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I know there is a forum for software, but my interest is in design. So, I am posting here. I am designing a proa, and have started learning Rhino 8. Looking to connect with people using Rhino and Grasshopper for Generative Design and Typology Optimisation and scripting, and if anyone would...

I have decided to buy Rhino 8. Is there a subgroup for Rhino on the forum? If not, can a moderator make one? Also, does anyone: 1- have a Rhino outboard model 6-10hp? Willing to share?

I am working on a design for a proa with schooner rig with sails overlapping. Since a proa, the sails will be identical as the boat sails in both directions. Looking for input/ guidance on: Aerodynamic flow Sail shape

Looking at maybe doing a Dura type proa with longer hull and sails on the 7.5m hull. Any info on this type of vessel? <thread title updated>

Want to build scale model for multihull design. What is typical scale? 1:20? How do you scale weight? I have 37kg existing hull and cat hulls. Scale- 1:20? 1:50? 1:100?

Building a 7.5m leward hull with cabin and 10m windward hull with 2 sails planned. looking for input/ opinion on sail rig option and ease of sailing. anyone use 7m tall catamaran masts with cat sail. I think I need 20sm sail area. I want to have option to reef and keep boat in water, so cant...

I have googled and can’t find drawings of Aero Rig sail construction. Looking for ideas how they pivot. Gear? Bicycle sprocket? Bearings? Intersection of boom and mast?

Has anyone converted a jet ski to electric sail drive water craft. I want to take an outboard leg and mount the gear box and prop in the hull where the jet drive is located. Would I get cavitation/ poor performance if located there? What electric motor brand are people using? Of course need...

Is there a good resource to see how people have built controls, wings and material? What is the best material, method to skin the foil? I am also interested in a ridgid 2 section foil with a third leading edge with normal sail cloth and battens so I can depower or dump the sail. building a...

Has anyone built stabiliser for the ama? This would be to have a central pivot axa joint like a bearing to allow the ama to slightly “flip flop” up and down the waves. I would have stoppers so restrict movement too much. Or have shock absorption small springs. Also, thinking of using aluminium...

I am going to take a 4hp outboard and make it a through hull fixed saildrive. What would be the place for the rudder? Can I have it 2 feet aft?

I have a 24’ (7.5m) carbon fiber hull that is 530mm tall in the middle and 530mm wide. I want a boat designed for a 4hp outboard and hopefully go faster than 12 knots. I am thinking of a power tri with standard amas and akas, or a tri with amas close to the hull for a stable powerboat look...

Is basalt fiber better than fiberglass? Is it the cheaper version to carbon fibre? For 7 meter boat with diviny cell or 3mm ply?

I am contemplating either a 30’ Power Proa or a Trimaran and want to know thoughts on efficiency and speed? Here is the type of power Proa 20 foot Power Proa - Bieker Boats https://biekerboats.com/project/20-foot-power-proa/

Looking at building a Very Slender Vessel with Low Displacement Length of about 24-30 foot boat using a maximum 4HP outboard or motor for commuting 4nM. Live in Australia where you don’t need to register a boat under 4HP. Looking at maximum speed and 4-6 foot wide. Made with stitch and glue 5mm...