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Thread: catamarans & nacelle pod propulsion

  1. #1

    Default catamarans & nacelle pod propulsion

    I recently launched a new 'wharram type' cat. It's powered by an outboard mounted in a central nacelle pod, about 2/3's of the way back from the bows. Even though the outboard cavitation plate is 20 cm below the static waterline, the propeller still sucks air and cavitates when running at speed.

    I'm considering a prop guard/kort nozzle kind of attachment around the prop to contain the thrust, but questioning whether it'll do any good.

    Any insight you may have would be greatly appreciated

  2. #2

    Default Re: catamarans & nacelle pod propulsion

    Quote Originally Posted by oceansurfer View Post
    I recently launched a new 'wharram type' cat. It's powered by an outboard mounted in a central nacelle pod, about 2/3's of the way back from the bows. Even though the outboard cavitation plate is 20 cm below the static waterline, the propeller still sucks air and cavitates when running at speed.

    I'm considering a prop guard/kort nozzle kind of attachment around the prop to contain the thrust, but questioning whether it'll do any good.

    Any insight you may have would be greatly appreciated
    What size of boat outboard?

  3. #3
    Join Date
    Oct 2008
    Location
    Brisbane Australia
    Posts
    1,154

    Default Re: catamarans & nacelle pod propulsion

    Thgis thread is locked, people are redirected to a duplicate thread at

    This thread over here, there it is

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