James Wharram Designs

Unique self-build sailing catamarans, inspired by the double canoes of the Polynesians

Boat Building Plans

Building Plans Study Plans Books Merchandise Writings & Lore

A Course In Boat Building

Complete, clear and detailed Wharram Building Plans have often been described as “a course in boat building”. They are drawn with the first-time builder in mind, guiding anyone with a little practical ability through the process of building their own Wharram catamaran. Every design is based on decades of real building and sailing experience, giving you confidence in the boat’s safety, performance and seaworthiness as you begin your own build.

What’s In Our Plans?

In this video, we open up an example of a full set and walk you through the contents – from the large-scale technical drawings to the beautifully illustrated A3 sketchbook that guides you step by step through the build. If you’ve ever wondered about building your own Wharram, this video gives you a real, hands-on look at what to expect inside the plans.

Our Featured Item

Limited Edition Rongo Box Set

Limited edition Rongo memorabilia box set – includes building plans. Rongo was the first catamaran to have made the difficult voyage across the North Atlantic in 1959.

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