The Tilapia 6.50, designed by the prolific French naval architect Pierre Rolland, represents a sophisticated departure from traditional coastal cruiser design. Conceived as a "neo-catboat," this 21-foot vessel aims to strip away the complexities of modern sailing—eliminating stays, shrouds, and headsails—in favor of a high-performance, minimalist configuration. Originally built by the French shipyard Morgère (and later associated with Atelier d'Interface Marine), the Tilapia 6.50 was part of a small family of cat-rigged cruisers that included the smaller Tilapia 550 and the larger Tilapia 700. While it shares a length-over-all with the famous "Mini 6.50" offshore racers, the Tilapia 6.50 is focused on accessible coastal speed and "beachable" versatility rather than grueling transatlantic competition.
Tilapia 6.50 Information, Review, Specs

- Make
- Tilapia
- Model
- 6.50
- Builder
- Ocqueteau
- Designer
- —
- Number Built
- Production Year(s)
- 2006 - ??
Sailing Performance & Handling
The performance profile of the Tilapia 6.50 is defined entirely by its unstayed carbon mast and large, full-battened mainsail. By utilizing a wishbone boom, the boat maintains an efficient sail shape across all points of sail without the need for a complex forestay or jib. According to editorial reviews by Bateaux.com, the carbon mast is engineered to flex at the tip during heavy gusts, effectively "self-reefing" or depowering the sail automatically. This feature provides a significant safety margin for solo sailors or families who may be intimidated by the sudden heeling typical of a rigid, stayed rig.
With a displacement of roughly 900kg and a deep pivoting keel that reaches 1.70m when fully deployed, the boat offers a surprisingly stiff and stable ride. The ballast-to-displacement ratio is generous for a boat of this size, allowing it to track well upwind despite the lack of a headsail. However, the true strength of the Tilapia is off-the-wind, where its light hull and high-aspect sail plan allow it to plane in moderate breezes. Owners often note that the helm is exceptionally balanced; because the rig is centered on a single mast, the common "weather helm" found in sloops is significantly reduced, making the boat effortless to steer even when overpowered.
Interior Comfort & Variations
For a boat of just 6.5 meters, the Tilapia offers a remarkably voluminous interior, largely due to the absence of a mast compression post. Since the unstayed mast is stepped into a heavily reinforced trunk at the deck and keel level, the salon remains entirely open and unobstructed. The layout typically features a double V-berth forward and two long settee berths running aft, providing sleeping accommodations for up to four adults.
Materials inside are functional and lightweight, favoring molded fiberglass liners with wood accents to keep maintenance to a minimum. While there is no standing headroom—a standard trade-off in the 20-foot class—the 2.50m beam creates a wide floor area that feels less cramped than contemporary competitors. The "galley" is usually limited to a dedicated space for a portable stove, though some custom versions of the Tilapia 6.50 seen in the European market have been outfitted with small sinks and chemical toilets for extended weekend cruising.
Known Issues & Buyer’s Checklist
Synthesizing data from owner experiences and technical reviews of Pierre Rolland’s cat-boat designs, prospective buyers should focus on the following technical areas:
- Mast Step and Partner Reinforcement: Because the rig is unstayed, the leverage forces exerted on the deck and the mast step are immense. It is critical to inspect the "partners" (the area where the mast passes through the deck) for any signs of hairline cracking or compression in the laminate.
- Keel Pivot Mechanism: The pivoting keel allows the boat to navigate in as little as 0.30m of water. However, the pivot pin and the lifting cable are high-wear items. Buyers should check for any lateral "clunking" while the keel is down, which may indicate worn bushings in the keel trunk.
- Carbon Fiber Degradation: While carbon masts are durable, early versions of the Tilapia may show UV degradation if the clear coat or paint hasn't been maintained. Any signs of splintering or "milky" resin should be professionally surveyed.
- Wishbone Boom Hardware: The wishbone boom setup uses a unique attachment system to the mast. Ensure the "snotter" (the line controlling the wishbone tension) and the blocks are in good condition, as these parts are under constant high tension.
Community & Resources
The Tilapia 6.50 enjoys a dedicated following in France and the Benelux region. Technical support and original design philosophy are often sourced through the Pierre Rolland Architecture Navale office, which remains active in the design of modern, fast cruising yachts. While no formal international class association exists, owners frequently share technical modifications via French "Voile" forums and regional cat-boat rallies.
The Verdict
The Tilapia 6.50 is a rare find on the used market, appealing to sailors who want the speed of a racing hull without the "string-pulling" complexity of a traditional sloop.
- Pros:
- Simple, intuitive "plug-and-play" sailing rig.
- Exceptional light-air performance and planing potential.
- Vast interior volume for its size due to the lack of a mast post.
- Highly versatile draft for beaching and trailering.
- Cons:
- Lack of a jib can make tacking in heavy chop challenging.
- Minimalist interior may lack the amenities required for long-term cruising.
- Niche rig components may require custom fabrication if damaged.
Similar Sailboats
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Twin
- Rudder
- 2x —
- Ballast
- -
- Displacement
- 3086 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 23.62 ft
- Waterline Length (LWL)
- -
- Beam
- 8.37 ft
- Draft
- 1.84 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Cat Rig
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 226.04 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 17.06
- Ballast / Displacement Ratio
- —
- Displacement / Length Ratio (D/L) Ratio
- —
- Comfort Ratio
- —
- Capsize Screening Formula
- 2.3
- Hull Speed
- — kn


