RS 21 Information, Review, Specs

Make
RS
Model
21
Builder
RS Sailing
Designer
Richards/Whitehouse/RS Sailing
Number Built
Production Year(s)
2018 - ??

The RS 21 is a definitive departure from the traditional "arms race" often found in sportsboat racing, focusing instead on parity, sustainability, and the burgeoning popularity of club-based fleet sailing. Launched in 2018 by RS Sailing, this 6.34-meter keelboat was engineered to provide a balanced platform that rewards tactical prowess over financial investment. Built using eco-friendly materials, including bio-derived resins and recycled core materials, the RS 21 was awarded the Sail Magazine Best Boats Award for its innovative approach to modern keelboat design. Its primary mission is to serve as a robust, high-performance vessel for sailing leagues, training centers, and private owners who prioritize ease of use and close-quarters competition.

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Sailing Performance & Handling

On the water, the RS 21 is characterized by a high degree of stability and a remarkably responsive helm. Unlike many older sportsboat designs that can feel "twitchy" or overpowered in a breeze, the RS 21 utilizes a significant ballast ratio—roughly 50% of its 650kg displacement is held in the keel—to provide a secure feel even when pushed. This stability allows for a wider crew weight range, making it accessible to youth teams and mixed-gender crews.

The boat’s sail plan is modern and efficient, featuring a large mainsail and a powerful gennaker flown from a retractable carbon bowsprit. According to technical assessments by Yachting World, the hull shape is optimized for both light-wind displacement speeds and high-speed planing in heavier conditions. The deep, high-aspect-ratio rudder provides exceptional grip, preventing the "wipe-outs" common in older designs during downwind bursts. The inclusion of a dedicated "pay-to-play" configuration—often featuring a smaller, more durable club rig—ensures that the boat remains manageable for less experienced sailors while the "Pro" rig offers the performance required for international-level competition.

The RS 21 has quickly become the backbone of the international "League" racing format. It is the official boat for the Sailing Champions League, a prestigious European series that pits the continent's best yacht clubs against one another in a standardized fleet. This high-profile adoption has cemented its status as the premier choice for stadium-style racing. Additionally, the model’s focus on environmental impact earned it a nomination for the World Sailing 11th Hour Racing Sustainability Award, highlighting the manufacturer's use of sustainable flax fibers and recycled PET cores in its construction process.

Known Issues & Buyer’s Checklist

Prospective buyers and fleet managers should focus on several technical areas specific to the RS 21's unique design features:

  • Electric Drive System: One of the RS 21’s most innovative features is the optional integrated Torqeedo electric motor, which utilizes a unique retractable pod system. Buyers should inspect the lifting mechanism for smooth operation and ensure the propeller seals are intact to prevent drag when retracted.
  • Keel Lift Mechanism: As a lifting-keel boat designed for easy trailering, the internal winching system and the keel bolt locking hardware should be checked for wear. Any lateral movement in the keel trunk while sailing suggests a need for shim replacement.
  • Gennaker Retrieval Chute: The boat uses a large bow chute for the gennaker. Frequent racing can lead to wear or "snag points" around the mouth of the chute. Inspect the interior of the tube for any fiberglass burrs that could tear high-performance nylon sails.
  • Deck Hardware Load Points: Because the boat is often used in high-intensity short-course racing, the blocks and cleats (typically Harken) undergo high cycle counts. Check the mainsheet swivel base and the jib track cars for fatigue or salt-water corrosion.

Community & Resources

The boat is supported by the RS21 International Class Association, which manages the class rules and organizes a robust calendar of World and Continental Championships. For technical support and spare parts, owners typically rely on the RS Sailing Store, which provides detailed exploded-view diagrams and factory-spec replacement components, ensuring that boats can be maintained to the strict one-design standards required for fleet racing.

The Verdict

The RS 21 is a masterclass in modern, egalitarian keelboat design, offering a "plug-and-play" experience that is rare in the high-performance sector.

Pros:

  • Exceptional Parity: One-design tolerances are strictly managed, ensuring races are won by sailors, not equipment.
  • Ease of Logistics: The lifting keel and removable rig make it one of the easiest 20-footers to transport and store.
  • Sustainability: Leading the industry in the use of bio-resins and recycled materials.
  • Versatility: Capable of being sailed by two to four people with equal enjoyment.

Cons:

  • Niche Interior: With no cabin or sheltered space, it is strictly a daysailer and racing machine.
  • Motor Complexity: The optional electric pod, while innovative, requires more maintenance than a simple outboard bracket.
  • Price Point: The high-tech construction and premium hardware result in a higher initial cost than older, second-hand sportsboat classes.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Bulb
Rudder
1x Transom-Hung
Ballast
730 lbs
Displacement
1433 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
21 ft
Waterline Length (LWL)
-
Beam
7.32 ft
Draft
4.53 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
264.79 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
33.33
Ballast / Displacement Ratio
50.94
Displacement / Length Ratio (D/L) Ratio
Comfort Ratio
Capsize Screening Formula
2.6
Hull Speed
— kn