046' for 1946) and its disposal-sale date conflicts with MARAD milestones (see ev-03). Does not establish any exposure condition aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-01
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[2]U.S. Maritime Administration, Vessel History Database - ARCTURUS (AKA-1), ShipHistory Detail 298 [marad_nrc]
- Locator
- ShipHistory Detail 298 - vessel particulars, milestones, status cards
- Finding type
- historical_record
- Finding
- MARAD record: year built 1939; shipyard Sun Shipbuilding and Drydock; MARAD type C2; Official Number 238808; length 435 ft, beam 63 ft; gross 6,200 / net 3,653 tons; cargo capacity 485,043 sq ft; summer draft 25.9 ft; fate 'Sold - Foreign Flag Op.' Vessel name history: ARCTURUS (AK-18), ARCTURUS (AKA-1), MORMACHAWK. Milestones: Entry 1946-07-02; Acquisition 1946-07-02 'ex MORMACHAWK'; Sold 1947-01-03 'Sold for operations under PDX-315 to Compania Naviera Puerto Bel Sur'; Disposition 1947-04-17 'Sold PD-X 315 2/10/47'; Withdrawal 1947-04-17. Three status-card scans attached as image-only files.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-21
- Study period
- 1939-1947
- Limitations
- Milestone/custody and dimensional data only - no materials, insulation, or asbestos fields. Status-card scans are image files without a text layer; contents not OCR'd or verified this pass. MARAD milestones conflict with the DANFS disposal date (see ev-03).
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-02
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[3]Cross-source check: DANFS printing vs MARAD ShipHistory Detail 298 milestones vs secondary compilations (NavSource) on disposal mechanics [marad_nrc]
- Locator
- HyperWar DANFS aka1.html final paragraph; MARAD Detail 298 milestone table; navsource.net/archives/10/02/02001.htm (secondary)
- Finding type
- vessel_history
- Finding
- Disposal mechanics conflict across sources and are not merged: (a) DANFS: 'sold to a Panamanian company on 24 July 1946'; (b) MARAD milestones: MC acquisition 1946-07-02, 'Sold' 1947-01-03 under PDX-315 to Compania Naviera Puerto Bel Sur, PD-X 315 instrument dated 1947-02-10, Withdrawal 1947-04-17; (c) NavSource compilation: 'Sold, 17 March 1947, by the Maritime Commission ... to Johnson Line (Sweden), registered in Panama with Compania Naviera Puerta del Sur' - note the buyer-name spelling difference (Puerto Bel Sur vs Puerta del Sur). MARAD custody milestones treated as controlling for the government record; the sale-date spread (1946-07-24 vs 1947-01/02/03) is unresolved at source level.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-21
- Study period
- 1946-1947
- Limitations
- Correction row: records the date/mechanics conflict so downstream readers do not merge DANFS's 1946-07-24 with MARAD's 1947 milestones or NavSource's 1947-03-17. Bears on custody history only - no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-03
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[4]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
- Journal article DOI landing page
- Finding type
- asbestos_application
- Finding
- Peer-reviewed historical study documents that asbestos was used extensively as a fireproofing and insulating material in U.S. shipbuilding during WWII - the era and Maritime Commission construction program under which this C-2 hull was built (Sun Shipbuilding, 1938-39) and the Navy-yard system (Philadelphia, Norfolk, Boston) in which she was converted and repeatedly overhauled.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-21
- Study period
- 1940-1945 era documented; article 1987
- Population
- WWII-era shipyard workers and ship crews (program context)
- Limitations
- Program-level scholarship; does not name this hull, the C-2 type, or Sun Shipbuilding specifically. Supports era context only - not evidence that asbestos was installed aboard this hull, and establishes nothing about quantities, locations, or present-day material.
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-04
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[5]GAO, 'Navy Efforts To Protect Workers From Asbestos Exposure,' HRD-80-2 (1979-10-18) [gao]
- Locator
- GAO product page HRD-80-2
- Finding type
- gov_survey
- Finding
- GAO documented the Navy's asbestos-protection program and insulation-removal policies with fieldwork at Long Beach and Norfolk Naval Shipyards - Norfolk is one of this hull's documented availability yards (overhaul through 1942-12-18), but the report's policy window (1970s) postdates her Navy service by more than three decades.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-21
- Study period
- 1979 (report); covers policies 1975-1979
- Population
- Navy shipyard workers (program level)
- Limitations
- Program-level report; the fieldwork period postdates this hull's Navy service and the report does not name the vessel. gao.gov returns HTTP 403 to automated fetches - product-page description used; full text not retrieved this pass. Establishes nothing about this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-05
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[6]CourtListener API v4 opinion-index searches for vessel name and hull designations, run 2026-09-21 (authenticated, Authorization: Token) - partial coverage only; shared daily quota exhausted mid-sweep [court_record]
- Locator
- search_ledger rows sl-uss-arcturus-aka1-06 and sl-uss-arcturus-aka1-07
- Finding type
- litigation_documented
- Finding
- PARTIAL RESULT - coverage incomplete: the 'Arcturus' opinion-index query returned 110 hits; only the first 20 results were retrievable before the shared API key re-throttled (HTTP 429). All 20 retrieved opinions are name collisions or incidental mentions, none maritime and none naming this hull: Delta Aliraq v. Arcturus International / Arcturus International v. Delta Aliraq (Ga. App. 2017-2022, commercial); SEC v. Arcturus Corp. (5th Cir./N.D. Tex. 2016-2019, securities enforcement); Arcturus Corp. v. Espada Operating (Tex. App. 2015, oil & gas); Merrill Lynch v. Arcturus Builders (N.Y. App. Div. 1990); Arcturus Manufacturing Corp. v. Rork and v. Superior Court (Cal. App. 1961-63); In re Arcturus Radio Tube Co./Corp. (D.N.J. 1940, 3d Cir. 1939, receivership); Iowa insurance matter (2022). No qualifying asbestos litigation naming this hull was located in the retrieved results.
- Verification
- partial
- Role
- correction
- Documentation level
- context_only
- Accessed
- 2026-09-21
- Study period
- opinions retrieved span 1939-2022; search date 2026-09-21
- Limitations
- INCOMPLETE SEARCH - not a negative finding for the full index: 90 of 110 'Arcturus' hits were never retrieved, and the 'Arcturus asbestos', 'AKA-1', 'AK-18', 'Mormachawk', 'Star Arcturus', and RECAP docket-level queries were all rate-limit blocked (HTTP 429, shared 2,800/day key exhausted by concurrent batch work; retried with backoff for ~90 min total, then abandoned rather than retrying into a ban). Search-stage classification only - no located record names hull AKA-1/AK-18 or involves asbestos; absence of a ship hit in the retrieved subset is not evidence of absence.
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-06
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[7]USS Arcturus (AK-18) War Diary, 1942-04-29 to 1943-02-01, and USS Arcturus (AKA-1) War Diary, 1943-02-02 to 1945-11-11 - U.S. Navy war diaries (NARA RG 38 microfilm records); digitized scans hosted by NavSource Online (02001a.pdf, 285 pp.; 02001b.pdf, 891 pp.) [other_primary]
- Locator
- navsource.net/archives/10/02/pdf/02001a.pdf (AK-18 diary, 1942-04-29 to 1943-02-01, 285 pp.) and 02001b.pdf (AKA-1 diary, 1943-02-02 to 1945-11-11, 891 pp.) - Norfolk periods at 02001a pp. 8-35, 105-136, 228-245; Boston at 02001b pp. 40-65; May 1943 Norfolk at 02001b pp. 90-121; Philadelphia 1944 at pp. 339-353 and 517-536; Naples 'dry dock' berth at p. 318
- Finding type
- vessel_history
- Finding
- The ship's own war diaries were OCR'd in full this pass (1,174 of 1,176 image pages; 2 blank scans). They confirm the DANFS-documented availabilities with berth-level detail and document three Navy-yard periods the DANFS narrative omits. Confirmed: Norfolk Navy Yard overhaul ~1942-12-08 to 1942-12-18 (Berths 7-8, Portsmouth); Boston Navy Yard availability ~1943-03-12 to ~1943-04-04 (incl. Dry Dock No. 1, ~1943-03-16/17, and Navy Yard Annex); Philadelphia Navy Yard overhaul ~1944-01-02 to ~1944-02-10 (incl. dry dock No. 3, ~1944-01-12); Philadelphia Navy Yard overhaul ~1944-11-08/10 to 1944-12-24 (Pier 'E' Berth 6, then Pier 2; underway 1944-12-24, Panama-bound by 1945-01-03). Additional Norfolk Navy Yard periods absent from the DANFS narrative: ~1942-05-07 to 1942-06-03 (Pier 4, Berth 29; 'Availability completed' 1942-06-03); ~1942-08-12 to ~1942-09-13 (Pier 5, Berth 35; 'Undergoing Navy Yard overhaul,' troop embarkation completed at Norfolk Army Base ~1942-09-14/15); and ~1943-04-30 through late May 1943 (Pier 5 Berth 35, later Berth 12) between the Boston availability and TF 85 embarkation for Sicily. Materials finding: zero hits for asbestos, insulation, lagging, magnesia, fireproofing, gasket, or packing anywhere in the OCR'd corpus - the diaries are operational documents and record no ship's-materials content. A 'dry dock' mooring reference at Naples, Italy (1943-11) is a harbor berth, not a docking availability.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-21
- Study period
- 1942-1945
- Population
- Ship's complement and embarked troops during documented availabilities; Navy-yard civilian workers at Norfolk, Boston, and Philadelphia yards 1942-1944
- Limitations
- Primary ship records (NARA RG 38 microfilm) retrieved as NavSource-hosted scans; OCR at 150 dpi is imperfect - dates and berth numbers verified against multiple pages but individual OCR errors possible. Diaries document presence at yards and dry docks, not the work performed; they contain no asbestos, insulation, or materials statements, so they neither establish nor exclude asbestos aboard. Absence of materials terms is expected for operational logs and is not probative.
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-07
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[8]Batch-972 search ledger (this record): HyperWar DANFS mirror (live NHHC 404, Wayback offline); MARAD ShipHistory Detail 298 + status-card scans; CourtListener name/hull/asbestos queries; NARA record-group guides; NavSource war-diary scans (OCR'd) and photo archive (lead only) [other_primary]
- Locator
- search_ledger rows sl-uss-arcturus-aka1-01 through sl-uss-arcturus-aka1-11
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed asbestos case naming USS Arcturus (AK-18/AKA-1) was found in the public sources searched (see search_ledger).
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-21
- Study period
- 2026-09-21
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - WWII-era Maritime Commission construction and repeated Navy-yard availabilities are consistent with era-typical materials, but nothing ship-specific was located. Does not establish or defeat any claim of exposure or legal eligibility. Scoped caveat: the CourtListener sweep was only partially completed this pass (110 'Arcturus' hits, 20 retrieved - all collisions; asbestos-filtered, hull-number, and docket-level queries rate-limit blocked), so the litigation arm of this negative finding is partial-coverage, not exhaustive.
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-08
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[9]NARA Guide to Federal Records: RG 24 (Navy deck logs), RG 38 (Chief of Naval Operations records incl. war diaries), RG 178 (U.S. Maritime Commission), RG 181 (naval districts and shore establishments) [other_primary]
- Locator
- archives.gov record-group guide pages (024, 038, 178, 181)
- Finding type
- historical_record
- Finding
- Archival leads (not retrieved - require research-room or reproduction order; no spend authorized): NARA RG 24 deck logs for AK-18/AKA-1 covering 1940-1946 service; RG 178 Maritime Commission Construction Division files that may hold M.C. hull 19 (Mormachawk) construction and outfitting papers; RG 181 records for the documented Philadelphia Navy Yard (conversion 1940, overhauls 1944-01 and 1944-11/12), Norfolk Navy Yard (1942-05/06, 1942-08/09, 1942-12, 1943-05), and Boston Navy Yard (1943-03/04) availabilities; RG 38 war-diary originals if fuller fidelity than the NavSource-hosted scans is needed; MARAD status-card scans for this hull (image-only, unverified).
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-21
- Limitations
- Record-group mapping only - not evidence about this hull. No box-level retrieval performed; NARA Catalog not queried this pass.
- Atlas source
- true
- Evidence ID
- ev-uss-arcturus-aka1-09