Sailing Performance & Handling
Drawing on the design principles of Philippe Briand, the Piana 37 is characterized by relatively slim hulls and a high bridge deck—a configuration intended to minimize the "slamming" common in early multihull designs. With a displacement that was considered light for its era due to the shipyard’s use of sandwich composite construction, the boat exhibits a high power-to-weight ratio. The boat handles with more agility than modern "condo-marans," offering better feedback through the helm.
Technical interpretations of the hull suggest a design optimized for reaching and downwind performance. Owners often report that the Piana 37 can maintain high average speeds in light to moderate winds, often outpacing similar-sized monohulls of the same period. However, like many catamarans of this vintage with fixed fins rather than daggerboards, its windward ability is functional but not exceptional, requiring a slightly wider tacking angle to maintain momentum. The tracking is generally described as stable, making it a predictable platform for long-distance cruising.
Interior Comfort & Variations
Despite its focus on performance, the Piana 37 provides a functional living platform that utilizes the full width of its 6.10-meter beam. The standard layout typically features a "galley-up" configuration in the bridge deck saloon, which allows for panoramic views and social interaction with the cockpit—a layout that was innovative at the time and has since become the industry standard.
Accommodation varies by build, but most versions were produced with three or four cabins located in the hulls. In the three-cabin "Owner" version, one hull is dedicated to a larger master suite and head, while the other houses two guest cabins. The interior finish usually reflects the era's preference for functional woodwork and molded liners. A smaller sibling, the Piana 30, was also produced by Naval Force 3, utilizing similar design language on a scaled-down platform to cater to coastal sailors and weekenders.
Known Issues & Buyer’s Checklist
Given that the Piana 37 was constructed using sandwich composite materials in the late 1980s and early 90s, the primary concern for any prospective buyer is the integrity of the core.
- Deck Core Integrity: It is essential to check for soft spots on the deck and cabin top. Moisture ingress around stanchions, cleats, and windows can lead to delamination of the balsa or foam core.
- Bridge Deck Stress: Inspect the areas where the hulls join the bridge deck for stress cracking or signs of structural fatigue, especially if the boat has been used for extensive offshore passages.
- Rudder Bearings: The mechanical steering systems and rudder bearings in these older French builds are prone to wear; excessive play at the helm often indicates a need for bearing replacement or linkage adjustment.
- Window Seals: The large wrap-around saloon windows are a signature feature but are notorious for developing leaks as the original sealant degrades over three decades.
- Osmosis Check: While Naval Force 3 had a good reputation for composite work, any vessel of this age should be surveyed for osmotic blistering in the hulls below the waterline.
The Verdict
The Piana 37 remains a compelling choice for sailors who prioritize sailing sensations and offshore capability over maximum interior volume.
Pros:
- High bridge deck clearance significantly reduces slamming in heavy seas.
- Designed by Philippe Briand, offering genuine performance pedigree.
- Lightweight composite construction makes for a responsive and fast cruiser.
- Timeless aesthetic that avoids the "boxy" look of modern production catamarans.
Cons:
- Aging composite cores require a rigorous and professional survey.
- Less interior volume and payload capacity compared to modern 37-foot catamarans.
- Limited availability on the secondary market due to relatively low production numbers.
