James Wharram Designs

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

Boat Building Plans

Building Plans Extras Study Plans Books Films Merchandise Papers & Articles Limited Edition

A Course In Boat Building

Complete, clear and detailed plans to build your own Wharram Catamaran, that have often been described as a ‘course in boat building’. All Wharram building plans are drawn for the first time builder, so anyone with a modicum of practical ability can build one of our designs. Wharram designs are all based on decades of actual building and sailing experience of the boats, so you can be confident in its sailing capabilities and safety.

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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