• Jack W. Sarin Naval Architects, Inc.  
  Full service naval architectural firm in business since 1980, provides professional hull design, styling, engineering, and interior design. (Added: 22-Jan-2000 Hits: 5143)  Rate | Cached | Visit Jack W. Sarin Naval Architects, Inc.

• James Wharram Catamarans  
  
  Designers of polynesian style catamarans 14-65 ft for the self builder. (Added: 11-Jan-2001 Hits: 7514)  Rate | Cached | Visit James Wharram Catamarans

• JB Marine Consultancy  
  Design, analysis, trials, surveys, design and general arrangement for new vessels, structural design and sructural analysis, hydrodynamics, weight calculation and check of centre of gravity / flotation. Surveys and Certification including MCA Coded vessels, stability and inclining tests. (Added: 13-Nov-2002 Hits: 3922)  Rate | Cached | Visit JB Marine Consultancy

• Jean-Michel Nalpowik  
  Long distance cruising and ocean racing sailboat designs for amateur and professional builders. (Added: 2-Jan-2000 Hits: 5753)  Rate | Cached | Visit Jean-Michel Nalpowik

• Jeff Schionning Designs  
  Australian designer of sailing multihulls. "The basics are seaworthiness, bridgedeck height, buoyancy distribution, structural strength, ability to sail out of an unpleasant situation, and seakindliness to keep the crew comfortable and competent" (Added: 9-Jan-2001 Hits: 5724)  Rate | Cached | Visit Jeff Schionning Designs

• Jim Taylor Yacht Designs  
  Jim Taylor Yacht Designs offers yacht design services including custom and production designs, both racing and cruising. We also provide a broad range of yacht optimization, yacht alteration, and yachting consultation services. To date, some 2,000 sailors have owned and enjoyed our designs. (Added: 10-Nov-2013 Hits: 2596)  Rate | Cached | Visit Jim Taylor Yacht Designs

• John G. Alden  
  Founded in 1909 and by 1932 known worldwide due to his "Malabar" design's success on the offshore racing scene. Best known for fast and seaworthy offshore sailing yachts - custom and production. (Added: 9-Feb-2000 Hits: 5681)  Rate | Cached | Visit John G. Alden

• John Holtrop Design  
  Skiffs, Trawlers, and a beautiful collection of twin-keel, monohull, and multihull sailboats. Site also features a collection of technical articles covering such things as stability, rigid wing sails, canoe design, and water ballast. (Added: 25-Sep-1999 Hits: 12462)  Rate | Cached | Visit John Holtrop Design

• John J McMullen Associates  
  Ship design, naval architecture, marine engineering, combat systems engineering, information services, environmental services. (Added: 5-Nov-2000 Hits: 4021)  Rate | Cached | Visit John J McMullen Associates

• John Shuttleworth Yacht Design  
  Multihull designer based in England (Added: 25-Sep-1999 Hits: 5470)  Rate | Cached | Visit John Shuttleworth Yacht Design

• Jonas Panacek Yacht Design  
  Yacht design, management, and survey, from traditional sailing yachts to very aggressively styled sportfishing boats. (Added: 24-Oct-1999 Hits: 4473)  Rate | Cached | Visit Jonas Panacek Yacht Design

• Jonathan Quinn Barnett Ltd.  
  Superyacht design: exterior and interior design as well as computer modeling. (Added: 27-Sep-1999 Hits: 5844)  Rate | Cached | Visit Jonathan Quinn Barnett Ltd.

• Archive: Josset Yacht Design  
  Specializing in the design of power and high performance cruising designs. Specialists in carbon and composite engineering. France (Added: 22-Jan-2010 Hits: 2850)  Rate | Cached | Archive

• JP Donovan Design  
  Incorporating the experience gained as a designer for several America's Cup programs, JP Donovan provides sailing yacht designs of uncompromising performance and style - Custom designs for sailing monohull & multihull & stock plans available. (Added: 27-May-2003 Hits: 4209)  Rate | Cached | Visit JP Donovan Design

• JSYachtDesign  
  Production & Custom Boat designs by Joshua Sauer, NA. Specializing in Tow & Sport Boats, Runabouts & Crusing Yachts. Hands on design from the page to the water. (Added: 13-Jan-2008 Hits: 2909)  Rate | Cached | Visit JSYachtDesign

• Julien Marin Yacht Design  
  Yacht & powerboat designs, mono & multihulls, with a specific interest in fast racing yachts. (Added: 20-Feb-2004 Hits: 4751)  Rate | Cached | Visit Julien Marin Yacht Design

• Karol Wierzbicki Naval Architecture  
  Yacht design and naval architecture of cruising and racing yachts. My main area of work is strictly Naval Architecture and nearly everything that is in common. Here's short list: Yacht Design, preliminary design, price estimation, technological documentation preparation, visualization, FEM analysis, cutting files preparation, 3d modeling and many more. (Added: 5-Dec-2011 Hits: 2605)  Rate | Cached | Visit Karol Wierzbicki Naval Architecture

• Kasten Marine Design  
  Motor yachts and sailing vessels for blue water voyaging. Modern hull forms with a classical appearance in steel, aluminum, fiberglass or wood. (Added: 24-Oct-1999 Hits: 6239)  Rate | Cached | Visit Kasten Marine Design

• KD Marine Design  
  High performance yacht and boat design. Specialist analysis services include: Finite element analysis and optimization of composite structures, Computational Fluid Dynamics analysis, Seakeeping analysis, multihull and monohull VPP including canting keel and water ballasted models. (Added: 6-Jun-2011 Hits: 2933)  Rate | Cached | Visit KD Marine Design

• Kelsall Catamarans  
  Wide range of catamaran designs. Sail, power and comercial. Custom enquiries welcomed. (Added: 17-Dec-2006 Hits: 3632)  Rate | Cached | Visit Kelsall Catamarans

• Ken Freivokh Design  
  
  Designer for Sunseeker Powerboats (17 models), Prout Catamarans, etc. (Added: 25-Sep-1999 Hits: 6551)  Rate | Cached | Visit Ken Freivokh Design

• Kenneth Veenenbos  
  Designer of hydrogen powered fuel cell boat for Amsterdam. Worked for Damen shipyards (Added: 11-Mar-2009 Hits: 2532)  Rate | Cached | Visit Kenneth Veenenbos

• Kerwin Naval Architects, Inc.  
  Full service design & engineering firm performing new construction design and refit engineering with production in mind. Established in 1997 in Ft. Lauderdale, we have provided engineering and design, expert witness testimony, damage surveys, and shipyard process design for hundreds of clients. We specialize in production motoryachts over 40' and custom motoryachts over 60', as well as small commercial vessel (under 400') work. (Added: 4-May-2004 Hits: 3646)  Rate | Cached | Visit Kerwin Naval Architects, Inc.

• kornaat yachtdesign  
  Designers of sail,small workboats and powerboats with a traditional and timeless look. Holland. (Added: 7-Jun-2005 Hits: 4449)  Rate | Cached | Visit kornaat yachtdesign

• Kurt Hughes Sailing Designs  
  KHSD is a Custom and Commercial Design Service for Multihulls in Power and Sail - Creating Catamarans, Trimarans, and Proas at the Cutting Edge of Sailing Technology. (Added: 17-May-2004 Hits: 4988)  Rate | Cached | Visit Kurt Hughes Sailing Designs