Discuss boat design concepts, projects, plans, reviews, resources, and general design topics.
Technical discussion on fluid dynamics: theory and analysis.
Discuss stability issues and calculations, power and sail.
Scantling Rules, updates and discussion on Society Classification: Lloyds, ABS, DNV, ISO ...
Discuss production and custom powerboats and powerboat design.
Discuss marine engines, drives, and propulsion systems. Props Propeller selection, performance comparison, prediction, experience, and modification. Surface Drives Surface Drives. Arneson, BPM, Seafury, PSI, Levi, Etc. Jet Drives Jet Drives (pumps, impellers, etc.) Outboards 2-stroke and 4-stroke outboard motors. Sterndrives Stern drive lower and upper units, transom and gimbal assemblies, steering, and trim pumps. Mercruiser (Alpha One, Alpha One Generation II, Alpha SS, Bravo One, Bravo Two, Bravo Three, Bravo XR Sportmaster, TRS, Speed Master), IMCO, ILMOR, Konrad, OMC, Volvo Penta Pod Drives Volvo IPS, ZF, CMD Zeus, and other pod-drive systems Inboards Inboard and Vee-drive hardware: struts, stuffing boxes, transmissions, coolers Diesel Engines Diesel Engines Gas Engines Gasoline Engines Electric Propulsion Electric propulsion systems Hybrid Hybrid propulsion such as diesel electric, hydraulic. DIY Marinizing A forum to discuss "do it yourself" marinizing of engines / conversion of automotive engines to marine use.
Discuss marine engines, drives, and propulsion systems.
Propeller selection, performance comparison, prediction, experience, and modification.
Surface Drives. Arneson, BPM, Seafury, PSI, Levi, Etc.
Jet Drives (pumps, impellers, etc.)
2-stroke and 4-stroke outboard motors.
Stern drive lower and upper units, transom and gimbal assemblies, steering, and trim pumps. Mercruiser (Alpha One, Alpha One Generation II, Alpha SS, Bravo One, Bravo Two, Bravo Three, Bravo XR Sportmaster, TRS, Speed Master), IMCO, ILMOR, Konrad, OMC, Volvo Penta
Volvo IPS, ZF, CMD Zeus, and other pod-drive systems
Inboard and Vee-drive hardware: struts, stuffing boxes, transmissions, coolers
Diesel Engines
Gasoline Engines
Electric propulsion systems
Hybrid propulsion such as diesel electric, hydraulic.
A forum to discuss "do it yourself" marinizing of engines / conversion of automotive engines to marine use.
Discuss monohull and multihull motorsailers and motorsailer design.
Discuss monohull sailboat design, production and custom monohull sailboats.
Discuss multi-hull sailboat design, production and custom sailing catamarans and trimarans.
Discuss onboard mechanical, hydraulic, and electric control systems, monitoring, navigation, communication, systems integration and onboard computer systems.
Discuss marine design software: hull design, fairing, modeling, rendering, and CNC.
Discuss boatbuilding projects, methods, plans & kits, ask questions, and share your experiences. Fiberglass and Composite Boat Building A forum to discuss and share tips and project updates on fiberglass boat building and repair as well as mold construction and tooling. Metal Boat Building A forum to discuss and share tips and project updates on the building or renovation of steel and aluminum boats. Wooden Boat Building and Restoration A forum to discuss and share tips and project updates on the building or renovation and restoration of classic wooden boats Electrical Systems A forum to discuss marine electrical systems design, electrical components, sources, and techniques.
Discuss boatbuilding projects, methods, plans & kits, ask questions, and share your experiences.
A forum to discuss and share tips and project updates on fiberglass boat building and repair as well as mold construction and tooling.
A forum to discuss and share tips and project updates on the building or renovation of steel and aluminum boats.
A forum to discuss and share tips and project updates on the building or renovation and restoration of classic wooden boats
A forum to discuss marine electrical systems design, electrical components, sources, and techniques.
Discuss boatbuilding materials: composites, woods, metals, plastics, and finishes.
Boatbuilding materials, tools, equipment, molds, tooling and custom projects for sale or trade.
Discuss schools and programs of Naval Architecture and Yacht Design and entry paths into a boat design career.
Post positions available and marine design and boatbuilding services offered.
Enjoy friendly conversation with other forum members and boaters on marine-related topics, boats, and boating in general.
Design Review and Exhibit for Professional Designers.
Design Review and Exhibit for Student Designers.
Beautiful display, design, and test models.
Sometimes it's most fun to see a design underway. Looking for some comments or ideas? Please post drawings, sketches, models, and projects in progress here for others to look at and comment on.
Have a project under construction that you would like to show to others? Or a great finished project with a sequence of construction photos? Please post pictures here.
And other Power Multihulls.
Crusing Powerboats.
The finest Wooden Performance and Crusing Boats.
Environmentally Friendly Craft.
High-Performance Monohull Powerboats.
Sportfising Boats, Flybridges, and Other.
Rigid Inflatable Boats.
Trawler Yachts.
Yachts and larger Ships.
Working tug boats as well as tugboat conversions
Photos of Engines and Drives, Outboards, Inboards, Stern Drives, Jet Drives, Surface Drives, and related systems.
Monohull Sailboats.
Multihull Sailboats.