| | Forum | Last Post | Threads | Posts |
 |  | Discuss boat design concepts, projects, plans, reviews, resources, and general design topics. | |
Today 02:25 PM  | 8,947 | 119,251 |
| | Technical discussion on fluid dynamics: theory and analysis. | |
Today 06:49 AM | 112 | 2,779 |
| | Discuss stability issues and calculations, power and sail. | |
Today 03:02 PM | 448 | 8,679 |
| | Scantling Rules, updates and discussion on Society Classification: Lloyds, ABS, DNV, ISO ... | |
Yesterday 11:30 PM | 193 | 2,229 |
| | Discuss production and custom powerboats and powerboat design. | |
Today 06:52 AM | 1,959 | 19,306 |
| | Discuss marine engines, drives, and propulsion systems. Sub-Forums:  Props, Surface Drives,  Jet Drives, Outboards, Sterndrives, Pod Drives, Inboards, Diesel Engines, Gas Engines, Hybrid, DIY Marinizing | |
Today 11:42 AM | 3,818 | 41,876 |
 | | Discuss monohull and multihull motorsailers and motorsailer design. | |
01-24-2012 11:42 AM | 101 | 2,730 |
| | Discuss monohull sailboats - production and custom - and sailboat design. | |
Today 02:57 PM | 2,983 | 50,274 |
| | Discuss multi-hull sailboats, catamarans and trimarans, and sailing multihull design. | |
Today 03:12 PM | 1,484 | 31,348 |
| | Discuss onboard mechanical, hydraulic, and electric control systems, monitoring, navigation, communication, systems integration and onboard computer systems. | |
Today 02:00 PM | 413 | 5,539 |
| | Discuss marine design software: hull design, fairing, modeling, rendering, and CNC. | |
Today 01:41 PM | 1,998 | 16,498 |
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