Monohull verses Multihull powersailers / motorsailers

Discussion in 'Motorsailers' started by brian eiland, Aug 8, 2004.

  1. Boat Design Net Moderator
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    Boat Design Net Moderator Moderator

    Guys, let's try and keep the thread on track please. It seems in the last few posts some pot shots have now been made both ways, so let's please try and leave it at that and not continue to reciprocate with more pot shots or insults as not much will come of that other than ruining the topic. Thanks for your understanding.
     
  2. sabahcat
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    sabahcat Senior Member

    All good with me:)
    Now where were we

     
  3. High Tacker
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    High Tacker Junior Member

    High Tacker www.damsl.com

    Wow, sabahcat, you really do have too much time on your hands. I had a look at your profile more than two hours ago and it said that you were online posting a reply to this thread, and then I went out to eat breakfast and now I'm back online and note that you finished your reply just a few minutes ago. I'm truly sorry if I've upset you so. Or, perhaps I should ask for pay for helping fill up your day? But you do seem to have just a bit of a sense of humor...well, assuming that you're not really serious about that crab claw sail...even though it does kinda go with the faggoty chartreuse stripe...but if you are serious about it, be fore-warned that such a high heeling moment will upset your teacup and might even bury the bows on your little powercat.

    FYI: I ain't a Kiwi, am from the U.S.A., Ms Slippi originally, and then California. With that perspective, I believe I can say with complete impartiality that New Zealand is paradise, kinda like northern California minus the people, and only fools leave here to go to Aussie ocker land.

    'bye 'bye bushman
     
  4. High Tacker
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    High Tacker Junior Member

    High Tacker

    Oops! Hello Boat Design Net Moderator. Sorry about the last few posts, and maybe it would be a good idea for sabahcat to put me on his ignore list...uh, which I've just now done to him.

    Cheers, High Tacker
     
  5. sabahcat
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    sabahcat Senior Member

    And once again, back to the thread

     
  6. High Tacker
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    High Tacker Junior Member

    High Tacker www.damsl.com

    Thanks to Brian Eiland for pointing out (just above here) some of the advantages of proa canted sail geometry possible on a catamaran. For more detail, see my post on that subject on page 15 of this thread:

    "Practical application of proa canted sail geometry on a motorsailer cat"

    Scroll down that page and you'll see some photos demonstrating ideal sail shape in very light airs.

    http://www.boatdesign.net/forums/mo...tihull-powersailers-motorsailers-4499-15.html

    "It is also advantageous in very light airs to have the (tacks of the) sails attached to the windward side and thus (the sails are) canted away from the wind so that they set into proper aerodynamic shape by the effect of gravity when there's not enough wind to lift them into shape. You remember when sailing a little dinghy, when there is very little wind you move your butt over to leeward to heel the boat a bit so that the sail will fall into shape. So in very light wind, as soon as I unfurl a sail I'm away, while all those vertically rigged boats have sails hanging like so much laundry, all drag, and going backwards. Also, my sails don't come flopping down in the lulls; they're already down and so maintain their shape, ready for the wind to come back."
     
  7. sabahcat
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    sabahcat Senior Member

  8. brian eiland
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    brian eiland Senior Member

  9. Fanie
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    Fanie Fanie

    Makes perfect sense.
    Which would be best -
    Motorised vessel with sails
    or
    Sailing vessel with motors ;)
     
  10. sabahcat
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    sabahcat Senior Member

    Depends on vessels intended purpose
    Amount of wind or lack of in area of operation
    Cost of fuel in area of operation
    Cost of rig and sail Vs Fuel
    Fuel economy of vessel
     
  11. brian eiland
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    brian eiland Senior Member

    Actually I thought it looked more like a smaller version of the 80-footer"Song Siagon"
    #206
    #207
     

    Attached Files:

  12. sabahcat
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    sabahcat Senior Member

    Nah
    Definitely Tennant
    Look at the wave cracker and the double canoe hullshape aft

    Song Saigon has none of those Tennant characteristics
    [​IMG]
     
  13. brian eiland
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    brian eiland Senior Member

    I was speaking more about her topsides and cabin appearance rather than the hull shape
     
  14. brian eiland
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    brian eiland Senior Member


  15. brian eiland
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    brian eiland Senior Member

    New to Yachting; 13 Million to spend

    I've just got to 'set the stage' for my uncoming posting for real nice powercat design. Here is how the subject came up over on another forum....and I've included the gentleman's first posting here as I'm sure there are others looking to accomplish the same cruising lifestyle...but granted with a lot less to spend :rolleyes:

    It appeared here, if you want to read that subject thread.
    http://www.yachtforums.com/forums/general-yachting-discussion/15706-new-yachting-13-million-spend.html
     
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