ISO rules (CE) - High-speed craft seats requirement

Discussion in 'Class Societies' started by ToMeK, Jan 9, 2023.

  1. ToMeK
    Joined: Nov 2006
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    Location: Zagreb, Croatia, Europe

    ToMeK Young naval architect

    Hello everyone,

    I am designing planing craft that will achieve speeds of 50 knts.
    Does anyone know if there are any requirements for seat type and/or following requirements for hand holds etc for such high-speed boats?
    In earlier projects I remember there were flag demands that over 20knts every passenger must have seat, over 35 must be seated and facing forward, over 45 jockey seat or extra hand hold.

    If such exists could you please name the standard that requires such safety solution?


    Kind regards,

  2. Alik
    Joined: Jul 2003
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    Alik Senior Member

  3. Ad Hoc
    Joined: Oct 2008
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    Location: Japan

    Ad Hoc Naval Architect

    That also depends upon the type of vessel. You only state it is a planing vessel doing 50knots.
    So the type of vessel will also influence the requirements from Flag state.

    As it may also lead to where the vessel will operate, as the local Flag state may require heave damped seats too, against WBV.
    There are EU laws for this.

  4. darkstar71
    Joined: Jan 2016
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    Location: United Kingdom

    darkstar71 powered by understanding

    Hi Tom,
    I guess you do not have any specifications, otherwise, you could look into it. Probably, there is no requirement from the owner too. Have you checked with classification guideline or recommended practices from DNV for high speed craft? To my understanding, the requirement may related to slamming force (magnitude and frequency) and vertical acceleration. Furthermore, you can search for ISO standard related to high speed planning craft, too. Good luck.
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