Tanker proa

Discussion in 'Multihulls' started by Konstanty, Apr 18, 2016.

  1. Konstanty
    Joined: Mar 2016
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    Konstanty Junior Member

    Attached Files:

  2. NoEyeDeer
    Joined: Jun 2010
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    NoEyeDeer Senior Member

    I think they should lay off the acid.
     
  3. Tom.151
    Joined: Jul 2009
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    Tom.151 Senior Member

    Any sentence with the word combination "tanker proa" should really be treated as a spam post and automagically deleted, pictires and all. Just saying.
     
    rwatson likes this.
  4. paxfish
    Joined: Dec 2014
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    paxfish Junior Member

    I think it is just a....


    proatotype!
     
  5. Mr Efficiency
    Joined: Oct 2010
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    Mr Efficiency Senior Member

    I thought it was a "pranker proa", but apparently not.
     
  6. Spiv
    Joined: Jun 2007
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    Spiv Ancient Mariner

    That is actually quite an interesting rig, would love to understand it better.
    I got in touch with the inventor and asked him if he thinks it could be adapted to 'cruising' cats.
    Will let you know how it develops.
     
  7. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    You've got to be kidding is my first thought, but more disappointing is that someone thinks this might be interesting. The web site says it managed 4 knots in tank testing, but then it said "In addition to speeds higher than conventional engines the proa adds greater stability through a wider footprint." Well spank my asss, but don't tankers run 15 to 20 knots? I'm sure they thought about bridges when they designed that 200' tall rig, right? Not to mention sweeping all the other shipping channel traffic aside with the 250'+ wide beam. I guess they retract the proa going through canals?
     
  8. Ad Hoc
    Joined: Oct 2008
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    Ad Hoc Naval Architect

    250foot beam..is that all??....can't beat a 125m (407foot) beam to get through those narrow canals ;)

    Pioneering Spirit.jpg

    Pioneering Spirit...wonderful bit of engineering :D
     
  9. CT249
    Joined: May 2003
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    Location: Sydney Australia

    CT249 Senior Member

    Tankerproa is way, way too conservative. There is a much neater alternative that is simpler and offers far more performance - Tankersurfer (TM).

    Tankersurfer (TM) uses a giant freestanding rig, like that of a windsurfer. It has a large transverse arm coming off the windward wishbone. This contains water ballast in a powered pod. The water ballast pod slides along a track running on the transverse arm and takes the place of a human's weight on a normal windsurfer. Computers sensing rig forces and using doppler radar to sense windshifts move the pod along the track to ensure that the rig is always at the right angle so that it can "fly" like a normal windsurfer does, heeled to windward, without imparting heeling moment.

    Tankerproa has been tested in flat water; the Tankersurfer prototype sailed across oceans on testbeds as large as the model tanker, therefore proving that the concept works better than Tankerproa.

    [​IMG]

    Next move is the Foiling Tankersurfer - because too much BS is never enuff.
     
  10. Mr Efficiency
    Joined: Oct 2010
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    Mr Efficiency Senior Member

    The kite assist might be feasible.
     
    Jonathan hintzman likes this.
  11. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    In this era of political correctness, the crew may sue if the captain tells them to go fly a kite.
     
  12. Spiv
    Joined: Jun 2007
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    Spiv Ancient Mariner

    PAR, sarcasm doesn't help anybody.
    A comment like this only gives you an extra number in your 16,865 posts.
    Is that what you are chasing? Posts glory?

    If you are not interested in this thread, please just ignore it and go and write where you can make a useful contribution as you have done many times in the past.
     
  13. Konstanty
    Joined: Mar 2016
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    Konstanty Junior Member

    Until recently I heard on the radio that the example of the nonsensical statement is "Sailing submarine". Today, in the era of kites it is possible to imagine. Everything is changes
     
    Last edited: Apr 24, 2016
  14. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    You're right I'm not interested in this thread, as fools abound and anyone that thinks this remotely viable, clearly is a teenager that has yet to let go of mom's apron strings or uneducated on the various subjects necessary for understanding.

    After a decade and 1/2 of participation here, yeah, I have quite a few posts tallied up. No glory, just assistance and advice. I have no affiliation with this site, nor do I get anything in return for my contributions here. FWIW, sarcasm keeps everyone honest and tends to place the focus where it might appear, which in this case is easily justified as silly, more than deserving of it.

    Again, fools rush in, if you think that kite drive or assisted submarines are a reasonable and viable propulsion option. Maybe you should look up the train/submarine thread, but be prepared for some more sarcasm and foolish comments.
     

  15. upchurchmr
    Joined: Feb 2011
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    upchurchmr Senior Member

    PAR and Others,

    I appreciate your comments, especially for an absurdity like this one.

    Sometimes it is necessary to give a straight forward evaluation, other times it is just a waste of time.

    SPIV - not every input is valuable. It would be better to understand that right up front.
    If you would, please tell us how this has any possible value.
    After all, the OP didn't even say "I like this".
    So you are a group of 1 defending this.

    Defend away.

    Please start with the transverse stability of a tanker and why the proa rig is needed, compared to the loads provided by the rig that is the same height as the previous America's cup 70' cat rigs.
     
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