S2 5.5
| Development | |
|---|---|
| Designer | Don Wennersten |
| Location | United States |
| Year | 1982 |
| No. built | 70 |
| Builder(s) | S2 Yachts |
| Role | Racer-Day sailer |
| Name | S2 5.5 |
| Boat | |
| Displacement | 600 lb (272 kg) |
| Draft | 4.00 ft (1.22 m) with centerboard down |
| Hull | |
| Type | monohull |
| Construction | fiberglass |
| LOA | 18.00 ft (5.49 m) |
| LWL | 16.25 ft (4.95 m) |
| Beam | 7.67 ft (2.34 m) |
| Hull appendages | |
| Keel/board type | centerboard |
| Rudder(s) | transom-mounted rudder |
| Rig | |
| Rig type | Bermuda rig |
| I foretriangle height | 19.50 ft (5.94 m) |
| J foretriangle base | 6.00 ft (1.83 m) |
| P mainsail luff | 23.50 ft (7.16 m) |
| E mainsail foot | 10.00 ft (3.05 m) |
| Sails | |
| Sailplan | fractional rigged sloop |
| Mainsail area | 117.50 sq ft (10.916 m2) |
| Jib/genoa area | 58.50 sq ft (5.435 m2) |
| Total sail area | 176.00 sq ft (16.351 m2) |
The S2 5.5, also called the Grand Slam 5.5, is an American sailing dinghy that was designed by Don Wennersten as a racer and day sailer and first built in 1982. The designation indicates the approximate length overall in meters.
The design was the smallest boat S2 Yachts produced and its only dingy model.