Solaris 37 (1981) Information, Review, Specs

Sailing Performance & Handling

The Solaris 37 is characterized by its heavy-displacement approach to multihull sailing. While modern catamarans often utilize a beam-to-length ratio nearing 1:2, the Solaris 37 is significantly narrower, which contributes to its predictable, monohull-like tracking in a seaway. Handling is defined by its solid bridge deck construction; the lack of a forward trampoline means the boat does not "shudder" when hitting head seas, though it does result in more weight in the ends. This can lead to a hobby-horsing motion if the boat is overloaded forward.

Under sail, the boat is not a high-speed flyer but a reliable passage-maker. With a moderate Sail Area to Displacement (SA/D) ratio, it requires a decent breeze to overcome its wetted surface area. However, once established on a reach, the Solaris 37 is known for its "sea-kindliness," a term frequently used by owners to describe its ability to maintain a steady course with minimal helm fatigue. The use of low-profile keels rather than daggerboards simplifies handling and allows for easy beaching, though it does limit pointing ability to roughly 50 degrees off the true wind. Owner anecdotes from the Solaris Owners Club suggest that the boat feels most at home in Force 4 to 6 conditions, where its mass provides a sense of security that lighter cats lack.

Interior Comfort & Variations

The interior of the Solaris 37 is a product of "pod" design philosophy, where the bridge deck serves as a centralized social hub. The saloon typically features a large U-shaped settee with panoramic views through the wrap-around windows—a feature that was revolutionary in 1981. Because the beam is narrower than contemporary cats, the transition from the saloon down into the hulls feels more integrated.

Configurations usually consist of three or four cabins. In the three-cabin "Owner’s Version," one hull is dedicated to a larger master suite and a spacious head, while the other hull contains two guest cabins. The craftsmanship reflects the British standards of the early 80s, utilizing heavy teak veneers and solid wood trim. Ventilation is a noted highlight, as the vertical windows in the saloon often feature opening ports that allow for cross-flow while at anchor.

The Solaris 37 saw several internal evolutions during its production run. Later hulls often featured improved engine access, moving the engines further aft to reduce noise in the living quarters. The model eventually evolved into the Solaris Sunrise 36 and the Solaris 38, which utilized the same basic hull lines but refined the deck molding to provide more streamlined profiles and updated interior materials.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a 1980s Solaris 37 with a focus on structural longevity rather than modern amenities. As a heavy GRP build from the UK, several era-specific issues are common:

• Osmosis and Gelcoat Blistering: Early Solaris models were built before the widespread use of vinylester resins. Many hulls have undergone or will require epoxy treatment to manage osmotic blistering.
• Deck Core Integrity: The side decks and bridge deck often utilize a balsa or foam core. Inspect for "soft spots" or delamination, particularly around stanchion bases and the windlass, where water ingress can rot the internal core.
• Window Seals: The large wrap-around saloon windows are prone to leaking if the original seals have hardened. Replacing these is a labor-intensive task due to the curvature of the molding.
• Bulkhead Bonding: Check the integrity of the secondary bonding where the main bulkheads meet the hulls. On older boats that have seen heavy offshore use, these joints can show signs of movement or hairline cracking.
• Propulsion Systems: Many Solaris 37s were fitted with twin Sonic Sillette outdrives or early Bukh/Volvo Penta sail drives. The Sillette drives require specific maintenance of the lifting mechanism and universal joints, which can be difficult to source parts for today.

Community & Resources

The primary resource for this model is the Solaris Owners Club, an active association that provides technical manuals, original brochures, and a registry of surviving hulls. The club is particularly useful for owners seeking advice on retrofitting modern engines or repairing the specific GRP layups used by Solaris Marine in the early 1980s.

The Verdict

The Solaris 37 is a "sailor’s catamaran" that prioritizes structural integrity and blue-water capability over the "floating apartment" aesthetic of modern multihulls. It is an excellent choice for a couple looking for an affordable, seaworthy platform for coastal trekking or trade-wind crossing.

Pros:

• Exceptionally robust construction suitable for offshore passages.
• Solid bridge deck provides a secure, dry platform and eliminates trampoline maintenance.
• Predictable handling and excellent tracking in heavy weather.
• Beachable keels allow for exploration of shallow anchorages and easy maintenance.

Cons:

• Narrower beam results in less living space than modern catamarans of the same length.
• Heavy displacement limits performance in light air (under 10 knots of wind).
• Typical 1980s maintenance requirements (osmosis, teak wear, aging systems).
• Limited bridge deck clearance can lead to "slamming" in choppy head seas.