| Fetchwikidata: | ALL |
| Onlysourced: | true |
| RS 21 Keelboat | |
| Designer: | Jo Richards Guy Whitehouse RS Sailing |
| Location: | British |
| Draft: | 1.38m (04.53feet) |
| Displacement: | 650kg (1,430lb) |
| Hulls: | Monohull |
| Construction: | Eco-Friendly Composite |
| Loh: | 6.67m (21.88feet) |
| Lwl: | 6.29m (20.64feet) |
| Beam: | 2.2m (07.2feet) |
| Engine: | Outboard |
| Appendages: | Bulbed Keel / Single Rudder |
| Keel Type: | Lifting Keel |
| Rigs: | Sloop |
| Sailarea Main: | 16.2m2 |
| Sailarea Headsail: | 8.4m2 |
| Sailarea Gen: | 40m2 |
| Rating: | 0.949 IRC |
The RS 21, first launched in 2018[1] by RS Sailing and is a one design keelboat. Design for between 3 and 5 people to race competitively. The class gained World Sailing class status in 2021 and held it first recognised World Championship.[2] With the initial fleet in Europe being joined by fleets in North America [3] the class continues to grow. A detuned "club" version of the boat is available for sale training and fleet charter use.