Tacking outrigger International Canoe
I have an IC in my fleet of boats, thinking of getting it on the water again and had this idea as I am not as fit as I was back in the day.
Could be an IC mod or new boat, sliding seat with floats on it, leeward float designed
to come nicely against the hull and act as a lee pod. Many IC’s have a seat carriage
that is a good eight inches high and the floats would be above the water line.
Tink
Would it not be easier to make a trimaran out of it? It seems simpler and more usable then two large movable amas? As a tri it should get a lot of righting moment, less heeling and a wide usable stable plattform when at rest.
With the right amas it could maybe even be faster then a stock IC?! (flying the vaka).
Cheers,
Johannes
Would it not be easier to make a trimaran out of it? It seems simpler and more usable then two large movable amas? As a tri it should get a lot of righting moment, less heeling and a wide usable stable plattform when at rest.
With the right amas it could maybe even be faster then a stock IC?! (flying the vaka).Cheers,
Johannes
Possibly, I was just thing of something to fit straight on the existing boat, may be for heavier winds
Tink
I have an IC myself and I must admit to having had similar thoughts. After thinking it through, I concluded that the added weight would make it very difficult to slide the seat through. Also the standard seat and carriage would probably not be up to taking the torsional loads and would probably need to be redesigned, if the amas were big enough to actually be useful. But I could be wrong!
The high performance of the IC, despite it’s modest sail area, is due to it’s long, narrow and relatively light hull. Adding extra weight (and windage) would be quite detrimental to it’s performance.
In some respects the IC is the ultimate flying proa. Because it is sailed in such a way that the ama is ALWAYS flying, it doesn’t actually need one, so it has been removed!
I have an IC myself and I must admit to having had similar thoughts. After thinking it through, I concluded that the added weight would make it very difficult to slide the seat through. Also the standard seat and carriage would probably not be up to taking the torsional loads and would probably need to be redesigned, if the amas were big enough to actually be useful. But I could be wrong!
The high performance of the IC, despite it’s modest sail area, is due to it’s long, narrow and relatively light hull. Adding extra weight (and windage) would be quite detrimental to it’s performance.
In some respects the IC is the ultimate flying proa. Because it is sailed in such a way that the ama is ALWAYS flying, it doesn’t actually need one, so it has been removed!
Very valid points Mal, I have the canoe and though I would love to put it through it’s paces I don’t think I can manage to commit enough time to re master it. I am also not getting any younger or as fit as I was. With the development canoes it is far move valuable (to me) than it’s resale value and so I just ponder what I could do with it.
I was only planning to add very small amas just to act as stabilisers
Tink
Hello Tink,
Good luck with your project. Instead of having outrigger hulls whose inboard profile matches that of the hull, why not use relatively slim symmetrical outriggers instead? If the leeward float is going to be above the waterline anyway, then hydrodynamic interference between the leeward float and the hull shouldn’t be an issue.
Attached are images of two designs that use such outriggers: the Solway Dory and the Triak:
Solway Dory - Accessories - Outriggers
The Triak - design and specifications
Cheers,
Paul
Very valid points Mal, I have the canoe and though I would love to put it through it’s paces I don’t think I can manage to commit enough time to re master it. I am also not getting any younger or as fit as I was. With the development canoes it is far move valuable (to me) than it’s resale value and so I just ponder what I could do with it.
I was only planning to add very small amas just to act as stabilisers
Tink
Colin Newman (UK IC and Foil Moth sailor) has just turned 70 and had a new development rules IC built for his birthday. I was 48 when I bought my IC. I went to the gym for a month before I started sailing it, just in case! I’m now 55. Yes, you do need to put some time into it. It took me a season to get the hang of it, but now it seems as easy as sailing a Laser, only much more fun!
Mal.
Mal
I have met Colin a few times, he is an inspiration, if I spend time in the gym rather than building stuff I would return my body to the one could sail the IC with ease. TP03 is the focus for the moment
Tink
Jim Luton built a lovely little tacking outrigger called One Legged Alien in the mid-90’s that was based on a sailing canoe, though not an IC. Food for thought.
That’s not a bad idea. To implement this on an IC, I would still use the sliding seat with the object of not relying on the ama to provide stability, just use the ama as a ‘training wheel’. The akas could be designed to slide onto the existing seat carriage rails, so no mods would need to done to the IC hull.
That’s not a bad idea. To implement this on an IC, I would still use the sliding seat with the object of not relying on the ama to provide stability, just use the ama as a ‘training wheel’. The akas could be designed to slide onto the existing seat carriage rails, so no mods would need to done to the IC hull.
Spot on what I had been thinking
Here’s a blog posting about a slim-line monohull that’s designed to have movable outrigger floats.
Adventures of Greg - Stability Solution Floats
Cheers,
Paul
Love this thanks
Tink