TK1's are 4750mm long by 590mm wide.

These hulls feature good stability for their class and have enough freeboard to cope well with moderately choppy conditions.

Plans for either version of the TK1 consist of a B1 sheet with construction, arrangement, rudder and other details, and full size templates for mould stations.

Pictured below is a sketch drawing of the marathon TK1 kayak.

Pictured above, a marathon TK1, (so much for the golf clubs; this is a much better thing for the buggy to carry)