USS Clamagore (SS-343)

Name
USS Clamagore
Hull designation
SS-343
Vessel class
Balao
Evidence tier
Tier 2
Evidence entries
9
Record ID
uss-clamagore-ss343
Dataset version
2026.10.12-rc.1
Canonical URL
https://asbestosatlas.org/ships/uss-clamagore-ss343

Evidence

9 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-9).

  1. [1]DANFS, Clamagore (SS-343) - verbatim transcription at losthistory.net/hazegray mirror (live NHHC DANFS page returned HTTP 404) [nhhc_danfs]
    Locator
    DANFS service narrative and spec block
    Finding type
    vessel_history
    Finding
    Documented for this hull: launched 25 February 1945 by Electric Boat Co., Groton (sponsor Miss M. J. Jacobs); commissioned 28 June 1945, Cmdr. S. C. Loomis, Jr. Key West base from 5 September 1945 with Fleet Sonar School operations to Cuba and the Virgin Islands; entered Philadelphia Naval Shipyard 5 December 1947 'for modernization and installation of snorkel,' returning to Key West 6 August 1948; eight years of local/Caribbean operations with a Mediterranean tour Feb-Apr 1953; NATO North Atlantic exercises Sep-Dec 1957 (Portsmouth, Argentia); Charleston home port from 29 June 1959; 6th Fleet Mediterranean tour Apr-Jul 1960; east-coast operations for the remainder of 1960.
    Verification
    verified
    Role
    context
    Documentation level
    ship_specific
    Accessed
    2026-09-18
    Study period
    1944-1975
    Population
    EB construction trades (1944-45); PNSY conversion-yard trades (1947-48; 1962); crew (1945-1975)
    Limitations
    Ship-specific history only; no asbestos or material content. Live NHHC page 404s; verbatim hazegray transcription used. The DANFS spec block lists class as 'Gato' - the hull is Balao class (DANFS spec blocks genericize the class label).
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-01
  2. [2]NPS National Historic Landmark Withdrawal of Designation Report, USS Clamagore (SS 343) (NPS Form 10-900; designated 29 June 1989, withdrawn 2 September 2024) [nps]
    Locator
    Withdrawal report sections: Significance, Condition, Justification
    Finding type
    historical_record
    Finding
    The NPS withdrawal report documents: commissioned 28 June 1945, decommissioned 12 June 1975; one of 132 Gato/Balao/Tench-class war-built submarines; modified in 1947 into a FRAM II configuration and again in 1962 into a GUPPY III - one of only nine GUPPY III conversions and the only surviving GUPPY III submarine in the United States; on display at Patriots Point since 1981; severe outer-hull corrosion closed her to visitors in 2021; a large main-ballast-tank leak required regular air pumping; batteries began leaking contaminants into the water; the Navy granted Patriots Point disposal approval in 2019 (Section 106 via Program Comment); South Carolina funded scrapping in 2021; all superstructure components and 504 batteries were removed before towing to Norfolk, VA on 14 October 2022; 'dismantled and recycled for scrap,' ceasing to meet NHL criteria (36 CFR 65.9(b)(1)).
    Verification
    verified
    Role
    supporting
    Documentation level
    ship_specific
    Accessed
    2026-09-18
    Study period
    1945-2024
    Population
    Museum visitors and maintenance staff (1981-2022); scrapping-yard workers (2022-23)
    Limitations
    Ship-specific federal record of condition and disposal. Documents battery removal and contaminant leakage - no asbestos or other material characterization; the 'FRAM II' label for the 1947-48 yard period differs from the usual GUPPY II nomenclature for that conversion (noted, not reconciled).
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-02
  3. [3]NPS National Historic Landmarks program page - USS Clamagore (SS 343) [nps]
    Locator
    NPS NHL program page (designation + withdrawal notice)
    Finding type
    historical_record
    Finding
    The NPS program page confirms: NHL designated 29 June 1989; designation withdrawn 2 September 2024 'because it had ceased to meet the criteria for designation'; the vessel suffered severe hull wasting, was closed to the public after a main-ballast-tank leak in December 2021, and was towed to Norfolk, VA on 14 October 2022 for the final stage of the scrapping process. Owner: State of South Carolina (Patriots Point Naval and Maritime Museum).
    Verification
    verified
    Role
    supporting
    Documentation level
    ship_specific
    Accessed
    2026-09-18
    Study period
    1989-2024
    Population
    Museum visitors and staff (1981-2022)
    Limitations
    Administrative designation/disposal record; contains no asbestos or material information.
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-03
  4. [4]Robbins v. Air & Liquid Systems Corporation et al., M.D. Fla. No. 8:23-cv-01723 (filed 2023-08-03) - Second Amended Complaint, ECF No. 37 [court_record]
    Locator
    M.D. Fla. 8:23-cv-01723, ECF No. 37 (SAC); UniCourt docket listing
    Finding type
    litigation_documented
    Finding
    The Second Amended Complaint (ECF No. 37) in Robbins v. Air & Liquid Systems Corp. et al. (M.D. Fla. 8:23-cv-01723) names USS Clamagore, SS-343, alleging the plaintiff served aboard in 1960-1963 as an engineman and was exposed to asbestos while removing and replacing asbestos-containing products and working near others doing the same. Pleading-stage allegation only - the least-final litigation stage; no product identification, discovery record, or adjudicated exposure finding located. Docket existence independently confirmed via UniCourt/PACER-monitor listings (8:23-CV-01723, filed 2023-08-03).
    Verification
    partial
    Role
    supporting
    Documentation level
    ship_specific
    Accessed
    2026-09-18
    Study period
    1960-1963 (alleged); litigation 2023-
    Population
    Plaintiff engineman (alleged 1960-1963 service aboard); contemporaries
    Limitations
    A complaint's vessel allegation is an allegation, not a finding - no adjudication of exposure, product, causation, or damages. Complaint-text detail is carried from the class-profile's prior extraction of ECF No. 37; the ECF document itself could not be re-fetched this session (CourtListener returned HTTP 403/429) - docket-level verification is recorded, document-level re-verification pending.
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-04
  5. [5]NavSource Online Submarine Photo Archive, Clamagore (SS-343) data block (keel, decommission/stricken dates, reclassifications, final disposition) - secondary compilation, not an official Navy source [other_primary]
    Locator
    NavSource Clamagore (SS-343) data block (Wayback capture; navsource.net unreachable by direct fetch)
    Finding type
    vessel_history
    Finding
    NavSource data block: laid down 16 March 1944 at Electric Boat Co., Groton; converted to a GUPPY-type submarine in 1948; decommissioned 12 June 1975; struck from the Naval Register 27 June 1975; donated as a museum ship at Patriots Point, Charleston, SC from 11 May 1981; a 10 January 2017 Palm Beach County vote approved funding to reef the vessel (plan later superseded by scrapping per NPS).
    Verification
    partial
    Role
    context
    Documentation level
    ship_specific
    Accessed
    2026-09-18
    Study period
    1944-2022
    Population
    Crew (1945-1975); museum visitors (1981-2021)
    Limitations
    The 2017 reefing vote was superseded by the 2022 scrapping documented by NPS. NavSource is a volunteer-maintained photo archive, not an official record; post-service dates await NVR/NHHC confirmation (pre-1987 disposals are absent from the public NVR by its own notice). No asbestos content.
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-05
  6. [6]Bureau of Ships, Ships' Data, U.S. Naval Vessels, Vol. 1 (Jan 1945), submarine machinery tables (shipscribe.com scan) + Balao class profile (class-f/balao-class.class.json) + shipyard-exposure-map product list for electric-boat-groton [other_primary]
    Locator
    SDB1945v1 submarine tables; class-f/balao-class.class.json; shipyards.json electric-boat-groton
    Finding type
    asbestos_application
    Finding
    Balao-class diesel-electric boats carried NO boilers or steam plant (BuShips 1945: DERD drive, four main diesel-generator engines, 5,400 hp, two shafts). Era-typical asbestos-relevant applications on the type: diesel exhaust lagging, engine gaskets and packing, acoustic and thermal hull insulation, insulation around galley and refrigeration equipment, and battery/electrical materials. The Electric Boat/Groton yard's asbestos product use in submarine construction of this era is independently documented at the yard level.
    Verification
    inferred
    Role
    supporting
    Documentation level
    class_or_era
    Accessed
    2026-09-18
    Study period
    1943-1975 (era)
    Population
    EB construction trades (1943-45); era yard and crew trades
    Limitations
    Class/era inference only - no hull-specific insulation survey or material list located for SS-343. Names era-standard applications, not confirmed installed materials; establishes no quantities and no exposure for any individual.
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-06
  7. [7]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
    Locator
    GAO product page HRD-80-2 (full text blocked, HTTP 403)
    Finding type
    gov_survey
    Finding
    GAO documented that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s - spanning this hull's service and yard periods (1945-1975).
    Verification
    verified
    Role
    context
    Documentation level
    class_or_era
    Accessed
    2026-09-18
    Study period
    1979
    Population
    Navy shipyard workers; asbestos program review
    Limitations
    Program-level documentation; supports era context only, not any fact specific to this hull. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403) - content via product-page description.
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-07
  8. [8]Post and Courier (Charleston, SC), 14 October 2022 - 'Navy submarine Clamagore towed from Patriots Point to be scrapped' [reputable_press]
    Locator
    Post and Courier, 14 Oct 2022 news article
    Finding type
    vessel_history
    Finding
    Contemporary reporting of the 14 October 2022 tow documents that crews had removed materials from the submarine since August, including 504 batteries and the sail, before the five-day tug voyage to Norfolk for recycling - corroborating the NPS disposal account and adding the sail removal.
    Verification
    verified
    Role
    context
    Documentation level
    ship_specific
    Accessed
    2026-09-18
    Study period
    2022
    Population
    Scrapping crews; museum staff (2022)
    Limitations
    Press corroboration of the disposal already documented by NPS; contains no asbestos characterization - 'materials removed' and battery counts are disposal logistics, not abatement records.
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-08
  9. [9]Batch-25 search ledger (this record): DANFS transcription; NavSource data block; CourtListener index sweep; BuShips Ships' Data 1945; GAO HRD-80-2; NVR coverage notice; hull-specific official sources as logged [other_primary]
    Locator
    search_ledger rows sl-uss-clamagore-ss343-01 through end
    Finding type
    historical_record
    Finding
    Apart from the ship-named Robbins pleading allegation (ev-uss-clamagore-ss343-04, unadjudicated), no qualifying ship-specific asbestos record located for CLAMAGORE (no asbestos survey, abatement contract, hazmat disclosure, HAER documentation, museum disclosure, or adjudicated case naming this hull was found in the public sources searched; see search_ledger).
    Verification
    verified
    Role
    negative_finding
    Documentation level
    ship_specific
    Accessed
    2026-09-18
    Study period
    2026-09-18
    Limitations
    Absence of a located public record does not prove absence of asbestos aboard - era materials may have been installed and later removed or retained undocumented. Does not establish that asbestos is or is not present; does not establish or defeat any claim of exposure or legal eligibility.
    Atlas source
    true
    Evidence ID
    ev-uss-clamagore-ss343-09

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