[1][3][4][5] The Nonsuch 33 is a small recreational keelboat, built predominantly of fiberglass.
It has a cat rig, an unstayed mast with a wishbone boom, a plumb stem, a vertical transom, an internally-mounted spade-type rudder controlled by a wheel and a fixed fin keel.
[1][3] The boat has been fitted with a variety of small diesel engines including the Japanese Yanmar 3JH2T-BE diesel engine, the Universal M35 and the Volvo MD2040.
The fuel tank holds 40 U.S. gallons (150 L; 33 imp gal) and the fresh water tank has a capacity of 96 U.S. gallons (360 L; 80 imp gal).
[1][3] The design has a PHRF racing average handicap of 171 with a high of 171 and low of 168.