Jongert 21 S Information, Review, Specs

Sailing Performance & Handling

The Jongert 21 S is a heavy-displacement cruiser that prioritizes stability and momentum over light-air agility. With a displacement often exceeding 50 tons, the vessel possesses a high Displacement/Length ratio, which translates to a remarkably smooth motion in a seaway. Unlike lighter modern production boats that tend to "skate" over waves, the 21 S punches through them, providing a dry and secure experience for the crew. The ketch rig is the defining feature of its handling characteristics; by splitting the sail area between the main and mizzen masts, the boat allows for a wide variety of sail combinations. This is particularly advantageous in heavy weather, where "reefing by the numbers"—dropping the mainsail and sailing under jib and mizzen—keeps the boat balanced and easy to steer.

Under power, the 21 S typically relies on a heavy-duty Mercedes or MTU diesel engine. Handling in tight quarters can be challenging due to the long keel and significant windage of the ketch rig; however, most hulls were equipped with powerful bow thrusters to mitigate this. Owners often note that while the 21 S is not a racer, it excels in "tradewind" conditions where its weight and sail plan allow it to maintain consistent speeds for days on end without straining the autopilot or the crew.

Interior Comfort & Variations

The interior of the Jongert 21 S is a showcase of traditional Dutch craftsmanship, often finished in high-gloss mahogany or teak. The layout is centered around the shipyard's famous "Deck Saloon" concept, which provides a panoramic view of the horizon while remaining protected from the elements. This raised seating area serves as the social hub of the vessel, bridging the gap between the cockpit and the lower living quarters.

The standard configuration usually includes a massive full-beam owner’s suite aft, a hallmark of the Jongert S-series. This cabin frequently features a private companionway to the aft deck, a large ensuite head, and extensive hanging lockers. Forward of the main salon, the 21 S typically offers two guest cabins and a dedicated crew area in the bow. Sibling models, such as the Jongert 20 S and 22 S, share this DNA; however, the 21 S is often cited for having a more ergonomic galley-down arrangement that provides better bracing for the cook while underway. The level of insulation against noise and temperature is exceptional, making the interior feel more like a luxury estate than a traditional sailboat.

Known Issues & Buyer’s Checklist

Prospective buyers of a Jongert 21 S must approach the survey with a focus on its metal construction and complex systems. While the hulls are over-engineered, age is the primary factor for these vessels.

• Steel Corrosion: The most critical inspection point is the hull's interior, specifically the "dry" bilge areas under the tanks. Rust can form where water traps against the frames. Buyers should demand an ultrasonic thickness test of the hull plating, particularly around the waterline and the base of the keel.
• Teak Deck Longevity: Jongert decks were originally thick and well-laid, but many 21 S models are now on their second or third set of teak. Check for "popping" screws and thinning planks, as a full replacement on a vessel of this size is a significant capital expense.
• Hydraulic Systems: These boats often use extensive hydraulics for furling sails and winches. Look for "milky" hydraulic fluid (indicating water contamination) and inspect all hoses for cracking or leaks, as these systems are vital for shorthanded sailing.
• Stainless Steel Bleeding: It is common to see rust streaks from stainless steel fittings (like stanchions and cleat bases) onto the paint. While often cosmetic, it can indicate a breakdown of the bedding compound, which could lead to moisture trapped against the steel hull or aluminum superstructure.

Community & Resources

Owners and enthusiasts of these yachts are supported by the Jongert Owners Club, a relatively private but active group that shares technical knowledge and organizes rallies. Because Jongert hulls were often semi-custom, technical documentation is usually vessel-specific. The shipyard remains active in Wieringerwerf and provides refit services and archival support for legacy models, ensuring that even forty-year-old 21 S hulls can be modernized to contemporary standards.

The Verdict

The Jongert 21 S is an "investment-grade" cruiser designed for the sailor who values security and luxury above all else. It is a vessel built for a different era of yachting, where the goal was to arrive in port with the crystal glassware intact regardless of the weather outside.

Pros:

• Oceanic Capability: Exceptional stability and heavy-weather performance.
• Timeless Aesthetics: The classic ketch rig and clipper bow command respect in any marina.
• Unmatched Joinery: The interior woodwork is of a standard rarely seen in modern builds.
• Resale Value: Jongert yachts tend to hold their value better than almost any other steel production boat.

Cons:

• High Maintenance: Steel hulls and complex systems require a rigorous and expensive maintenance schedule.
• Light Air Performance: The heavy displacement makes the boat sluggish in winds under 10 knots.
• Operating Costs: The scale of the rigging and machinery requires a significant annual budget or a capable crew.