S2 9.1
The S2 9.1 is an American sailboat that was designed by Graham & Schlageter as a Midget Ocean Racing Club (MORC) racer and first built in 1983. The boat was built in a variety of models. The designation indicates the approximate length overall in meters. Production
The design was built by S2 Yachts in Holland, Michigan, United States from 1983 until 1987 with 127 boats completed, but it is now out of production. Design
The S2 9.1 is a racing keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, a raked stem, a plumb transom, a transom-hung rudder controlled by a tiller and a fixed fin keel. The boat is fitted with a Japanese Yanmar 2GM diesel engine of  for docking and maneuvering. The fuel tank holds  and the fresh water tank has a capacity of . The first seven boats built were delivered to customers with a shorter mast, now known as the "9.1 SM". Owners of those boats thought the design was under-powered and a mast about  taller, along with sails with more area were used on later boats and became the standard for the class. Variants
S2 9.1 SM
This original short mast-equipped model has a mast that is approximately  shorter than the later standard mast. The boat has a length overall of , a waterline length of  and displaces . It has a draft of  with the standard keel. The design has a hull speed of . S2 9.1
This model has a length overall of , a waterline length of , displaces  and carries  of ballast. The boat has a draft of  with the standard fin keel. The design has a hull speed of . S2 9.1 SD
This shoal draft keel model has a length overall of , a waterline length of  and displaces . The boat has a draft of  with the shoal draft keel. The design has a hull speed of . S2 9.1 SE
This model has a length overall of , a waterline length of  and displaces . The boat has a draft of  with the standard keel. The design has a hull speed of . Operational history
The boat is supported by an active class club that organizes racing events, the S2 9.1 Meter North American One Design Class Association. In a 2002 review Bill Brockway reported in Sailing World, "one successful racer from Seattle says that his S2 9.1 tall-rig boat is a good all-rounder in medium air, best upwind at the upper end of a No. 1, and can sail well going deep on a downwind leg." See also
List of sailing boat types

References

Keelboats
1980s sailboat type designs
Sailing yachts
Sailboat type designs by Graham & Schlageter
Sailboat types built by S2 Yachts