The S2 7.3 is an Americantrailerablesailboat that was designed by Arthur Edmunds as a racer–cruiser and first built in 1978. The designation indicates the approximate length overall in meters.
The S2 7.3 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, a raked stem, a slightly reverse transom, an internally mounted spade-type rudder controlled by a tiller and a fixed fin keel or optional shoal draft keel that was designed by Graham & Schlageter. It displaces 3,250 lb (1,474 kg) and carries 1,300 lb (590 kg) of lead ballast.
The boat has a draft of 4.00 ft (1.22 m) with the standard keel and 2.83 ft (0.86 m) with the optional shoal draft keel.
The boat is normally fitted with a small 3 to 6 hp (2 to 4 kW)outboard motor for docking and maneuvering.
The design has sleeping accommodation for four people, with a double “V”-berth in the bow cabin and two straight settee berths in the main cabin. The galley is located on the port side abeam the companionway ladder and is equipped with a single sink. The head is located in the bow cabin on the port side, under the “V”-berth. Cabin headroom is 60 in (152 cm) and the fresh water tank has a capacity of 15 U.S. gallons (57 L; 12 imp gal).