Trimarans of the Everglades Challenge 2013

[Manfred.pech]

In this years Everglades Challenge an interesting small unfinished trimaran was to be seen. Does anybody know anything about this boat (dimensions, results, experience, owner, builder) ??

 

[Petros]

looks like it was made from parts of an old beach cat of some type. he likely did not get much sleep the few days before this event trying to get it ready in time. I have been there and done that more than once.

 

[Manfred.pech]

I have been there and done that more than once.

Thank you, Petros. Do you think that the little trimaran above could be successful in EC ?

 

[Rumars]

to me it looks like the amas are carved out of XPS on a central ply stringer and the main hull is a stich&glue affair of the "coffin" type with a "box" keel.
found another photo on the web, I would aproximate something like 5x4m. Looking at it I can't help myself and just have to think someone fitted one of matt layden's designs like paradox with amas constructed after Dierking's instructions and a box keel made from a cut canoe.

 

[Manfred.pech]

Thank you for the picture. I am curious about the pointing and tacking ability - a trimaran with a long low aspect ratio styrodur keel - somewhat aside from mainstream tri design and not yet completed but clever and interesting.
The coffin is o.k., he can sleep inside and is weather protected. Don`t know if the volume of the floats is sufficient and the wave drag of the bows acceptible.

 

[Rumars]

analyzing this photos (too big to atach):
http://aqualifestyle.files.wordpress.com/2013/03/dsc_6534.jpg
http://aqualifestyle.files.wordpress.com/2013/03/dsc_6643.jpg
I don't know if the keel is really styrodur, the floats for sure. the boat seems to be designed to always have only one ama in the water at a time. You think he does not have any other lateral plane than that keel? would be strange indeed. it then would be a "Very Low Aspect Ratio" or VLAR keel. the sail area does't appear to be very small. I think that the ama bows are that high to counteract pitchpoling and have diagonal stability when running trough surf, like in the hawaian outriggers. love his beach launching sistem, a little grease on that strip of plastic and he is in the water. might be worth trying.

 

[Manfred.pech]

Yes 3mb is really big. But the photo is interesting. Thank you very much. It shows that the boat is above its lines though not yet finished. The floats seem to be low buoyancy outrigger - I think under 100% and the bows are a bit blunt, might cause eventually leeway. And yes, the launching system is clever.
I do not know exactly what the keel is made from: https://plus.google.com/photos/116596811248830247351/albums/5850545782267977857?banner=pwa&sqi&sqsi But it might be Styrodur.

 

[hoytedow]

I wish I had gotten there earlier. I got a few shots but barely got to talk to any skippers.

Another blurred shot

 

[ImaginaryNumber]

You think he does not have any other lateral plane than that keel? would be strange indeed. it then would be a "Very Low Aspect Ratio" or VLAR keel.

What is that long board lying in front of the bow on the blue plastic, in the OP's photo? Might it be a daggerboard?

 

[Manfred.pech]

What is that long board lying in front of the bow on the blue plastic, in the OP's photo? Might it be a daggerboard?

Yes indeed, that seems to be the daggerboard, but til now there is no exact pic with the slot of a daggerboard case. May be someone has a picture showing the item and we can see it later.
As Rumars wrote, the main hull shows influence of Matt Laydens "Paradox". If I remember right, Matt won the EC in 2003 with this boat. If so, the small Multihull is the Trimaran version of Paradox with a successful forefather.
It is a pity that there is no name of the boat nor the builder.

Hoyt, thank you for your photo.

Might be this picture from the kite video shows the daggerboard slot behind the mast:

And from the other side:

With the daggerboard and the low aspect ratio keel a lot of lateral area to reduce leeway.

 

[srimes]

I wish I had gotten there earlier. I got a few shots but barely got to talk to any skippers.

Another blurred shot

That may not have been intended as a "box keel", but the center hull with a large knuckle above the waterline, in order to have a high l/b and usable interior.

 

[ImaginaryNumber]

In this years Everglades Challenge an interesting small unfinished trimaran was to be seen. Does anybody know anything about this boat (dimensions, results, experience, owner, builder) ??

My first guess:

danceswithmullet
(aka channing boswell)

Confirmed - EC2013, Class 5,

Single Male

16-foot self-designed pilot house trimaran. She's coming naked - no time to paint!

4 Days, 8 Hours, 45 Min

^^^^^^^^^^^^^^^^^^^^

My second guess:

SewSew
(aka Randy Smyth)

Confirmed - EC2013, Class 5

Single Male

Sizzor is a home built trimaran that is forever evolving. After last years calamity, Sizzor is sporting faster flat bottom amas, a better righting system and one more year of experience.

Did not finish

Year? Sizzor?

^^^^^^^^^^^^^^^^^

http://www.watertribe.com/events/ShowRosters.aspx

http://www.watertribe.com/events/ChallengeResults.aspx

http://www.watertribe.com/RoguesGallery/Default.aspx

 

[Manfred.pech]

My first guess:

danceswithmullet
(aka channing boswell)

Confirmed - EC2013, Class 5,

Single Male

16-foot self-designed pilot house trimaran. She's coming naked - no time to paint!

4 Days, 8 Hours, 45 Min

^^^^^^^^^^^^^^^^^^^^

http://www.watertribe.com/events/ShowRosters.aspx

http://www.watertribe.com/events/ChallengeResults.aspx

http://www.watertribe.com/RoguesGallery/Default.aspx

Thank you Imaginary for your kind help. That is a good start to lern more about danceswithmullet and the intentions of the skipper.

 

[Rumars]

seems like the first option, pilot house not painted. a dagger makes indeed sense. I tought "box keel" because of it's stern form. A "large knuckle" is understated, I mean the lover hull area is pointed at the stern as in a double ender. I dont know enough about tri design but I think that for this form to work there must be nothing above it, so it can cut the water with minimal wake. and from the pictures I see that it is dragging part of that square transom when not perfectly level. That can't be good. Or maybe I'm wrong.
hoytedow's picture shows it perfectly level with the transom above water, but the sailor (and his weight) is on the other end, and from the first look I could swear he is just inserting the daggerboard but he probably does something else.

 

[Manfred.pech]

seems like the first option, pilot house not painted. a dagger makes indeed sense. I tought "box keel" because of it's stern form. A "large knuckle" is understated, I mean the lover hull area is pointed at the stern as in a double ender. I dont know enough about tri design but I think that for this form to work there must be nothing above it, so it can cut the water with minimal wake. and from the pictures I see that it is dragging part of that square transom when not perfectly level. That can't be good. Or maybe I'm wrong.
hoytedow's picture shows it perfectly level with the transom above water, but the sailor (and his weight) is on the other end, and from the first look I could swear he is just inserting the daggerboard but he probably does something else.

Don´t swear, the skipper of "danceswithmullet"(http://www.flickr.com/photos/robertbharrison/29178476/) has just opened the forward hatch as to be seen on Hoyts photo (my speculation).

Yes, the "large kuckle" seems to be understated. There seem to work the underwater part of the hull (not a device to prevent leeway, as I first thought) delivering submerged buoyany to reduce waveresistance and skinfriktion as the L/B ratio of the "Paradox-hull" does not allow to exceed hull speed.
But I think - as you - the buoyancy is not enuf and the distribution not optimal. This seems to be a risk with every "One off" boat.

Most of the hydrodynamic lift on a hull is gained about one third from the bow (not at the stern).To counter this lift and to avoid stern dragging/suction a pointed stern will not provide enough buoyancy.