Rethana 27 Information, Review, Specs

Sailing Performance & Handling

The Rethana 27 is characterized by its moderate displacement (approximately 2,300 to 2,500 kg) and a conservative masthead sloop rig. With a sail area of roughly 34 square meters, the boat is not a light-air flyer but demonstrates its strengths as the breeze freshens. Its ballast ratio, often exceeding 40% depending on the keel configuration, provides a stiff, predictable motion in a seaway.

The boat was offered in two primary underwater profiles: a fixed fin keel for stable coastal work and a lifting keel (Kielschwerter) version. The latter is particularly prized for "mud-hopping" and exploring the shallow estuaries of the Wadden Sea. In editorial testing by German nautical publications like Yacht.de, the design has been noted for its directional stability and balanced helm. The relatively deep rudder provides sufficient bite even when the boat is heeled, though the hull's displacement nature means it will reach a hull speed of approximately 6.3 knots and resist being pushed much further. Its tracking is reliable, making it an excellent platform for solo sailors or couples who prefer a "hands-off" feel on longer passages.

Interior Comfort & Variations

For a boat of 27 feet, the Rethana 27 offers an interior that prioritizes "Schiffigkeit"—a German term denoting a traditional, ship-like feel. The layout typically features a forward V-berth, a central salon with two longitudinal settees, and a compact galley located near the companionway for optimal ventilation. The use of dark wood veneers and solid trim was standard, reflecting the builder's commitment to a more substantial aesthetic than the "plastic" interiors of its competitors.

The model saw several evolutions during its production run, which spanned from the late 1970s through the mid-1980s. While the hull remained consistent, the interior cabinetry was refined in later "Mark II" versions to include more ergonomic storage and improved head compartments. Sibling models include the smaller Rethana 24 and Rethana 25, which utilized similar construction methods but lacked the 27's standing headroom (approximately 1.80m in the main cabin). The rarest of the family is the Rethana 30, which extended the concept into a more dedicated offshore cruiser.

Known Issues & Buyer’s Checklist

Prospective buyers should approach the Rethana 27 with a focus on its age-related maintenance, specifically regarding the following areas:

• Keel Pivot and Cable (Lifting Keel Models): On versions equipped with the swing keel, the pivot pin and the lifting cable are critical failure points. Wear in the pivot can cause "clunking" while at anchor or under sail, and the cable should be inspected for "meat hooks" or corrosion.
• Window Seals: The original aluminum-framed windows are prone to leaking as the sealant dries out over forty years. Evidence of water staining on the interior woodwork below the ports is a common sign that a re-bedding project is required.
• Deck Core Integrity: Like many GRP boats of this era, the Rethana 27 uses a balsa or foam core in the deck for stiffness. Buyers should check for "soft spots" or delamination, particularly around high-load fittings like the chainplates and stanchion bases.
• Engine Serviceability: Many units were originally fitted with Farymann or small Bukh diesel engines. While extremely reliable, parts for older Farymann models can be difficult to source. A well-maintained Volvo Penta or Yanmar repower significantly adds to the vessel's value.

Community & Resources

The primary hub for technical data and owner support remains in Germany. While there is no longer a dedicated factory presence, the community is active within broader European sailing organizations. Technical discussions and original specifications can often be found through the archives of the Freundeskreis Klassische Yachten (Circle of Friends of Classic Yachts), which occasionally documents well-preserved Rethanas as examples of early GRP heritage.

The Verdict

The Rethana 27 remains a stalwart choice for sailors seeking a robust, trailerable cruiser with a traditional soul.

Pros:

• Robust Construction: Heavy-duty GRP layup that handles coastal chop with ease.
• Trailerable: The 2.5m beam allows for easy transport between cruising grounds.
• Traditional Interior: High-quality woodwork creates a cozy, seaworthy atmosphere.
• Shallow Draft Options: The lifting keel version is ideal for tidal or inland waters.

Cons:

• Weight: Heavier than modern equivalents, requiring more wind to reach peak performance.
• Age: Most units will require updates to standing rigging and electronics.
• Speed: Not competitive in PHRF or club racing against lighter, modern designs.