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April 2011
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Who we are..
Self-build catamaran designers.
Mid Cornwall
About Us

James Wharram
In the mid 50's, based on his research into ancient Polynesian boat design, James Wharram built the first off-shore Catamaran in Britain and sailed it out into the Atlantic. While the world's yachting community were busy dismissing such a design as a worthy sea-going vessel, James was landing his 23'6" 'Double Hulled Canoe' in the West Indies.

There he built a second 40' Polynesian style Catamaran and sailed it back to the UK accompanied by two young German girls -being the first to sail a catamaran across the North Atlantic.

These amazing Trans-Atlantic crossings and the follow up book "Two Girls, Two Catamarans" has etched the name 'James Wharram' into the annals of yachting history.

The quality of the Wharram self-build catamarans is reflected in their popularity, excellence of craftmanship and 'sound sailing qualities'. 50 years on - with 10,000 sets of plans sold and thousands turned into proud vessels - Wharram 'Cats' can be seen in harbours across the world maintaining the highest reputation for surviving wind and wave.


Contact name
Hanneke Boon
Address 1
Greenbank Rd
Address 2
01872 864792
Type of business
Green Suppliers
Website URL

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In July I described how our 27ft Amatasi emerged as Classic Boat’s prize-winning eco-design sailing craft. At the beginning of December our first volunteers, John and Michael began clearing out our work shed to prepare for the Amatasi build (anyone who has the space to save/store things can imagine how cluttered our shed had become)! John from Ireland is a mature student of Falmouth Marine School and a superb wood craftsman. Michael is from Holland and is a Martial Arts expert and sailing enthusiast. 

James Wharram

Classic Boat’s prize-winning eco-design sailing craft - designed in Cornwall