ONE-STOP SHOP FOR YACHT DESIGN AND DEVELOPMENT
Our Profile
Serving boatbuilders with:
Concepts
Branding
Naval architecture
Exterior and interior design
Engineering
Build process design
Milling and tooling
Prototyping
Our ID
400
Projects
65
Clients
28
Countries Served
1983
Since
135+
Boat of the Year or Design Awards
75,000+
Boats And Yachts Built Worldwide Based On Our Designs
From first sketch to finished mould, J&J Design handles the full development chain. Concept, naval architecture, exterior and interior design, structural engineering, production process design, prototyping, and CNC tooling — all under one roof, all coordinated by the same team. Founded in Ljubljana in 1983, the office has delivered over 400 projects for production boatbuilders across 28 countries. More than 75,000 boats and yachts worldwide have been built from J&J designs. For boatbuilders, that means fewer suppliers, faster development cycles, and a single point of accountability from drawing board to production mould.
J&J Design has been ahead of the curve on sustainable construction since before it became an industry talking point. The office introduced carbon fibre epoxy prepreg technology to production cruising yachts with the Shipman range — technology previously reserved for America's Cup campaigns. In 2009, the team developed the Greenline 33, one of the first hybrid diesel-electric-solar production powerboats, which ranked among the best-selling 10-metre boats of 2010 and 2011. Solar-hybrid propulsion was extended to sailing with the Shipman 59 Hybrid Solar Carbon in 2014. At the Boat Builder Awards Amsterdam in 2024, Japec and Jernej Jakopin were named Designer of the Year — recognised for precisely these contributions to carbon-epoxy construction and hybrid propulsion across the global production boatbuilding industry.
About J&J Design
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The full development scope — concept, branding, naval architecture, exterior and interior design, structural engineering, build process design, prototyping, and CNC mould tooling. Power and sail, 20 to 80 feet. The office has completed over 400 projects for boatbuilders across 28 countries, with more than 75,000 boats built worldwide from J&J designs.
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Yes, and has done for over two decades. J&J pioneered carbon fibre epoxy prepreg in production cruising yachts and developed the Greenline hybrid diesel-electric-solar powerboat series. The office also designed the Shipman 59 Hybrid Solar Carbon in 2014. These contributions earned the founders the Designer of the Year award at the Boat Builder Awards Amsterdam in 2024.
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Forty years in continuous operation. Over 400 completed projects, 65+ boatbuilder clients, 28 countries, 135+ Boat of the Year and Design Awards. The office was established in 1983 by brothers Japec and Jernej Jakopin — the same principals who lead it today.
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That is the standard model. Design, structural analysis, and production engineering run as one integrated process. CNC plug and mould production is available through sister company RnD d.o.o. in Bled, Slovenia — two 20-metre 5-axis machines, over 2,000 m² of work area, 40 CNC technicians.
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Email info@jnj.design or call +386 40 671 001. The office responds within 1–2 business days and is experienced in remote project collaboration across Europe, North America, and Asia-Pacific.
TOOLING
Reduced development costs, shortened time to market, improved quality.
Two 20 m 5-Axes Milling Machines
With Over 2000 m² of Work Area
40 CNC and Shop Floor Technicians
Please visit our sister company RnD to learn more about tooling!
