23 powercat plan

Discussion in 'Boat Design' started by fano, Jun 29, 2019.

  1. fano
    Joined: Jun 2019
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    fano Junior Member

    Hello I'm french so sorry my bad english. I want to build a 7 or 8 metre (23') powercat plywood and fiberglass (not alloy). I'm looking for a similar plan to Bruce Harris' shark cat (or Famous Australian Noosacat style). I have already seen a lot of plan on the web (glen.l, skooda ...) and my choice is on the stormcat 23 but the plan is a bit old. I was wondering if there were other plans similar to stormcat 23, maybe newer or powercat designers that I could contact. Thank's for your help
     
  2. Mr Efficiency
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    Mr Efficiency Senior Member

  3. scape
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    scape Junior Member

    Last edited: Jun 30, 2019
  4. Mr Efficiency
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    Mr Efficiency Senior Member

    Might be better off shipping an old Sharkie out there, there was a bloke sending a few second hand ones out to Vanuatu. Unless you are wanting room for a lot of people, the more common 18 footer (560) will do the same job, with aplomb. Trouble is they are getting long in the tooth.
     
  5. fano
    Joined: Jun 2019
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    fano Junior Member

    Thank you for your answers. I had already seen the boatdesign forum on the stormcat / wildcat / skoda .... and also the spirit but my preference is stormcat. Here is 3 pictures of the stormcat but aluminium version. He looks great.

    upload_2019-6-30_16-12-41.png

    upload_2019-6-30_16-24-24.png
    upload_2019-6-30_16-26-3.png

    Si I have some questions about building
     

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  6. fano
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    fano Junior Member

    First : as the wildcat (glen-L), there is a cushion of air compressed within the tunnel that adds to lift for quick acceleration while softening the ride. Can I remove this air cushion and therefore the holes in the bulkheads can be removed in order to make watertight partitions for more security in case of waterway (I hope I'm clear because of my very bad english).
     
  7. Mr Efficiency
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    Mr Efficiency Senior Member

    That "cushion" is a reference to compression of air within the tunnel, nothing to do with the internal structure of the boat. Having now seen the pics of the Stormcat, I'd say it looks OK to me, if it can be made in plate, it could be adapted to ply construction if needed.
     
  8. fano
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    fano Junior Member

    Ok, so do you know why are there Holes in the wildcat bulkeads please ?
    upload_2019-6-30_17-4-42.png
     
  9. Mr Efficiency
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    Mr Efficiency Senior Member

    Saving some weight, improving air circulation perhaps, Your best plan for flotation would be to fit blocks of polystyrene foam during the build, not use pour form.
     
  10. fano
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    fano Junior Member

    thank you
     
  11. Mr Efficiency
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    Mr Efficiency Senior Member

    Certainly think the Stormcat is the right shape for the job, It is similar to the 23 Sharkcat, but without the flat along the demi-hull centrelines, which was probably designed that way to drive on and off the trailer easily, as much as anything else.
     
  12. Bullshipper
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    Bullshipper Bullshipper

    I looked at the ads after seeing your post and man, are used cats sure expensive in Au
     

  13. Bullshipper
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    Bullshipper Bullshipper

    Aluminum cats are very expensive to build. The material, labor and equipment you use is expensive and there are 100's of feet of welds that have to be done on both sides. It took 2 years for 2 guys to do a 28 working almost every afternoon, and that came cnc cut ready to weld.
     
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