Another thought is to have a small submersible with high torque propeller and drive system that can pull the boat using a rope. This ends up...
Those are indeed rough conditions.. I have experienced in Indonesia 6-8 knot currents (straits between Indian and pacific ocean) with 25 knot...
Could a system of kites on both the hull and masthead be used to both orient the mast upwind, and then lift it upwards righting the boat again? I...
21 foot wharrams are slow and heavy. I also think the more likely place to flip is where there are strong currents and contrary wind. Often I...
A few ideas a symmetrical boat. Most boats are symmetrical either fore and aft or port/starboard. This boat would be symmetrical above and...
This has become a bit off-topic, but you can only optimize the prop for one particular speed and thrust requirement. So if you were to optimize...
The cost of the filament makes printing boats very expensive. The cost is at least $10-20 per kg. Otherwise you could print a full size boat...
Superior in what way? It seems like its easier to work with, and faster to build. For a given weight, wouldn't it always be strongest to use...
I am also interested when you figure it out. You need dagger boards as well, and ideally the dagger board similarly has a trim tab, or at...
Obviously the wheels are hinged on 2 axes so they can rotate out, allowing the robot to travel 4 knots using 600 watts. It can maintain 3 knots...
The slower you go on electric propulsion the longer the range. The longer the robot is in the ocean, it will have things growing on it, which...
really interested in using multiple layers but cant find a lot of information. Also worried about water between the layers. What about...
To save money should you simply look for existing boats? Perhaps old racing multihulls? You could reduce the sail area (shorten mast) and add...
I used ottertex. I think the main advantage to polyester is a lot more stuff bonds? So you can paint it with a lot of different things and...
This is low efficiency. Remember that a single horse can pull a 20 ton barge 4 knots this is 754 watts. Your proposed boat is not even ne...
I have been using polyester fabric and coating it by thinning silicone sealant and painting it.
Let me try to explain my experience of lightweight multihull. in 20 knot of wind, I am using only a headsail half rolled up (60%) and...
I once had a 3 meter long kevlar kayak that weighed 4kg. I could barely use it, was designed for a kid. Anyway, when I paddled really hard it...
Many boats have jib tracks allowing one dimension of adjustment along with the tension in the jib sheet itself gives 2 dimensions where 3 exist....
First, my daggerboard is at 45 degree angle which is strange but from the old design (kraken 33) I thought a more vertical angle was more...
