Відео

Topspeed is 13.something kn right now, double digits show up on the meter frequently (see some of the other viceos). There is a (quite outdated) section about performance on www.proas.is. The genacker is just 6 sqm, not particular large. However it is difficult to adjust correctly. The video was the first test without proper tackles for the sheet in place yet.

@@proasisproject great speed…is it a bit wet! Just looks like the luff is too lose?

​@@markthomasson5077 usually completely dry, only some spray at the bow. We are still figuring out how to set the Gennaker together with the main. We didn't made it for the boat so we have to work with it somehow. If the luff is much tighter the gap between main and Genny is very small.

Glad you enjoyed it!

Sure, happy to try!

Same, but works fine. The thrust vector of the Gennaker is supposed to point up, therefore no problem with pitch. We are now busy to figure out how both sails work together best. If you look closely you can see the Gennaker was hoisted in two different modes.

Merci!

Thanks!

If you have a reliable and practical solution to launch and control the kite you are very welcome to give it a try! Honestly, as a kite surfer, sail maker and naval architect Im very sceptical. There is a guy around the corner building a kite proa, with very limited success unfortunately. A while ago I made a sail for him so the proa at least gets on the water. Setting aside the launch and control problem, I wonder how a kite would deal with gusty wind or the wind dropping suddenly when close to shore. I already see it dropping in the shipping lane and get run over by a big ship.

Thank you 😊

That afternoon we sailed about 30 miles, most of it less spectacular beating upwind though. The video was filmed with true wind and swell from approximately 250-260°.

We don't, this is a proa. Proas sail forwards and backwards and perform a maneuver called shunting. We have a video that covers this topic in detail: ua-cam.com/video/Hcr6p6E8aoQ/v-deo.htmlsi=OPoHOaxpjCbtemDe

Hey, not sure what you mean but we didn't add anything to the WW hull.

@@proasisproject OK: probably an optical illusion then.

​@@lucdekeyserMaybe send me a screenshot and mark the area if you want to know for sure

@@proasisproject from 00:17-00:25 there is the illusion of the outline of a board just under the windows, which is, I guess, just the flat wall section between the beam attachment setup.

Sorry, we were a bit in a rush so these are the only shots we filmed. You can find some photos on www.proas.is. Basically it's a massive steel frame that we welded and got galvanized. The wheels (cadkat catamaran slip trolley wheels) are mounted in between the hulls for better maneuverability. The passage through the dunes is quite narrow and we can not make it wider for conservation reasons.

@@proasisproject do you think with a similar set up and a tractor, a proa with the same weight as yours could be easily launched and retrieved from the water on a sandy beach daily? Or it is a difficult task only feasible sporadically, even with the use of a tractor?

@@gregory1778 Fore my taste it would be too much effort. Preparing everything takes time (at least 1h until the trolley is under the boat) and is a job for at least two due to the weight of the trolley+wheels. Taking the trolley off the boat in the water is surprisingly difficult due to the buoyancy in the tires, again a 2-4 person job. We take everything out and off the boat before we move it to reduce the weight. Even then we are close to what the tires are rated for. Bringing all the stuff down the beach and setting it up takes about 2-3h. So a clear no for taking it in and out on a daily base. You could use stronger wheels (old car wheels for example with stainless steel ball bearings) to support the entire weight and safe on that time but it would still be an annoying job to move the trolley under the hulls/take it off and make sure it sits on there nicely etc. I'm happy we have to do it only twice a year!

The wam catamaran can easily carry 1.5 tons. Hulls are 6m long and 1m wide but you can build them any length between 5 and 8m . The mast is as high as the longest pieces of lumber we could find.

In very light conditions more sail wouldn't harm but in all other conditions its more than adequate. Actually we trial reefing systems right now. This type of sail is quite powerful.

Unfortunately it will be difficult to get these answers. It is Marshallese custom that this kind of knowledge is kept in the family and only revealed to carefully chosen persons.

Yes I figured that. It's weird, they lament the modernisation of the islands, and the loss of their traditional canoe building skills, but don't want to share their technical knowledge (honed over hundreds or even thousands of generations), and they talk about the need to preserve their culrure but then are totally insular about it. It's lucky that western (white) culture isn't so zenophobic and has shared our knowledge of all our technology with the world..medicine antibiotics, communications technology, mobile phones, internet, sanitation, running water, himan rights, westminster system of law etc, if we acted like the Marshallese with their canoe tech the world would still be in the dark ages! I guess I'll just have to work it all out for myself!

Initially there were pretty tight limits for length and width given by the funder. This is the first prototype built according to these. The series design grew a little wider, but not much to avoid overloading.

Search for Drua or Alia, a configuration like this used to be the traditional design on many islands such as Fiji and Samoa.

@@proasisproject thks. and good look for you!

@@proasisproject See here... A origem dos catamarãs... eu sabia que o multi casco teve origem no pacifíco... mas não tinha visto ainda nada parecido. Muito obrigado pela atenção.

Thanks! No not really actually. Doing it for years already. It gets even more easy with stronger wind. The secret is the right technique (as demonstrated in this video). The wind adds stability and does most of the work.

@@proasisproject ..I was thinking of when the waves are crashing over the bow(s) and the wind ripping the sail from your grip.

​@@markthomasson5077in conditions when there are waves crashing over the bows without the boat moving (i.e. heaved to position in preparation for a shunt) there is no sailing anymore anyway.

Thanks, that's nice to know :) Yeah, we keep it like this on purpose. As simple and possible. We don't mind the moving, it's really much less of an effort than it looks like (with the right technique of course). We use proasis quite often for story telling events about climate change and other ocean related activities. For the guests it's always a sensation to feel the wind in their hands and move with the waves and the boat. To be honest I like it alot too. Having a track might make the shunt a bit faster by forcing the sail to the other side but the direct connection is lost. The feeling of a manual shunt is difficult to describe but I don't want to miss it.

Thanks!

Hi, the design weighs about 300kg empty (all plywood and lumber). The sail is 16-17 sqm, not sure what they built for that particular one.

The resort (MIR) is in the delap area, way behind the bridge. You can find a chapter marker in the video. The main copra plant (Tobolar) is next to delap dock (the main dock for container ships). This is also way past the bridge. There is another Tobolar plant towards the Laura direction (opposite direction) way past the airport but that one is way smaller and never looked busy to me.

Absolutely, this is a typical example of green washing at the expense of the local people.

It is, Gary provided the design pro bono to support the project.

Thanks! This is a traditional Marshallese canoe. By custom, the knowledge how to build and sail these can not be sold or given without permission.

Have a look in the description, this video has a sad story unfortunately :(

Absolutely agree with your last sentence. A proa is definitely not the best design for inland sailing. That said, we only do inland sailing over here, the Baltic sea is just not a real ocean. We've logged well over 1000 nm with Proasis, considerable stretches singlehanded. Believe it or not, shunting our canoe is really as easy as the soothing voice tells you :D If you are still not convinced you are very welcome to join us sailing and see for yourself. But be warned, the girl with the soothing voice might join too 😅

500kg is to much for a 9m plywood/scrap wood proa for a budget of 4k? I dont think so . . .

Oh no why crying?

Thanks!

Muchas gracias!

Both (kind of). The foils themselves (old F18 daggerboards) run in casetts up and down. They can be adjusted for the water depth or even completely retracted. The connector tube has a fuse which allows it to telescope and kick up the rudder so far that they clear the surface, even if all the way down. The fuse is reset by simply pushing down the rudder frame. It snaps back automatically. The entire setup consists only of two tubes, a round piece of PVC and a bungee cord. No metal or complicated mechanic. So the draught of the rudder can be preset. If something goes wrong (shallow spot, rock, reef or heavy floating object) they kick up.

so is the fuse a notch that the bungee grips? so it pops out and is then free?

​@@dominictarrsailingno it's never free. There is a smaller tube inside of the yellow one. Both tubes have a semi circular cutout. The cutouts are lined up by a PVC cam which is tensioned by bungee cord. If the rudder hits something the inner tube is pulled out about 30cm to kick the rudder up. Sounds complicated but it's as simple as it gets. Don't worry if my explanation is difficult to follow, there will soon be a video showing that part in detail 😅

I think I can imagine it but a video is even better!

​@@dominictarrsailingworking on it 👍