Friendship 21 Information, Review, Specs

Sailing Performance & Handling

The influence of Koos de Ridder is immediately apparent in the boat's underwater profile and fractional rig. Most Friendship 21s were equipped with a lifting keel (swinging centerboard) system, which allows the draft to be reduced to just 0.30 meters, though a fixed fin keel version was also produced for those prioritizing stiffness. Under sail, the boat is described as "light and nervous" in a positive sense, responding instantly to rudder movements. According to technical archives from the Jachtclub Friendship, the boat carries a relatively large sail area for its displacement, giving it excellent light-wind performance.

The fractional 7/8 rig provides a high degree of tuneability, allowing sailors to depower the mainsail through backstay tension—a feature often missing on smaller cruisers of this size. When the wind picks up, the boat’s 2.50-meter beam provides sufficient initial stability, though the lifting keel version requires early reefing to maintain a comfortable heel angle. Its handling characteristics are often compared to a large dinghy, making it an exceptional platform for sailors transitioning from racing skiffs to overnight cruising. The outboard engine is typically mounted on a transom bracket, which keeps the weight out of the ends of the boat but can lead to cavitation in a following sea.

Interior Comfort & Variations

For a vessel with a length overall of just over six meters, the Friendship 21 offers a surprisingly functional interior, achieved through an open-plan layout that avoids the "claustrophobic" feel of partitioned cabins. The "Mainfesta" or "Sport" variants often featured a simplified interior to save weight, but the standard cruising model includes four berths: a double V-berth forward and two full-length settees that extend under the cockpit seats.

The joinery is typically finished in light oak or teak veneers, a hallmark of the Dutch building style that elevates it above the utilitarian fiberglass finishes of French competitors from the same era. Headroom is limited, as is standard for this class, requiring a seated posture for most tasks. However, the inclusion of a dedicated (albeit small) galley area with a single-burner stove and a sink makes multi-day trips feasible. The absence of a fixed interior bulkhead between the saloon and the forward berth maximizes the perception of space and allows for better ventilation.

Known Issues & Buyer’s Checklist

Prospective buyers should focus their inspection on the lifting keel mechanism, which is the boat’s most complex mechanical component. Over time, the pivot bolt can wear, leading to a "clunking" sound when at anchor or under sail. The stainless steel cable and the winch used to raise the board should be inspected for fraying or corrosion, as a failure here can result in the board dropping unexpectedly.

Another area of concern is the deck-to-hull joint and the chainplates. Because the Friendship 21 is often sailed hard, the stress on the shrouds can lead to hairline fractures in the gelcoat around the chainplate attachments. If left unsealed, these can allow moisture to penetrate the balsa or foam core of the deck. Additionally, the rudder bushings on this model are known to develop play; while not a structural failure, it can significantly diminish the "surgical" feel of the de Ridder helm. Finally, ensure the windows, which are typically acrylic and screwed/glued to the coachroof, are not crazing or leaking, as the curved surfaces can be difficult to reseal effectively.

Community & Resources

The Friendship 21 benefits from one of the most active owner associations in Northern Europe. The Jachtclub Friendship serves as a central repository for technical drawings, original brochures, and maintenance tips. The club hosts annual "Friendship Days" in the Netherlands, where owners of the 21 through the 35 gather for rallies and technical seminars. This community support is a significant asset for new owners, providing a direct line to historical knowledge regarding parts and original factory specifications.

The Verdict

The Friendship 21 is a masterclass in small-boat naval architecture, offering a blend of Dutch build quality and performance-oriented design that remains competitive decades after its launch.

Pros:

• Exceptional Versatility: The lifting keel makes it an ideal choice for drying out on sandbanks or exploring shallow inland waterways.
• High Build Quality: Superior interior finish and fiberglass work compared to most mass-produced 21-footers.
• Responsive Handling: Designed by Koos de Ridder to sail like a performance boat, not a bathtub.
• Strong Resale: The "Friendship" brand remains highly respected in the European brokerage market.

Cons:

• Keel Maintenance: The lifting mechanism requires periodic servicing and can be a "blind spot" for maintenance.
• Limited Headroom: Taller sailors will find the interior cramped for anything beyond sleeping and cooking.
• Weight Sensitivity: Performance suffers significantly if overloaded with heavy cruising gear or large outboard engines.