The S2 7.9, originally called the Grand Slam 7.9, is an American sailboat that was designed by Graham & Schlageter as a one-design and Midget Ocean Racing Club (MORC) racer-cruiser and first built in 1979.
[8] The S2 7.9 is a recreational keelboat, built predominantly of hand laid fiberglass with an end-grain balsa core, with wood trim.
All models have a raked stem, a plumb transom and a transom-hung, pivoting rudder controlled by a tiller.
"[12] Brook Berth wrote in Sailing Magazine, "the S2 7.9 is a nicely designed, well-built one-design racer that can be cruised on short trips.
"[13] Jack Hornor wrote in The SpinSheet, "the S2 7.9 provides exhilarating sailing performance and has the added benefit of sufficient accommodations to make occasional weekend cruises or overnight races tolerable at least.
"[8] A Sailing World review called the boat an "eminently sailable family cruiser-racer.