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, Papplewick pumping station, Nottingham, 21,22 April
Bournville June 2nd 2019, 10am
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Norwich MBC Submariners joint Model Boat weekend - 26/27th July
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.Model Boat Convention (Exhibition), 24,25 August

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. Bournville Dive-In (2) MBC, 15th September

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Barrow in Furness MBC regatta and submarine event, Sunday 22nd Sept 2019,10am

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    The Grondin a Naiade Class Submarine of 1904 (MMI December 2014)

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    david f
    david f
    AMS Treasurer

    Posts : 2014
    Join date : 2010-11-10
    Age : 68
    Location : Cumbria

    The Grondin a Naiade Class Submarine of 1904 (MMI December 2014)

    Post  david f on Sat Dec 13, 2014 9:30 am

    An interesting article here describing The French Grodin sub built by Rene Lefevre.  Interesting construction - all metal.
    The Naiades were interesting in that they were the first use of electric propulsion motors in combination with i/c engines. (The Hollands??)
    Rene uses a central ballast tank emptied by butane gas. He uses  a pendulum type level controller.

      Current date/time is Sat Feb 23, 2019 10:42 am