USNS Mission Purisima (AO-118 (1947-49); T-AO-118 (1949-57); MC hull 1268; Marinship yard no. 25; U.S. Official No. 244543; IMO 5237177 (secondary); call sign NHNW)

Name
USNS Mission Purisima
Hull designation
AO-118 (1947-49); T-AO-118 (1949-57); MC hull 1268; Marinship yard no. 25; U.S. Official No. 244543; IMO 5237177 (secondary); call sign NHNW
Vessel class
Mission Buenaventura class fleet oiler (USMC type T2-SE-A2)
Evidence tier
Tier 2
Evidence entries
12
Record ID
usns-mission-purisima
Dataset version
2026.10.12-rc.1
Canonical URL
https://asbestosatlas.org/ships/usns-mission-purisima

Evidence

12 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-12).

  1. [1]DANFS, 'Mission Purisma' (AO-118) entry, Naval History and Heritage Command (verbatim; live page 404 on 2026-09-19 and no Wayback capture located for any URL variant - text verified against the NavSource DANFS transcription page, archives/09/19/19118h.htm) [nhhc_danfs]
    Locator
    DANFS entry - spec block and narrative paragraphs; transcription at http://www.navsource.net/archives/09/19/19118h.htm (verified word-for-word 2026-09-19)
    Finding type
    vessel_history
    Finding
    DANFS records: 'A merchant name retained. A Franciscan mission in California founded in 1787.' Spec block: '(AO-118: dp. 21,880; l. 524'; b. 68'; d. 30'; s. 16.5 k.; cpl. 52; a. none; cl. Mission Buenaventura; T. T2-SE-A2)'. Laid down 10 June 1943 under a Maritime Commission contract by Marinship Corp., Sausalito, Calif.; launched 25 August 1943; sponsored by Mrs. John Collins; delivered 23 November 1943. 'Chartered to Deconhill Shipping Co., for operations, she carried fuel to our forces in the Pacific and the Atlantic theaters until 27 April 1946 when she was returned to the Maritime Commission and laid up in the Maritime Reserve Fleet at Suisun Bay, Calif.' Acquired by the Navy 15 October 1947, placed in service with Naval Transportation Service as Mission Purisma (AO-118), continuing until 'taken over by the new Military Sea Transportation Service on 1 October 1949 and designated USNS Mission Purisma (T-A0-118).' Served with MSTS until 16 May 1955, returned to the Maritime Administration and laid up at Olympia, Wash., struck from the U.S. Naval Vessel Register the same date. 'Reacquired by the Navy on 26 June 1956 she was placed in service with MSTS and served until returned to MARAD on 4 December 1957 and laid up at the Maritime Reserve Fleet at Suisun Bay, Calif. Struck from the U.S. Naval Vessel Register on the same date, she remains berthed at Suisun Bay, Calif., into 1969.'
    Verification
    verified
    Role
    supporting
    Documentation level
    ship_specific
    Accessed
    2026-09-19
    Study period
    1943-1969
    Population
    Merchant crew (1943-46); NTS/MSTS civilian mariners (1947-57)
    Limitations
    Official Navy ship history. DANFS misspells the ship's name 'Mission Purisma' throughout - including the canonical URL - the correct name is Mission Purisima (for Mission La Purisima Concepcion, Lompoc); it also prints 'T-A0-118' (zero). Narrative coverage ends ~1969 - contains no post-service disposition and no asbestos, insulation, or materials information. Live page 404s (NHHC link rot) and no Wayback capture was located - entry text verified via NavSource's verbatim transcription (submitted by Ramon Jackson); canonical NHHC URL needs re-locating before production use. Does not establish any asbestos fact.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-01
  2. [2]NavSource Online, Service Ship Photo Archive - USNS Mission Purisima (T-AO-118) ex Mission Purisima (AO-118) page (content verified via Wayback capture 20240527082607; direct fetch unreliable) [other_primary]
    Locator
    Page 19118.htm - class history bullet list, 'Specifications' block, ribbon display, and photo captions (Wayback capture 20240527082607)
    Finding type
    vessel_history
    Finding
    NavSource timeline extends DANFS past 1969: laid down 10 June 1943 as a Maritime Commission type T2-SE-A2 tanker hull under MC contract (MC hull 1268) at Marinship Corp., Sausalito; launched 25 August 1943; 'Chartered by War Shipping Administration to Deconhill Shipping Co. for operations, 23 November 1943'; returned to the Maritime Commission 26 April 1946 for layup NDRF Suisun Bay, Benicia; acquired by the Navy 15 October 1947 and placed in service with NTS as Mission Purisima (AO-118); control transferred to MSTS 1 October 1949 as USNS Mission Purisima (T-AO-118); placed out of service, struck, and returned to the Maritime Commission 16 May 1955 for NDRF Olympia, WA; reacquired 26 June 1956 for MSTS; placed out of service, struck, and returned to MARAD 4 December 1957 for NDRF Suisun Bay; 'Final Disposition, sold for scrapping to American Ship Dismantlers, Inc., 27 April 1976, under MARAD contract PD-X-1006 of 16 March 1976, for $1,019.121.21' [sic]. Spec block: 5,532 lt / 21,880 fl; 523'6"; 68'; 30'10"; 15.1 kts trial; 52 CivMar + 17 USN Armed Guard; wartime armament one 5"/38, four 3"/50, four twin 40mm, four twin 20mm; cargo 15,300 DWT - oil 120,400 bbl, gasoline 575,000 gal; fuel NSFO 9,235 bbl; one GE turbo-electric engine, two B&W D-type boilers 600psi/825F, single propeller 10,000 shp; ship's service generators two 400kW 450V AC, two 85kW 120V DC, two 55kW 120V DC, one 50kW 450V AC turbo-driven. Call sign NHNW. Ribbon display: National Defense Service Medal, Korean Service Medal, United Nations Service Medal, Republic of Korea War Service Medal (retroactive).
    Verification
    verified
    Role
    supporting
    Documentation level
    ship_specific
    Accessed
    2026-09-19
    Study period
    1943-1976
    Population
    MSTS civilian mariners (1949-57); merchant crew under Deconhill GAA (1943-46)
    Limitations
    Private archival compilation, not an official record - used to carry the record past DANFS's ~1969 cutoff and for the propulsion/armament/complement block. Entry date '26 April 1946' conflicts with DANFS and the MARAD master custody card ('27 April') - logged in gaps. The sale figure prints '$1,019.121.21' [sic] and, per the MARAD MA-20 sale record, was a lump sum covering four ships under solicitation PD-X-1006 - PD-X-1006 is the solicitation number; the contract itself was MA-8389, awarded under the non-transportation-use (NTU) condition, not the scrap-hull condition. Armament block reflects the WWII merchant fit, not the later USNS configuration. Ribbon awards unverified against a service record. Contains no asbestos information.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-02
  3. [3]U.S. Maritime Administration, ShipHistory database - MISSION PURISIMA, Ship History Detail 3402, including seven digitized vessel status-card scans (3402_6303AF/BF/BB/CF/CB, 3402_AF, 7SU_01.png) read directly [marad_nrc]
    Locator
    ShipHistory Detail 3402 - vessel header, milestone table, and status-card scans (cards 3402_6303AF/BF/BB/CF/CB, 3402_AF, 7SU_01.png at /cards/)
    Finding type
    vessel_history
    Finding
    MARAD ShipHistory header for this hull: Year Built 1943; Official No. 244543; Shipyard 'Marinship Corporation'; length 503 ft, beam 68 ft, net 7,337, gross 10,461, immersion (summer) 21,800; fate 'Sold -NTU'; milestones table lists Entry and Acquisition 4/26/1946 and Disposition/Withdrawal 5/11/1976. The digitized STATUS CARDS - primary fleet custody documents - carry the full chain: 'Basis to W.S.A. 11-23-43 6-PM PWT @ Oakland, Calif.' with delivery to Deconhill Shipping Co. under GAA at Oakland the same day; Reserve Fleet entry at Suisun Bay '4-27-46 10:00AM PST' (master card; the fleet-entry card and web milestones give 4-26-46 - one-day conflict logged); 'Deld to Navy Dept' at Suisun Bay 10-15-47 11:15; Reserve Fleet (Navy Surplus)/MSTS custody entry at Olympia, Wash. 5-16-55 1:20pm PST (arrival draft fwd 1'11", aft 15'0"); Navy Department TITLE transfer at Olympia 6-26-56 9:30am PST; Reserve Fleet 'Permanent Transfer' reentry at Suisun Bay 12-4-57 12:45pm PST ('Navy ltr. 8-15-57; Marad reply 8-19-57'); American Ship Dismantlers, Inc. purchase ('Non-transportation Use') at Suisun Bay 4/27/76; withdrawn 5-11-76 0920 PDT. The 1946 layup card annotates 'Boilers and auxiliaries in bad condition' and termination port of last voyage 'Portland'; the 1955 Olympia card gives layup reason 'See MacMichael Ltr. 10-19-54 Re: Agreement of July 1, 1954 / USMA Title.' Card backs carry machinery figures '10461 Gr. 7337 Net, 21880 Displ., 10000 SHP, 2 WTB' and the stamped WARNING that on reactivation the operator and General Electric Co., Washington, D.C., must be notified so GE can 'inspect and overhaul as needed the main generator turbine control and throttle valve stems before turbine is started,' per GE letter of January 17, 1947. The MA-20 'Record of Ship Sales' card records: contract no. MA-8389; 'Advertised under PD-X-1006 dated 3-16-76 opened 4-20-76 under two condition: (1) NTU (2) SCRAP HULL-US. Award under condition (1) NTU'; purchase price 'Lump Sum for 4 / $1,019,121.21'; dimensions molded 503' x 68' x 39'3".
    Verification
    verified
    Role
    supporting
    Documentation level
    ship_specific
    Accessed
    2026-09-19
    Study period
    1943-1976
    Limitations
    Authoritative custody record - the digitized status cards are primary MARAD fleet documents read directly (live site fetch worked 2026-09-19). The web milestones table is incomplete (1946 and 1976 entries only) and header 'Specific Type: LNG Liquefied Natural Gas' is a data-quality artifact - this was an oil tanker, never LNG. The 1946 layup date conflicts card-to-card (4-27 master vs 4-26 fleet/milestones). NTU sale condition documented; whether the hull was physically scrapped is not recorded. Contains no asbestos, materials, or condition-survey information beyond the noted machinery remarks; supports no asbestos claim.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-03
  4. [4]Pacific Marine Review, Vol. 41, May 1944, 'Marinship Special; T2 Tankers' Parts 1-2 (mirrored at aukevisser.nl, id1048.htm and id1049.htm) - contemporaneous trade-press account of the Marinship T-2 program photographed and narrated around this hull [other_primary]
    Locator
    id1048.htm (Part 1: program narrative, power plant) and id1049.htm (Part 2: subcontractor and vendor lists)
    Finding type
    asbestos_application
    Finding
    The May 1944 Pacific Marine Review program account - built around SS Mission Purisima as its exemplar ('first of a fleet of "mission" tankers to be built by Marinship, and is the yard's tenth T-2. The first nine were delivered to the Navy'; 'the 16,500-ton tanker set a new construction record for the tenth T-2 built in any shipyard with a total elapsed time of 166 days from keellaying to delivery') - names the program's subcontractors, including 'Plant Rubber & Asbestos Works, heat insulation'; 'Armstrong Cork Company, refrigerator boxes and fiber glass insulation'; 'J. M.J. Firebrick Construction Company, boiler brick work'; 'Pacific Erecting Company, boiler erection'; 'Turner Resilient Floors, Inc., deck coverings'; 'Selby Battersby & Co., plastic armor'; 'National Joinery Company ... all joiner work.' The article also details the plant: two Babcock & Wilcox two-drum water-tube oil-burning boilers under forced draft with superheater and economizer (600 psi at superheater outlet; steam to throttle at 590 psi / 815 F); a GE 14-stage turbine driving a generator (normal 6,890 kW / max 7,650 kW) feeding a direct-connected propulsion motor (9,000 shp normal / 10,000 shp max continuous) on a single screw.
    Verification
    verified
    Role
    supporting
    Documentation level
    class_or_era
    Accessed
    2026-09-19
    Study period
    1944 (article); construction period 1943
    Population
    Marinship construction trades and subcontractors on the T-2 program (1943-45); ship crew
    Limitations
    Contemporaneous program-level documentation, not a bill of materials for hull 1268: the vendor list covers 'these ships' (the Marinship T-2 program) as a group. 'Plant Rubber & Asbestos Works' documents the heat-insulation trade supplier for the program that built this hull - it does not name this vessel's installed materials and does not itself prove asbestos content aboard this hull (the firm's name denotes its trade, not a product analysis). Armstrong Cork's listed scope is fiber glass, not asbestos. Establishes no quantity, location, condition, exposure, or causation.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-04
  5. [5]Auke Visser T-2 tanker reference, per-hull page 'Mission Purisma' (UMSC no. 1268) + shipbuildinghistory.com T-2 tanker production table (2t2tankers.htm) [other_primary]
    Locator
    id83.htm - per-hull history block and launch footnote; shipbuildinghistory.com/merchantships/2t2tankers.htm - MC 1268 row
    Finding type
    vessel_history
    Finding
    Specialist T2-tanker per-hull record: built by Marinship Co., Sausalito, yard no. 25, UMSC no. 1268, official no. 244543; keel 10-06-1943; launched 25-08-1943; completed 23-11-1943; 10,448 grt / 6,423 net / 16,613 dwt; LOA 159.57 m, beam 20.78 m, draft 8.99 m; two GE steam turbines (listed Lynn, Massachusetts), 10,000 BHP, 15 kt, 26 tanks. Launch footnote: 'SS Mission Purisima, T-2 Tanker, hull #25, keel laid 6/10/43, launched August 25, 1943. Sponsor: Mrs. John Collins, wife of Labor-Management Committee member; matron of honor Mrs. Arthur Rochester. In USMC Reserve Fleet in October, 1960.' Shipbuildinghistory T-2 table corroborates: '1268 | MarinShip | 25 | Mission Purisima | 10-Jun-43 | 25-Aug-43 | 23-Nov-43 | ... | AO 118, to NDRF 1955, scrapped.'
    Verification
    verified
    Role
    supporting
    Documentation level
    ship_specific
    Accessed
    2026-09-19
    Study period
    1943-1976
    Limitations
    Specialist secondary compilations, not official records - used for yard number, tonnage/dimension detail, and launch-party identification. Page title carries the 'Purisma' misspelling; hull's registered name is Purisima. Turbine works location (Lynn, Mass.) differs from the sister-hull record's Cleveland, Ohio - GE works assignment not resolved. 'Scrapped' is summary framing - the MARAD record specifies the NTU award condition. No asbestos information.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-05
  6. [6]Calisphere / Marin County Free Library, Anne T. Kent California Room - Marinship 1942-1945 collection: 'Officials aboard the SS Mission Purisima, a T-2 tanker built at Marinship, Marin County, during a trial run on November 5, 1943' (identifier csrcl_1271 / 1344.001.014) and companion trial-run photographs of this hull [museum_official]
    Locator
    Calisphere item 39108a4803b0e6259b5333565c7cb61c plus related items in the Marinship 1942-1945 collection (multiple Purisima trial-run photographs)
    Finding type
    historical_record
    Finding
    The county-library archive holds multiple photographs of SS Mission Purisima during her 5 November 1943 trial run on San Francisco Bay, including the named officials aboard (Fred W. Boole; F. Somers Peterson; F.W. Alkire; J.W. Stafford; K.K. Bechtel; Richard J. Grundy; Ray L. Hamilton; G. Van Ankin; Capt. V.P. Marshall; W.B. Fawke; Capt. W.J. Fowler; Rene DeVaranne; Gordon DeLisle; Russ E. Griffin; P.J. Merrill). The catalog describes her as 'the first tanker to be fully completed at Marinship' and documents the yard context: Marinship (W.A. Bechtel Co.) operated 1942-1945, built fifteen EC-2 Liberty ships, seventy-eight oil tankers, and twenty invasion barges, with a peak multi-ethnic workforce of 20,000.
    Verification
    verified
    Role
    context
    Documentation level
    ship_specific
    Accessed
    2026-09-19
    Study period
    1943
    Population
    Marinship officials and workers aboard the trial run, 1943-11-05
    Limitations
    Institutional archive catalog record - documents the hull's 1943 trial run and yard context, not machinery or insulation content. 'First tanker to be fully completed at Marinship' reads loosely against Pacific Marine Review's 'yard's tenth T-2' (the first nine went to the Navy) - reconciles only if read as first Mission-type/commercial-account tanker; flagged in gaps. Contains no asbestos information.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-06
  7. [7]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 in U.S. shipbuilding during WWII - the era and Maritime Commission program under which this 1943 T2-SE-A2 tanker was built - and that wartime demand drove unprecedented asbestos utilization aboard merchant-type hulls.
    Verification
    verified
    Role
    context
    Documentation level
    class_or_era
    Accessed
    2026-09-19
    Study period
    1940s era documented; article 1987
    Population
    WWII shipyard workers and ship crews (class context)
    Limitations
    Program/era-level scholarly documentation of asbestos use in WWII shipbuilding generally; does not name this vessel and does not establish that asbestos was or remains aboard this hull, nor quantity, location, condition, exposure, or causation.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-07
  8. [8]Fleischer, W.E., Drinker, P., et al., 'A Health Survey of Pipe Covering Operations in Constructing Naval Vessels,' Journal of Industrial Hygiene and Toxicology 28(1):9-16 (1946) - U.S. Maritime Commission-commissioned industrial hygiene survey [other_primary]
    Locator
    J. Ind. Hyg. Toxicol. 28(1):9-16 (1946), PMID 21016030
    Finding type
    gov_survey
    Finding
    A U.S. Maritime Commission-commissioned industrial hygiene survey of WWII shipyard pipe-covering operations documented amosite asbestos pipe covering and boiler-block insulation being cut and fitted at contract shipyards - the documented product environment at yards of the type and era at which this hull was built (Marinship, Sausalito, 1943). The builder yard is documented in the companion shipyard dataset as an asbestos-exposure site (marinship-sausalito: USMC Pacific Coast shipyard survey era; amosite pipe covering/felt, asbestos boiler block, asbestos gaskets, and asbestos millboard are listed among the yard's documented products). The contemporaneous Pacific Marine Review account (ev-04) corroborates at program level by naming 'Plant Rubber & Asbestos Works' as the Marinship T-2 heat-insulation subcontractor.
    Verification
    verified
    Role
    context
    Documentation level
    class_or_era
    Accessed
    2026-09-19
    Study period
    1942-1945 (survey era); published 1946
    Population
    Construction trades at WWII contract yards, including Marinship workers on this hull's build (Jun-Nov 1943)
    Limitations
    Yard/era-level documentation - the survey covered multiple contract yards as a group and names neither Marinship nor this hull; it establishes the documented product environment for construction-period workers, not asbestos presence on this vessel. The companion-dataset yard record is a separate shipyard file, not a hull record. No hull-level proof.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-08
  9. [9]Shipscribe USN auxiliaries compilation, MISSION BUENAVENTURA (T-AO 111, T2-SE-A2) class page - construction/disposal tables and class narrative (built from Naval Vessel Register and MARAD data) [other_primary]
    Locator
    AOT111.html - Construction table row 118, Disposal table row 118, class narrative (Cargo Preference Act / 1956 reactivation paragraphs), class spec block
    Finding type
    vessel_history
    Finding
    Register-based compilation: MISSION PURISIMA (AO-118) - construction table gives acquired 15 Oct 1947, Marinship, keel 10 Jun 1943, launch 25 Aug 1943, in service 15 Oct 1947 (agreeing with DANFS); disposal table: out of service 4 Dec 1957, struck 4 Dec 1957, to MA 4 Dec 1957, sold 27 Apr 1976. Class narrative documents the context of her 1956 reactivation: the Cargo Preference Act of 1954 required MSTS to carry half of bulk POL in U.S.-flag commercial tankers 'to the extent such vessels are available at fair and reasonable rates,' forcing government tanker inactivations; a late-November 1955 charter-rate spike left MSTS facing 'too few ships at too high a rate,' and on 21 May 1956 Commander MSTS requested authority to reacquire ten laid-up T2-SE-A2s - T-AO 82, 85, 87, 115, 116, 118, 122, 127, 128, and 130 - with SECNAV requesting the ships from Commerce 22 May 1956 and Commerce agreeing 6 June 1956; per standard MSTS practice these tankers were assigned to commercial firms for operation. Class specs: 5,630 lt / 21,880 fl; 524' oa / 503' wl x 68' x 30'; 16 kts; turbo-electric, 2 boilers 600psi/825F; accommodations 11-13 officers + 34-36 unlicensed.
    Verification
    verified
    Role
    supporting
    Documentation level
    ship_specific
    Accessed
    2026-09-19
    Study period
    1943-1976; class context 1947-1978
    Population
    NTS/MSTS-era civilian mariners and contract-operator crews (1947-57)
    Limitations
    Scholarly secondary compilation from register data - used for the 1956 reacquisition context naming this hull's cohort and class accommodations. The class block prints '2 screws' - a class-table error against the contemporaneous account ('single screw U.S.M.C. design') and NavSource ('single propeller'); single screw adopted. No asbestos information.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-09
  10. [10]Maritime Reporter and Engineering News directory listings (April 1976 and October 15, 1977) + EPA DOCUMERICA photograph, April 1973 (NARA/DPLA) - buyer identification for the 1976 sale [other_primary]
    Locator
    Maritime Reporter Apr 1976 and Oct 15 1977 directory pages (marinelink.com archive); DPLA item d0c069489630d7370d809a01ac55de0b / NARA id 548147
    Finding type
    historical_record
    Finding
    Period trade-directory listings identify the hull's 1976 buyer as a Portland, Oregon shipbreaking concern: 'American Ship Dismantles[sic], Inc., Division of Schnitzer Industries, 3300 N.W. Yeon Avenue, Portland, Ore. 97210' (Apr 1976) and 'American Ship Dismantling Operations, 4200 N.W. Front, Portland' under Schnitzer Industries (Oct 1977). An EPA DOCUMERICA photograph (April 1973, NARA catalog id 548147 via DPLA) shows 'heaped-up scrap iron at the American Ship Dismantling Division on the Willamette River, just south of the Columbia,' Portland - corroborating that the buyer's trade was ship dismantling, consistent with NavSource's 'sold for scrapping' framing.
    Verification
    verified
    Role
    context
    Documentation level
    context_only
    Accessed
    2026-09-19
    Study period
    1973-1977
    Population
    Shipbreaking-yard workforce, Portland OR (1976 era, context)
    Limitations
    Buyer-identification context only - establishes the purchaser's trade and location, not that this hull was physically broken at Portland; the MARAD award ran under the non-transportation-use condition and the breaking event itself is undocumented. Contains no asbestos information.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-10
  11. [11]Batch-418 search ledger (this record): NHHC/DANFS via NavSource transcription (live 404, no Wayback capture); NavSource 19118 via Wayback; MARAD ShipHistory Detail 3402 + seven digitized status-card scans read directly; Pacific Marine Review May 1944; aukevisser/shipbuildinghistory T2 references; shipscribe class compilation; Calisphere/MCFL archive; Maritime Reporter/DPLA buyer identification; NVR; indexed-web litigation sweeps; CourtListener (blocked) [other_primary]
    Locator
    search_ledger rows sl-usns-mission-purisima-01 through sl-usns-mission-purisima-11
    Finding type
    historical_record
    Finding
    No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, court finding, or docketed asbestos case naming this hull under any of its designations or misspellings (Mission Purisima, 'Mission Purisma,' AO-118, T-AO-118, USNT) was found in the public sources searched (see search_ledger). Indexed-web litigation sweeps returned no case naming this hull at all - hits were registry/reference pages and the namesake mission (Mission La Purisima Concepcion); no qualifying asbestos litigation under any designation.
    Verification
    verified
    Role
    negative_finding
    Documentation level
    ship_specific
    Accessed
    2026-09-19
    Study period
    2026-09-19
    Limitations
    Absence of a located public record does not prove absence of asbestos aboard - a 1943 high-pressure steam tanker built under a program whose heat-insulation subcontractor was an asbestos works is era-consistent with asbestos-containing insulation, and no abatement record was located either. Does not establish presence or absence; does not establish or defeat any exposure claim or legal eligibility. CourtListener was unreachable at research time (API HTTP 429, 'Expected available in 33858 seconds' - ~9.4-hour throttle window, 2026-09-19) - the systematic docket/name sweep could not be run and remains an open item.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-11
  12. [12]NARA Guide to Federal Records: RG 178 (U.S. Maritime Commission), RG 248 (War Shipping Administration); MARAD PD-X-1006/MA-8389 sale files; NDRF vessel files; ship deck logs 1947-1957; Marin County Free Library Marinship collection; NavalCoverMuseum [other_primary]
    Locator
    archives.gov record-group guides (RG 178, RG 248); MARAD ShipHistory documents tab (empty for this hull - file may exist undigitized); MCFL/Calisphere collection page; navalcovermuseum.org T-AO-118 page
    Finding type
    historical_record
    Finding
    Archival leads (not retrieved - requires research-room or reproduction order; no spend authorized): NARA RG 178 Construction Division and Pacific Coast construction records may hold the Marinship contract/outfitting specifications for MC hull 1268, including the heat-insulation subcontract scope behind the PMR 'Plant Rubber & Asbestos Works' listing; RG 248 holds War Shipping Administration vessel files covering the 1943-46 Deconhill Shipping Co. GAA operation; ship deck logs for the NTS/MSTS era (1947-1957) are at NARA; the MARAD PD-X-1006/MA-8389 sale file would settle the NTU-vs-scrapping question and identify the three companion hulls in the four-ship lump-sum award; the Marin County Free Library Marinship collection holds additional trial-run photographs of this hull beyond the cited item; NavalCoverMuseum documents philatelic covers for T-AO-118.
    Verification
    unverified
    Role
    archival_lead
    Documentation level
    context_only
    Accessed
    2026-09-19
    Study period
    1943-1976 records
    Limitations
    Record-group and collection mapping only - no box-level retrieval performed; existence of asbestos-specific documents for this hull is unknown until surveyed in person. Nothing in this row is an asbestos finding.
    Atlas source
    true
    Evidence ID
    ev-usns-mission-purisima-12

Attribution

Compiled by
Paul Danziger; Rod de Llano
Publisher
Danziger & De Llano, LLP
License
CC-BY-4.0
Citation
Danziger, P., and De Llano, R. (2026). AsbestosAtlas Navy Vessel Asbestos Exposure Dataset. Danziger & De Llano, LLP. DOI: not yet assigned
Dataset version
asbestosatlas-ships-2026.10.12-rc.1
DOI
not yet assigned