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Classic Designs

Hanneke Boon drawing boat plans in a studio

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. They are all based on decades of actual building experience of the boats, so you know it will work.

The Classic Designs were the first range of Wharram catamarans, designed in the 1960s and 70s, based on the sea experience of James Wharram's pioneering ocean crossings. They are sturdy, very stable, but relatively basic in design. They are built using simple plywood construction over a backbone and bulkhead frame. The Building Plans for these designs are not as detailed as for the later designs, but as the construction is simple are still easy to follow.

The Classic Designs Building Plans follow a sequential drawing layout, drawn to scale on large sheets, showing the boat at different building stages and clearly showing which parts are added at each stage. They are accompanied by a written Building Sequence giving details of every stage of the construction. There are also written Building Instructions with advise on all aspects of the build, from advise on work shelters and the buying of timber and plywood, to encouragement for your first sail.

Design Improvement packages are available to update the Classic Designs, whether building new or renovating an existing design.

James Wharram Classic Designs Building Plans