James Wharram Designs

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

Study Plans

Building Plans Study Plans Books Merchandise Writings & Lore

Find the Right Boat for You

The Wharram Design Book is the best starting point if you are still exploring the full design range. It gives an overview of each self-build model, introduces the Wharram boat builder’s mindset, and helps you narrow down which boats may suit your needs, dreams and sailing plans. It is available as a digital download.

A Study Plan then takes you deeper into a particular design. With large plan sheets, design notes, photographs, performance information, article extracts, FAQs and a materials list to help estimate local building costs, it gives you a clearer sense of the boat before you move on to the full Boat Building Plans.

Study Plans are only available as digital downloads. You can print them at home if you wish.

The Mana 24 design does not have a Study Plan, comprehensive design information is freely available.

Discounts are applied automatically when you add multiple Study Plans to your basket:

Two Study Plans: 10% off
Three Study Plans: 20% off
Four or more Study Plans: 30% off

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.

Take a Look