USS LSM-86

Evidence

14 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-14).

1. [1]NavSource Online, Amphibious Photo Archive, USS LSM-86 hull page (history extract credited to LSM-LSMR Amphibious Forces Vol. II, Turner Publishing, 1997) [other_primary]

   Locator

   Hull page chronology: laid down/launched/commissioned lines and commanding-officer list (Stevens, 13 October 1944 - December 1945)

   Finding type

   vessel_history

   Finding

   LSM-86 was laid down 22 August 1944 at Brown Ship Building Co., Houston, Texas; launched 15 September 1944; and commissioned as USS LSM-86 on 13 October 1944 with Lt. Grover T. Stevens, USNR, in command.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-02

   Study period

   1944

   Population

   Brown Ship Building construction workforce and commissioning crew

   Limitations

   Establishes construction and commissioning identity; NavSource is a volunteer secondary compilation whose extract tracks the cited Turner Publishing volume. The page does not document asbestos, insulation composition, hazmat condition, exposure, or causation. Page verified live 2026-10-02 (HTTP 200, navsource.net - the .org domain is dead).

   Atlas source

   true

   Evidence ID

   ev-uss-lsm-86-lsm86-01

2. [2]NavSource Online, Amphibious Photo Archive, USS LSM-86 hull page [other_primary]

   Locator

   Hull page chronology: Argentine conversion through final disposition lines

   Finding type

   vessel_history

   Finding

   Per the NavSource/Turner extract: during 1968-69 the ex-LSM-86 was converted to a minesweeper support vessel and named ARA Corrientes (Q70); decommissioned and struck from the Argentine Naval Register 19 June 1971; laid up in reserve at Buenos Aires; sold to Paraguay in 1971 with a helicopter deck added, departing Buenos Aires 1 January 1972 and arriving Asuncion 13 January 1972; commissioned into the Paraguayan Navy as Boqueron Porta Helicopteros (P-H); redesignated 1 April 1975 as command vessel Boqueron (B.C.1); decommissioned 21 December 1995; final disposition scrapped 2003-04 near Asuncion.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-02

   Study period

   1968-2004

   Population

   Argentine Navy conversion crews (1968-69); Paraguayan Navy crews (1971/72-1995); breakers near Asuncion (2003-04)

   Limitations

   Establishes the Argentine-to-Paraguayan career chain and 2003-04 scrapping; no asbestos, hazmat, or scrapping-condition content. Paraguayan-segment details rest on this secondary extract - no Paraguayan official record was located. Shipbuilding History corroborates the chain ('to minesweeper Corrientes, to Paraguay 1972 as Boqueron, scrapped 2003').

   Atlas source

   true

   Evidence ID

   ev-uss-lsm-86-lsm86-07

3. [3]Naval History and Heritage Command, Navy Department Library Online Reading Room: 'United States Pacific Fleet Organization, 1 May 1945' [nhhc_danfs]

   Locator

   Archived copy, LSM FLOTILLA NINE > LSM GROUP 25 > LSM DIVISION 50, row 'LSM 86 - Lt. G. T. Stevens (USNR)', ~pp. 69-70 of the document

   Finding type

   vessel_history

   Finding

   The official NHHC Navy Department Library transcription of 'United States Pacific Fleet Organization, 1 May 1945' lists LSM 86 under LSM Flotilla Nine, LSM Group 25 (ComLSMGrp 25: Lt. Cdr. T. A. Peacock, USNR), LSM Division 50, with Lt. G. T. Stevens (USNR) as commanding officer - corroborating the flotilla/group assignment and the commissioning commanding officer, at a different division number (50 vs NavSource's Forty-Nine).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-02

   Study period

   1945-05-01

   Population

   Ship's company and Pacific Fleet personnel

   Limitations

   Organizational roster only: establishes unit assignment and commanding officer as of 1 May 1945 but documents no operations, location, or service event for this hull, and contains no asbestos or material content. The cited copy is archived because the live NHHC URL returns 404; note the 2019-11-16 Wayback capture truncates before the LSM sections - the 2020-10-03 capture cited here is complete.

   Atlas source

   true

   Evidence ID

   ev-uss-lsm-86-lsm86-03

4. [4]NavSource Online, USS LSM-86 specifications block [other_primary]

   Locator

   Specification block (displacement through propulsion and generators)

   Finding type

   historical_record

   Finding

   The hull page specification block lists: displacement 520 t light / 743 t landing / 1,095 t fully loaded; length 203'6" overall; beam 34'6"; speed 13.2 kts max (at 928 t displacement); complement 5 officers and 54 enlisted; armament one twin bow-mounted 40mm gun and four single 20mm mounts; capacity 5 medium or 3 heavy tanks, or 6 LVTs, or 9 DUKWs; diesel fuel capacity 1,225 Bbls; troop accommodations 2 officers and 46 enlisted; 10-lb STS splinter shield to gun mounts, pilot house, and conning station; endurance 4,900 miles at 12 kts; propulsion two Fairbanks Morse model 38D81/8X10 reversible diesel engines with hydraulic clutch, direct drive, 1,440 BHP each at 720 rpm, twin propellers, 2,800 shp; ship's service generators two diesel-drive 100kW 450V AC and one diesel-drive 20kW 120V DC.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-02

   Study period

   1944-1946

   Population

   Ship's company and embarked troop capacity

   Limitations

   Supports dimensions, complement, armament, capacity, and diesel propulsion only. It does not identify asbestos-containing components or establish that any listed machinery insulation, gasket, packing, electrical insulation, brake lining, or deck covering contained asbestos.

   Atlas source

   true

   Evidence ID

   ev-uss-lsm-86-lsm86-04

5. [5]histarmar.com.ar (Fundacion de Historia y Arqueologia Maritima), 'ListGralBuques900a2003' general vessel list - Argentine Navy entries [other_primary]

   Locator

   Archived copy (2015-03-17 capture), table rows for BDM N 2 (Q-70) and CORRIENTES (Q-70)

   Finding type

   vessel_history

   Finding

   The Argentine naval-history registry list records: 'BDM N 2 | Q-70 | Buque de Desembarco de materiales | USN LSM 86 | 1948-1968' and 'CORRIENTES | Q-70 | Apoyo Minador | ex BDM N 2 | 1968-1972' - establishing that ex-LSM-86 served the Argentine Navy as landing ship BDM N 2 (pennant Q-70) 1948-1968, then as minesweeper-support ship Corrientes (Q-70) 1968-1972.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-02

   Study period

   1948-1972

   Population

   Argentine Navy crews (1948-1971)

   Limitations

   Argentine registry-level corroboration of the foreign-naval career and pennant continuity (Q-70 through both designations); it provides no asbestos, material, or condition content. The cited copy is archived because live histarmar.com.ar was unreachable (connection failed) this session. The '1948-1968'/'1968-1972' spans corroborate NavSource's 1968-69 conversion window and resolve the NavSource 'circa 1951' Corrientes photo caption as misdated (see gaps).

   Atlas source

   true

   Evidence ID

   ev-uss-lsm-86-lsm86-06

6. [6]Era inference built on: NavSource specification block (Fairbanks Morse diesel plant, this hull); Corn & Starr 1987 WWII-shipbuilding asbestos documentation (ev-09); GAO HRD-80-2 Navy asbestos-era program documentation (ev-10) [other_primary]

   Locator

   NavSource specifications block; synthesis of ev-09 and ev-10 era documentation

   Finding type

   asbestos_application

   Finding

   A diesel-powered LSM-1-class landing ship built in 1944 sits inside the documented WWII-era U.S. naval shipbuilding asbestos-use period. Era-standard application categories aboard a diesel amphibious hull of this type and period were machinery and exhaust thermal insulation/lagging, gaskets, valve packing, electrical insulation, winch/windlass brake linings, and deck covering. As a diesel ship she carried no steam plant - the boiler/steam-line lagging pathway of steam vessels does not apply.

   Verification

   inferred

   Role

   context

   Documentation level

   class_or_era

   Accessed

   2026-10-02

   Study period

   1944-2004

   Population

   Brown Ship Building construction trades (1944); USN crew (1944-46); Argentine Navy crew and 1968-69 conversion workers; Paraguayan Navy crew (1971-1995); breakers (2003-04)

   Limitations

   Class/era inference only - no hull-specific insulation survey, material list, outfitting specification, or work package located for LSM-86. Names era-standard application categories, not confirmed installed materials. No quantity, no manufacturer attribution for this hull, no present-day or end-of-service presence claim.

   Atlas source

   true

   Evidence ID

   ev-uss-lsm-86-lsm86-08

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

   AJIM 11(3):359-373, abstract and article

   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 program under which this LSM-1-class hull was mass-produced in 1944 - and that wartime demand drove unprecedented asbestos utilization in ship construction.

   Verification

   verified

   Role

   context

   Documentation level

   class_or_era

   Accessed

   2026-10-02

   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 or this yard 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-uss-lsm-86-lsm86-09

8. [8]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979; publicly released Oct 22, 1979) [gao]

   Locator

   GAO product page HRD-80-2, Highlights section - verified via archived copy https://web.archive.org/web/20240227044746/ (live gao.gov returns HTTP 403 to automated fetch)

   Finding type

   gov_survey

   Finding

   GAO reviewed the Navy's efforts to protect workers from asbestos exposure (fieldwork at the Long Beach and Norfolk Naval Shipyards), covering 'the use of asbestos in Navy ships, the cost of removing asbestos from Navy ships, and compensation programs for asbestos-related disabilities.' Per the report highlights, the Navy's 1975 policy was to remove and replace with nonasbestos materials only insulation that was damaged or had to be removed to accomplish necessary repairs, modified in 1979 to include selectively replacing asbestos insulation in high-maintenance areas - establishing that asbestos insulation was in service aboard Navy ships of this hull's era and remained a managed material into the late 1970s.

   Verification

   verified

   Role

   context

   Documentation level

   class_or_era

   Accessed

   2026-10-02

   Study period

   1975-1979 policy window

   Population

   Navy shipyard workers; asbestos program review

   Limitations

   Program-level documentation; fieldwork yards were Long Beach and Norfolk - not Brown Ship Building or any LSM builder - so this is era/program context, not a hull or builder-yard finding. Product-page highlights verified via Wayback; the full-report PDF was not reviewed this session.

   Atlas source

   true

   Evidence ID

   ev-uss-lsm-86-lsm86-10

9. [9]Shipbuilding History (shipbuildinghistory.com), 'Brown Shipbuilding, Houston TX' yard page [other_primary]

   Locator

   Yard profile body text (verified live 2026-10-02); companion LSM table at http://shipbuildinghistory.com/smallships/lsm.htm lists 'LSM 86 | Brown SB | Houston TX | 13-Oct-44'

   Finding type

   historical_record

   Finding

   The builder yard is documented in the Shipbuilding History yard profile: Brown Shipbuilding was built in 1941 by George and Herman Brown at the junction of Green's Bayou and the Houston Ship Channel with $9 million from the Navy; its four-year output was 12 PCs, 32 LCI(L)s, 61 DEs, and 254 LSMs (359 vessels total); the yard was leased to Todd Shipyards Corporation in 1949 (operated as Todd's Houston Division until 1984), returned to Brown & Root as an offshore fabrication yard, sold piecemeal in 2004, and is now the Brown Shipbuilding Industrial Park.

   Verification

   verified

   Role

   context

   Documentation level

   context_only

   Accessed

   2026-10-02

   Study period

   1941-2004

   Population

   Brown Shipbuilding construction workforce (1941-1945); successor operators to 2004

   Limitations

   Builder-yard context only: documents that this hull was one of 254 LSMs mass-produced at a wartime emergency yard; the page contains no asbestos, insulation, or workforce-health content and does not establish conditions aboard this hull. The yard is absent from the Atlas shipyards.json dataset (carried in gaps).

   Atlas source

   true

   Evidence ID

   ev-uss-lsm-86-lsm86-11

10. [10]Source-review negative across the sources listed in the search ledger [other_primary]

    Locator

    search_ledger rows sl-uss-lsm-86-lsm86-01 through -13

    Finding type

    historical_record

    Finding

    No ship-specific asbestos documentation was located in the public sources reviewed: the live NavSource hull page, the official NHHC 1 May 1945 Pacific Fleet organization record, the Argentine histarmar registry list, the Shipbuilding History production table and yard page, and web-index sweeps contain no asbestos survey, insulation-material statement, abatement record, hazmat disclosure, or qualifying asbestos litigation record for LSM-86.

    Verification

    verified

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-10-02

    Study period

    2026-10-02

    Limitations

    A negative public-source finding is not proof that asbestos was absent. Non-digitized Navy, shipyard, reserve-fleet, Argentine, Paraguayan, and scrapping records may contain additional evidence; asbestos documentation therefore remains class_or_era.

    Atlas source

    true

    Evidence ID

    ev-uss-lsm-86-lsm86-12

11. [11]CourtListener API v4 via /Users/charlesfletcher/devin-prompts/cl-auth-search.py [court_record]

    Locator

    search_ledger rows sl-uss-lsm-86-lsm86-07 and -08 (completed, 0 results each) and -08b (docket sweep blocked by pacing)

    Finding type

    historical_record

    Finding

    The authenticated CourtListener searches completed 2026-10-02 returned zero indexed results: exact-name opinions for 'USS LSM-86' (HTTP 200, count 0) and hull-number opinions for 'LSM-86' (HTTP 200, count 0). The hull-number docket sweep (type=r) could not be completed: the required authenticated helper returned a fleet-wide pacing stand-down across three spaced attempts. No qualifying asbestos litigation record was located; the litigation sweep is partially complete, not a clean negative.

    Verification

    partial

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-10-02

    Study period

    2026-10-02

    Limitations

    The two completed opinion queries returned zero hits; the unrun docket sweep means this is a partial search result, not proof that no unindexed or non-text-linked case exists. Zero hits do not identify this vessel, its crew, or asbestos exposure aboard this hull.

    Atlas source

    true

    Evidence ID

    ev-uss-lsm-86-lsm86-13

12. [12]NARA catalog (catalog.archives.gov), NVR (navsea.navy.mil / nvr.navy.mil), NHHC DANFS index - access-status survey [other_primary]

    Locator

    search_ledger rows sl-uss-lsm-86-lsm86-05, -06, -09

    Finding type

    historical_record

    Finding

    Undigitized archival tracks remain open: NARA RG 24 deck logs for the 1944-1946 commission are presumed extant but were not located in digitized public sources (the NARA catalog API returned only the JS application shell to scripted queries); the NVR excludes pre-1987 disposals and its sites were unreachable (403/000) this session; and no NHHC DANFS or ship-history page exists for this numbered hull.

    Verification

    partial

    Role

    archival_lead

    Documentation level

    ship_specific

    Accessed

    2026-10-02

    Study period

    2026-10-02

    Limitations

    Access-status findings, not content findings: deck-log and registry materials may exist but were not reviewable this session. None of these sources was searched to completion; their contents cannot be characterized.

    Atlas source

    true

    Evidence ID

    ev-uss-lsm-86-lsm86-14

13. [13]NavSource Online, Amphibious Photo Archive, USS LSM-86 hull page [other_primary]

    Locator

    Hull page: flotilla/group/division assignment, Asiatic-Pacific Campaign table, occupation/China service table, awards ribbon display

    Finding type

    vessel_history

    Finding

    During World War II, USS LSM-86 was assigned to the Asiatic-Pacific Theater with LSM Flotilla Nine (CDR. D. L. Francis, USN), LSM Group Twenty-Five (LCDR. L. Brouwer, USN), and LSM Division Forty-Nine, and participated in the Okinawa Gunto operation - assault and occupation of Okinawa Gunto, 26 March to 30 June 1945 - earning one battle star. Postwar she was assigned to Occupation and China service in the Far East, 2 September to 4 November 1945 (Navy Occupation Service Medal and China Service Medal, extended).

    Verification

    verified

    Role

    supporting

    Documentation level

    ship_specific

    Accessed

    2026-10-02

    Study period

    1944-1945

    Population

    Ship's company and Okinawa operating personnel

    Limitations

    Establishes theater assignment, the Okinawa operation, and the stated medal windows; it is not a complete voyage narrative and does not establish asbestos content or exposure. The division number conflicts with the official NHHC 1 May 1945 organization document (Division 50 there vs Forty-Nine here) - see ev-03 and gaps.

    Atlas source

    true

    Evidence ID

    ev-uss-lsm-86-lsm86-02

14. [14]NavSource Online, Amphibious Photo Archive, USS LSM-86 hull page [other_primary]

    Locator

    Hull page chronology: decommissioning, strike, sale, and Argentine transfer lines

    Finding type

    vessel_history

    Finding

    USS LSM-86 was decommissioned 4 March 1946 at Terminal Island Navy Yard, San Pedro, California; struck from the Naval Register on a date recorded as unknown; and sold 17 February 1948 to Clark Sales Co., Pittsburgh, Pennsylvania, which resold her to Argentina on 10 September 1948, where she was redesignated ARA BDM No. 2.

    Verification

    verified

    Role

    supporting

    Documentation level

    ship_specific

    Accessed

    2026-10-02

    Study period

    1946-1948

    Population

    Decommissioning crews at Terminal Island Navy Yard (1946); disposal/sale handlers (1948)

    Limitations

    Establishes decommissioning, the unknown strike date, and the 1948 sale/transfer chain; no shipbreaking, hazmat, or asbestos record is supplied. The unknown strike date is carried in gaps; the second commanding officer (Lt.jg. Warren E. Stancl, Dec 1945 - 4 Mar 1946) is listed on the same page.

    Atlas source

    true

    Evidence ID

    ev-uss-lsm-86-lsm86-05