B&G Yacht Design (Roberto & Astrid Barros, Luis Gouveia, designs for amateur and professional builders: sail & power yachts, professional fishing boats and utility craft, Perth, Western Australia)
Bill Thonas Maker (Plans and kits for sea kayaks, a canoe and a pram, South Berwick, Maine)
Björn Thomasson Design (Canoe, kayak and small boat designs for amateur builders, Sweden)
Bryan Boatbuilding (Wooden boat plans by Harry Bryan, Letete, New Brunswick)
The Bulgarian Ship Hydrodynamics Centre (National research and development institute doing fundamental and applied research in ship and offshore hydrodynamics, coastal hydraulics, aerodynamics, environment, water transport and information technology)
concept.pg (Cruising yacht designs by Peter Gallinelli, Geneva, Switzerland)
The Daniel S. Gregory Ships Plans Library at Mystic Seaport (100,000 sheets of original plans for vessels of all kinds, from L. Francis Herreshoff, Phil Rhodes, Pete Culler, Albert Condon, Starling Burgess, and many other well-known designers)
Eskimo Tom (Plans for wooden canoes, kayaks & small boats, St. Paul, Minnesota)
Estabrook Yacht Design (Naval architect and yacht interior designer, small craft plans and kits suitable for beginners and experienced builders, Yarmouth, Maine)
Expedition Yachts International (Complete naval architecture, marine engineering, specification development, consulting, and project management)
The Francis Russell Hart Nautical Museum (At MIT, holds plans and other materials from Nathaniel Herreshoff, William Hand, John G. Alden, Frank C. Paine, Gordon Munro, George Owen, more, Cambridge, Massachusetts)
Guillemot Kayaks (Nick Schade's high performance wooden sea kayak plans for do-it-yourselfers)
Hakan Sodergren Yacht Design (Racing boats, high performance cruisers, family powerboats for the Scandinavian waters, Saltsjöbaden, Sweden)
Harland & Wolff (Design & engineering for the offshore industry, Belfast, Northern Ireland)
Harryproa (Plans & kits for Harry, Harrigami & Visionarry cruising proas designed by Rob Denney, Australia)
Hartley Boat Plans (Plans for home boatbuilders, New Plymouth, New Zealand)
Hawaii Marine Company (Naval architectural, marine engineering, computer aided design & drafting)
The H. C. Hanson Naval Architecture Collection (A collection of plans, photographs, periodicals and other assorted materials detailing the life and work of Harold Cornelius Hanson, Pacific Northwest designer of commercial watercraft)
Headland Boats (Sailing skiff and other small boat plans by Michael Roberts, Manly, Queensland)
Heiwa Co. (Ship safety, building project and ship management audit consultants, developer of the Coulombi Egg tanker design, Beausoleil, France)
Hermit Cove Boats (Kits and plans for skin on frame boats, Port Townsend, Washington)
Hockema Group (Full service naval architects and engineers primarily involved in commercial and government projects, Seattle, Washington and Bend, Oregon)
Hoek Design (Classic and modern style sailing yachts, motor yachts, Dutch leeboard yachts, Edam, the Netherlands)
The i550 Sportboat (High performance sport sailboat for amateur builders)
Innovations in IACC Keel Design (Paper by Philip Carter the Condor Keel for racing sailboats, in particular the International America's Cup Class, which marries multi-element foil sections & planar winglets)
IRISoft Yacht (Representing Plessis-Marin Yacht Design in the Benelux)
Island Engineering (Design engineering in support of advanced marine vehicles like hydrofoils)
Italstyle (A group of young Italian naval designers providing futuristic and classical designs for all kinds of boats, Genoa)
Ivanboats (Plans and kits for small stitch 'n' glue sailboats and powerboats, Russia)
Macduff Ship Design Ltd. (Fishing and commercial vessel design and consultation, Macduff, Aberdeenshire)
McGowan Marine Design, Inc. (Commercial fishing boats, pleasure boats, small energy efficient sail and human powered boats by Laurie McGowan, Annapolis Royal, Nova Scotia)
Mandl - Living On Water (Ships, yachts, small boats, houseboats, floating houses, floating structures and boats for special purposes, Bratislava, Slovak Republic)
Marigraph Design & Solutions (Graphical presentation of ships using 3-D computer models for ship yards, yacht designers, naval architects, shipping companies, and maritime organizations)
MARIN (Maritime Research Institute Netherlands, hydrodynamics research, performance predictions, design consultancy, testing services and simulation and training consultancy)
Marine Timbers (Kits for small plywood boats, Seaford, Australia)
Michael Storer Design (Lightweight, high performance wooden boats of traditional appearance for amateur construction, srticles on boatbuilding, design and setup)
Midwest Engineering (Plans for 1 and 2 man homebuilt submarines, a scuba scooter, hydrophone, and underwater camcorder housing)
Mike Waller Yacht Design (Stock plans for amateur builders and custom monohull and multihull designs, Australia)
Milford Boats (New Haven sharpie inspired camp cruiser plans for amateur builders, Christchurch New Zealand)
Mills Design (Mark Mills' medium/light displacement racing and cruising sailboat designs, Three Mile Water, County Wicklow, Ireland)
Morrelli & Melvin Yacht Design & Engineering (design and engineering of racing catamarans, catamaran ferries and catamaran work boats/supply boats, Huntington Beach, California)
M. u. H. von der Linden GmbH (Bear Mountain Boats strip-planked canoe and kayak plans and kits, kits for Grainger and Schionning catamarans, Wesel, Germany)
MultiMarine (Multihull designs by Michael Leneman, Venice, California)
Multimono (Kits for a 23' multi-purpose sailboat, France)
