Dehler 18 Roodkapje Information, Review, Specs

Sailing Performance & Handling

The Dehler 18 Roodkapje is celebrated for its spirited handling, functioning more like a large dinghy than a traditional keelboat. According to van de Stadt Design, the hull was optimized for both speed and safety, featuring a modern fractional rig with a powerful mainsail and a relatively small, non-overlapping jib. This configuration makes the boat easy to manage short-handed or by a small family.

With a displacement-to-length ratio that leans toward the lighter end of the spectrum, the boat is exceptionally responsive to trim. Owner anecdotes often highlight the boat's ability to track well upwind, aided by its high ballast-to-displacement ratio (nearly 40%), which is rare for a boat of this scale. The boat typically features a fixed keel with a lead bulb, providing a low center of gravity that translates to a stiff, "big boat" feel in a breeze. While it lacks the extreme surfing capabilities of modern sportboats, the Roodkapje is surprisingly fast on a reach and can maintain high average speeds that outperform many 22-footers from the same era.

Interior Comfort & Variations

Despite its diminutive 18-foot length, the interior of the Roodkapje is a masterclass in spatial efficiency. It features an enclosed cabin that provides four berths: a V-berth forward and two single settee berths extending aft. While headroom is limited to sitting height, the use of white gelcoat finishes and large side windows prevents the space from feeling claustrophobic.

There are two primary variations of the hull: the standard cruiser and a more performance-oriented "Racing" version. The racing variant often stripped out some of the internal amenities to save weight and featured a taller mast and deeper keel. The standard model usually includes a dedicated spot for a chemical toilet and a small sliding galley module, though most owners treat the interior as a "hard-sided tent" for weekend excursions rather than a long-term living space. The sibling relationship with the Dehler 22 is often noted, as the 18 was essentially a distilled version of that successful cruiser, sharing many of the same construction techniques and hardware.

Known Issues & Buyer’s Checklist

When inspecting a Dehler 18 Roodkapje, several model-specific areas require attention:

• Rudder Bearings and Blade: The transom-mounted rudder is a common point of wear. Buyers should check for excessive play in the gudgeons and pintles. On some older units, the rudder blade itself can show signs of water ingress or delamination.
• Deck Hardware Gaskets: Dehler utilized high-quality Lewmar or Harken hardware, but the gaskets under the stanchion bases and cleats are known to perish after three decades, potentially leading to core dampness if not re-bedded.
• Keel-to-Hull Joint: While the fixed bulb keel is robust, any signs of "smile" cracks at the leading edge of the keel joint should be scrutinized for evidence of a hard grounding, which can stress the internal grid structure.
• Mast Step Compression: Check the area around the mast step on the cabin top. Although the boat features an internal compression post, over-tensioning the rig over many years can sometimes cause slight deformation in the deck laminate.

Community & Resources

The Dehler 18 enjoys a dedicated following, particularly in Northern Europe. The Dehler Club Nederland and the Dehler Owners Association in Germany remain the primary hubs for technical documentation and class rules. Because the boat was designed by van de Stadt, technical drawings and original specifications are often still available through their official archives for owners looking to perform significant restorations.

The Verdict

The Dehler 18 Roodkapje is an ideal entry-point for sailors who want the performance of a modern hull with the safety of a ballasted keel. Its trailerability opens up a wide range of cruising grounds that are inaccessible to larger yachts.

Pros:

• Excellent performance-to-size ratio and planing potential.
• High-quality Dehler construction and van de Stadt design pedigree.
• Easily trailerable behind a standard family car.
• Surprisingly functional interior for weekend "micro-cruising."

Cons:

• Limited headroom and lack of standing room.
• Cockpit can become cramped with more than three adults.
• Availability is mostly limited to the European market.