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Gamefishing for Sail Under Sail (and power)

Discussion in 'General Catamaran Discussion' started by brian eiland, Jul 28, 2004.

  1. cranky

    cranky New Member

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    Brian

    I have been reading through your stuff. Interesting, nearly put me to sleep with all those words but the ideas were there. ;)

    Fishing under sail nothing new about that people have been successfully fishing under sail for thousands of years. Just they didn't turn it into a professional sport. And I can only applaud you on having the balls to design a vessel to do just that.

    But I have to ask why the wierd rig that will undoubtedly at some point in time break. I can see at a glance at least 3 places where the loads must be incredable to keep the thing up while under sail. To sail this rig in 15 to 20 in any direction the loading on the mast base and back stays must be off the planet. I can only imagine that if the rig stayed together then the hulls and or cross beams must bend and twist like crazy. Even on a conventional rig this can be a major issue.

    Now If I were to be designing a vessel to carry out this task I would be looking at the "freedom 40" as my starting point, a medium displacment mono hull with a free standing ketch rig and wishbone booms fitted with lazy jacks. Or maybe take it to trimaran with a similar rig, I do not belive that you could make it structurely sound on a cat.

    Looking forward to the replies.
  2. brian eiland

    brian eiland Senior Member

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    Sorry about that, I'm not a particularly good writer, I realize that

    Actually I was working on a Motor/Sailer design back in '89,'90 when Lock Crowther was begining work on the TaraVana design. That prompted me to consider a little more engine power and that older mainsail-less rig design of mine.

    The key word was NO Mainsail. As I point out on my website, "I'm well aware that once a large gamefish is hooked, the vessel must get rid of all sail quickly, with minimum effort, and get under power."

    Can't get into defending the rig design at this time, nor on this forum. If you care to look at the aerodynamics of the situation and some of the loading discussions I can point you to numerous discussions on another forum

    Interesting that you bring this 'free standing' subject up right now. Wait a few weeks and I will surprise you with a new design I'm working on right now;) I promise you will find it very interesting.

    In the meantime did you notice this free-standing ketch referenced above in posting #32. Opps,the link was wrong, here is new one, http://www.hybridfishingboat.org
  3. cranky

    cranky New Member

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    Look forward to seeing your new drawings
  4. brian eiland

    brian eiland Senior Member

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  5. brian eiland

    brian eiland Senior Member

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    Fishing Under Sail (Alternatives)

    Well here's a new variation ;) :rolleyes:

    These guys in Hawaii are fishing under a new 'form of sail'....kite sails to be more specific.
    http://kiteforsail.com/index.htm

    (I thought I might add this posting to this subject thread as it originally proposed this fishing under sail subject, but in reality this kite sail subject probably best fits under this "New Age Kite-Assisted Power Yacht" subject.)

    Attached Files:

  6. brian eiland

    brian eiland Senior Member

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    Atwarthships Fishing Deck

    Been talking with a gentleman who really likes sportfishing, and who really likes the 'stayless rig' (dynarig) concept, that further eliminates interference with any extra rigging lines.

    But he also desires a relatively 'one level fishing deck' across the beam of the vessel. So here is a rough sketch of a modification to the 'elevating' fishing chair deck on the dynarig cat

    Attached Files:

  7. brian eiland

    brian eiland Senior Member

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  8. brian eiland

    brian eiland Senior Member

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    Returning to Sail Power

    What was that Chinese quote, "May you live in interesting times" ?
  9. brian eiland

    brian eiland Senior Member

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  10. SailMore

    SailMore New Member

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    If that boat is motor powered, then how would they catch fish from the back? Wouldn't the disruption of sound and waves right there keep any fish from even approaching that portion of the boat?
  11. brian eiland

    brian eiland Senior Member

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    Going Where the Fish Are

    Looking thru the latest June issue of Boat International USA, I found this little dissertation on finding gamefish a bit further offshore than normally considered (attached a scan of "Going Where the Fish Are").

    This issue also contained a nice little section on gamefishing designs, including some history and some new designs. I was a bit disappointed to see most of the new designs basically being 'reruns' of the same old theme that's existed for the past 40 years or so...just bigger and more horsepower. Where is some real innovation?

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  12. brian eiland

    brian eiland Senior Member

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    Noise and Fishing

    A subject that is always highly debated, I just happened upon this subject thread this evening.
    Which Boat/Engines raises fish best?
    http://www.marlinnut.com/forums/t2142/
  13. brian eiland

    brian eiland Senior Member

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    New Zealand fishing / sailing vessel

    A gentleman on another forum who knows of my efforts to promote this idea of 'fishing under sail' just brought this website to my attention tonight. looks sort of like my rig, but not quite the same.

    Hope it gets built.

    http://www.kansaifishing.co.nz/

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  14. brian eiland

    brian eiland Senior Member

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  15. brian eiland

    brian eiland Senior Member

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  16. brian eiland

    brian eiland Senior Member

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    I was surfing thru some forum discussions for a particular sportfishing vessel [monohull even :rolleyes:], and I ran across this posting from a couple years ago. ...thought it was rather applicable to this new fuel cost world...

    ...couple of other interesting observations by this gentleman over here:
    http://www.boatdesign.net/forums/boat-design/future-sportfisherman-looks-like-past-21289-4.html
  17. brian eiland

    brian eiland Senior Member

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    Retractable Platforms

    Another observation by Plankton:

    Your multi-hulls are extremely interesting and I think your designs are pretty much spot on. I also agree that a trimaran, though not as maneuverable as a twin-engined cat, could well do the job. Inherently, there is much to be said for three hulls as against two.

    However, might I suggest that large billfish (in particular) are more commonly (and preferably) handled alongside a vessel, not athwartships across the transom. Two overriding concerns by a diligent crew who release their fish are (1) to keep the fish swimming into a flow of water thus ensuring an oxygenated supply of water, and (2) to keep the fish out of the props. When a large billfish is on the leader it can characteristically surge forwards, often in sympathy with the pull of leader. If at the back of the boat, this will often lead a fish into the props, particularly if the fish is aqua-planing with pectoral fins rigidly outstretched. Might I respectfully suggest a retractable steel-rung platform, as used on board tuna pole-boats, that can be lowered outboard alongside the stern sections of the hull in the closing stages of a battle with a fish ? It could do double duty as a boarding/dive platform and tender-berth at anchor.

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  18. brian eiland

    brian eiland Senior Member

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    I was recently looking at transom step arrangements and happened across this variation on a Leopard 47 catamaran....doable fishing arrangement.

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  19. brian eiland

    brian eiland Senior Member

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    Ketch Rigged Vessels,...Deketchification of America

    I just happened across this great new word, 'Deketchification' :confused::D
    What a great word.

    And of course what drew me to investigate was my long term interest in ketch rigged sailing vessels.

    The PDF was a little bit too large to attach on this forum, so I'll try a JPG image:

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  20. brian eiland

    brian eiland Senior Member

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    65' Sportfish Catamaran by Paul Lindenburg

    I was just doing a little search for another vessel this morning, and happened across this rig. I knew the designer Paul Lindenburg, but never realized he did this custom design.

    I've only read the first page of this discussion, but the engine experiements sound interesting.

    65' Power Catamaran - $175,000 - The Hull Truth - Boating and Fishing Forum

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