The founders of Jachtwerf Kuiper sailing a Kuiper IF
The Swedish Icon, refined.

The Marieholm IF is one of the most iconic Scandinavian daysailers. Designed by Swedish designer Tord Sundén, it is admired for its timeless lines and honest performance.

At Jachtwerf Kuiper, we specialize in high-quality refit and refinement of the Marieholm IF. By reimagining the interior and rebuilding each boat with care, we created the Kuiper IF.

A tribute to heritage. Built for today.
Explore the Kuiper IF

the kuiper-if

Iconic design

The Marieholm IF – also known as the IF-boat – was designed by Tord Sundén as a capable family cruiser, and is renowned for its elegant long keel and exceptional seaworthiness. Today, its timeless design lends itself perfectly to a refined daysailer, offering pure, balanced sailing with space for two to stay the night.

Reimagined comfort

With the Kuiper IF, we bring this iconic design into the 21st century. Through a complete interior refit and careful restoration of existing Marieholm IF hulls, we create a lighter, more functional space – designed for modern daysailing while respecting the boat’s original character.

Close to nature

No noise, no unnecessary complexity. Just wind, water, and craftsmanship – with room for the essentials. The Kuiper IF is designed for those who value simplicity, quality, and a deeper connection to sailing, offering the freedom to stay out just a little longer while giving existing boats a second life.

Let's get in touch to talk about a refit, rebuild and renewal of your Marieholm IF.