RS RS400 Information, Review, Specs

Sailing Performance & Handling

The sailing characteristics of the RS400 are defined by its "skiff-lite" philosophy. Because the boat relies on hiking rather than a trapeze, it rewards core strength and tactical finesse over extreme acrobatics. The hull's narrow waterline at low speeds reduces drag, while the flared topsides and wide beam provide the leverage necessary to hold down its generous sail area as the wind increases. According to technical insights from the RS400 Class Association, the boat is particularly noted for its responsiveness to rig tension and mast rake, allowing sailors to tune the boat for a wide range of crew weights, typically ranging from 130kg to 160kg.

Downwind, the RS400 transforms into a high-speed machine. The asymmetric spinnaker is launched from a bow chute, making it manageable for crews of varying experience levels. The boat tracks exceptionally well on a plane due to its high-aspect foils and well-balanced rudder, which provides significant feedback without becoming overly heavy. In heavy air, the RS400 requires careful management of the powerful mainsail to keep the boat flat, but its tendency to plane early means it often outpaces more traditional designs in the 15-to-20 foot range.

Popular Mentions & Media

The RS400 holds a significant place in British dinghy racing history, often cited as the catalyst for the "asymmetric revolution" in the UK during the 1990s. It has been a mainstay in major handicap events and the GJW Direct SailJuice Winter Series. The model's longevity and the strength of its racing circuit are frequently highlighted in editorial reviews by Yachting Monthly and Yachts & Yachting, where it is regularly lauded for its "modern classic" status and the high level of competition found at its National Championships, which often attract professional-caliber sailors.

Known Issues & Buyer’s Checklist

When evaluating a used RS400, potential buyers should focus on the structural integrity of the foam sandwich hull and the condition of the spars.

• Hull Stiffness: Older hulls, particularly those that have been campaigned heavily, can develop "soft spots" in the floor or around the cockpit. Press firmly across the deck and floor areas; any significant "give" or crunching sounds may indicate delamination or a degraded core.
• Mast Gate and Deck Support: The RS400 exerts significant loads on the mast gate and the deck around the partners. Check for stress cracks or evidence of repairs in this area, as well as the forestay attachment point.
• Foil Condition: The daggerboard and rudder are high-aspect GRP components. Check the trailing edges for nicks or splits and ensure the rudder stock is not warped, as this can lead to heavy steering.
• Spars and Rigging: The Pro-Bonsun mast should be checked for any signs of permanent bend or corrosion around the spreaders. Early boats featured different mast specifications; ensure the rig is class-legal for racing.
• The "Tram-Line" Crack: It is common to find small cosmetic gelcoat cracks along the join where the deck meets the hull. While often superficial, deep cracking should be inspected to ensure the bond remains intact.

Community & Resources

The RS400 is supported by one of the most active class associations in the world. The RS400 Class Association serves as the primary hub for technical manuals, tuning guides, and a robust second-hand market. The association also organizes an extensive racing calendar, ranging from local club "open" events to the European and National Championships. Technical support is also bolstered by the manufacturer through RS Sailing, which continues to provide parts and support for the fleet.

The Verdict

The RS400 remains one of the most successful double-handed performance dinghies ever built, offering a perfect middle ground between traditional hiking boats and high-octane skiffs.

Pros:

• Exceptional Resale Value: A strong class association and steady demand keep prices stable.
• Accessible Performance: High speeds and planing thrills without the learning curve of a trapeze.
• One-Design Integrity: Strict rules ensure that older boats can still win at the highest level.
• Social and Competitive: One of the most friendly yet competitive racing circuits in the UK and Europe.

Cons:

• Weight Sensitivity: Performance can drop significantly if the crew weight falls outside the ideal range for the conditions.
• Hull Longevity: Early foam-sandwich hulls can lose stiffness over decades of hard racing.
• Complexity for Beginners: While more stable than a skiff, it remains a "lively" boat that may be intimidating for novice sailors in a breeze.