Boat Design Forums

  1. Design

    1. Boat Design

      Discuss boat design concepts, projects, plans, reviews, resources, and general design topics.
      Discussions:
      15,079
      Messages:
      228,041
      Latest: Dream project: Converting a support vessel <300 GT into a long-range liveaboard expedition yacht Josef Brychta, Jul 8, 2025 at 4:56 PM
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    2. Hydrodynamics and Aerodynamics

      Technical discussion on fluid dynamics: theory and analysis.
      Discussions:
      1,039
      Messages:
      23,468
      Latest: Keel Section motorbike, Jul 8, 2025 at 4:39 AM
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    3. Stability

      Discuss stability issues and calculations, power and sail.
      Discussions:
      1,020
      Messages:
      16,839
      Latest: Rolly custom steel motorboat LeoKa, Jun 30, 2025
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    4. Class Societies

      Scantling Rules, updates and discussion on Society Classification: Lloyds, ABS, DNV, ISO ...
      Discussions:
      415
      Messages:
      4,733
      Latest: ABS m^2 – m^2 VS cm^4 yanivmass, May 11, 2025
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    5. Powerboats

      Discuss production and custom powerboats and powerboat design.
      Discussions:
      2,691
      Messages:
      28,778
      Latest: Cary Marine Cary DiCosta, Jun 23, 2025
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    6. Propulsion

      Discuss marine engines, drives, and propulsion systems.
      Discussions:
      6,048
      Messages:
      71,541

      1. Props

      2. Surface Drives

      3. Jet Drives

      4. Outboards

      5. Sterndrives

      6. Pod Drives

      7. Inboards

      8. Diesel Engines

      9. Gas Engines

      10. Electric Propulsion

      11. Hybrid

      12. DIY Marinizing

      Latest: Need help please 70hp Johnson ondarvr, Jul 8, 2025 at 4:01 PM
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    7. Motorsailers

      Discuss monohull and multihull motorsailers and motorsailer design.
      Discussions:
      159
      Messages:
      4,000
      Latest: A Case for the small(er) Motorsailer CarlosK2, Jul 8, 2025 at 10:40 AM
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    8. Sailboats

      Discuss monohull sailboat design, production and custom monohull sailboats.
      Discussions:
      4,490
      Messages:
      82,417
      Latest: sailboat bows CarlosK2, Jul 4, 2025 at 12:06 PM
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    9. Multihulls

      Discuss multi-hull sailboat design, production and custom sailing catamarans and trimarans.
      Discussions:
      3,370
      Messages:
      89,916
      Latest: Multihull Structure Thoughts oldmulti, Jul 7, 2025 at 7:41 PM
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    10. OnBoard Electronics & Controls

      Discuss onboard mechanical, hydraulic, and electric control systems, monitoring, navigation, communication, systems integration and onboard computer systems.
      Discussions:
      874
      Messages:
      11,028
      Latest: SignalK Integrated modular system for boat automation. Rumars, Jun 10, 2025
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    11. Software

      Discuss marine design software: hull design, fairing, modeling, rendering, and CNC.
      Discussions:
      3,138
      Messages:
      25,265

      1. General Computing

      Latest: Trimaran planing hull ? montero, Jun 29, 2025
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  2. Collaboration

    1. Option One

      Collaborative design of a power cruiser: trailerable, 300 mile range, economical at cruise & displacement speeds.
      Discussions:
      67
      Messages:
      1,727
      Latest: Cool trailerable boat parkland, Jan 9, 2015
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    2. Projects & Proposals

      An open forum to generate ideas for collaborative design projects.
      Discussions:
      449
      Messages:
      8,730
      Latest: Electric Launch Design optimized for semi-displacement speeds gonzo, Jul 7, 2025 at 4:23 PM
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  3. Construction

    1. Boatbuilding

      Discuss boatbuilding projects, methods, plans & kits, ask questions, and share your experiences.
      Discussions:
      10,962
      Messages:
      135,269

      1. Fiberglass and Composite Boat Building

      2. Metal Boat Building

      3. Wooden Boat Building and Restoration

      4. Electrical Systems

      Latest: one of my 2" thick wormshoe boards bowed due to tension when split from the 2x8 sdowney717, Jul 8, 2025 at 1:51 PM
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    2. Materials

      Discuss boatbuilding materials: composites, woods, metals, plastics, and finishes.
      Discussions:
      3,001
      Messages:
      32,154
      Latest: Building lightweight sandwich panels for cabinetry & interior construction wet feet, Jul 8, 2025 at 3:32 PM
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    3. Marketplace

      Boatbuilding materials, tools, equipment, molds, tooling and custom projects for sale or trade.
      Discussions:
      2,916
      Messages:
      13,214

      1. Boat Molds

      Latest: Seahunter Tournament 40 molds for sale. Brian Koch, Jul 7, 2025 at 10:16 AM
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  4. Employment and Education

    1. Education

      Discuss schools and programs of Naval Architecture and Yacht Design and entry paths into a boat design career.
      Discussions:
      904
      Messages:
      6,472
      Latest: where to learn inflatable boat construction? montero, Jun 29, 2025
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    2. Services & Employment

      Post positions available and marine design and boatbuilding services offered.
      Discussions:
      1,882
      Messages:
      6,470
      Latest: NA in Portland OR area? BlueBell, Jul 1, 2025
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  5. Community

    1. All Things Boats & Boating

      Enjoy friendly conversation with other forum members and boaters on marine-related topics, boats, and boating in general.
      Discussions:
      4,276
      Messages:
      142,284

      1. Press Releases

      2. Wiki Archive

      3. Forum Questions and Suggestions

      4. Post-Tsunami

      Latest: Another Car Carrier Fire comfisherman, Jun 25, 2025
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