Design Brief & Intent
The core mission of the Agrion 6.5 was to serve as a fast, transportable coastal cruiser capable of high-speed "raids"—rapid multi-day passages along shallow coastlines and archipelagos. Auzépy-Brenneur sought to capture the exciting sailing characteristics of the emerging Mini Transat 6.50 class but adapt them for short-handed cruising. To achieve this, the hull features a maximum beam of 8.2 feet, which was intentionally matched to European trailering limits, allowing owners to bypass the need for wide-load road permits.
By carrying this beam far aft to a wide, open transom, the hull gains substantial form stability. Below deck, the interior layout maximizes every available inch of the compact cabin. While there is no standing headroom—a common trade-off in high-performance pocket cruisers—the accommodation is surprisingly functional. The boat is rated to sleep up to five people using a double V-berth forward, twin settees, and a small quarter berth (though veteran owners often eliminate the quarter berth in favor of dedicated storage space). The joinery and interior fit-out are sparse and lightweight, utilizing fiberglass liners and basic marine plywood to keep weight at an absolute minimum. It is a cabin designed for shelter at anchor rather than luxurious lounging, prioritizing dry storage and sleeping comfort after an active day on the water.
Variations & Configurations
While a rare fixed-keel version was produced for specific localized markets, the definitive and most highly regarded configuration of the Agrion 6.5 is the lifting-keel (dériveur lesté) version. This variant utilizes an elegant dual-ballast strategy to balance trailerability with stability.
The mechanical ballast consists of a retractable vertical daggerboard (dérive sabre) fitted with a 220-pound (100 kg) lead bulb. When fully lowered, the foil extends the draft to nearly 5 feet (1.45 meters), giving the boat exceptional lift and pointing ability upwind. When retracted into its trunk, the draft is reduced to just under 12 inches (0.30 meters), allowing the boat to slide onto a custom trailer, navigate shallow canals, or safely beach on sandy shores.
Crucially, this lifting foil is supplemented by a 400-liter (1,058 lbs) liquid ballast system. By incorporating water ballast tanks built low into the hull sides, Auzépy-Brenneur allowed the boat to carry a ballast-to-displacement ratio of 53.33 percent when sailing. When it is time to haul the boat out, the water is gravity-drained, dropping the towing weight back down to its base displacement of 1,984 pounds. This allows the Agrion 6.5 to be easily towed behind a standard mid-sized family vehicle.
Sailing Performance & Handling
The sailing performance of the Agrion 6.5 is nothing short of explosive for a pocket cruiser of its era. This athleticism is driven by an extraordinarily high sail area-to-displacement ratio of 32.63. Paired with a fractional sloop rig, the boat carries 322 square feet of upwind sail area on a highly efficient mast. Many hulls were delivered with a Bergström-style rig, which utilizes highly swept spreaders and deletes the backstay to accommodate a powerful, fat-head mainsail with a large roach.
With a displacement-to-length ratio of 91.27, the hull is firmly in the ultra-light, planing category. On a reach or downwind run, the flat aft sections allow the hull to break free of its bow wave and plane easily in moderate breeze, regularly maintaining speeds well above its theoretical hull speed. Helming the Agrion 6.5 is a highly active, responsive experience. A comfort ratio of 8.71 indicates that the motion in a seaway is quick and lively, demanding attentiveness from the crew rather than the passive, self-correcting behavior of a heavy-keel boat.
Similarly, the capsize screening ratio of 2.61 highlights the boat's reliance on its wide beam and active water ballast for stability. While the form stability is immense when the water ballast tanks are full, the boat is designed for active, coastal sailing rather than blue-water voyaging. In light air, the boat excels, accelerating in minor puffs where traditional pocket cruisers would sit becalmed.
Market Snapshot & Maintenance Triage
With production estimated between 17 and 60 hulls over its 14-year run, the Agrion 6.5 is an incredibly rare find on the brokerage market, primarily trading hands privately in France, Belgium, and the Netherlands. Because of its unique combination of planing performance and genuine trailerability, clean examples command a solid premium among knowledgeable buyers, retaining their value remarkably well.
For prospective buyers, long-term maintenance focuses on the systems that make the boat unique. The water ballast system requires close inspection: the gate valves, intake manifolds, and internal tank baffles must be checked for gelcoat cracking or plumbing leaks that could weep water into the dry bilge areas.
The lifting daggerboard trunk is another critical structural area. The cable winch, hoisting block, and lead-bulb attachment points must be checked for corrosion or play. Because the daggerboard trunk is subjected to high lateral forces when sailing hard upwind, any weeping or stress-cracking around the trunk-to-hull joint requires immediate professional fiberglass reinforcement. Finally, due to the complexity of the swept-spreader, backstayless rig configurations, owners must be comfortable with precise rig-tuning to prevent mast pumping in choppy seas. Many veteran owners have engineered custom A-frame gin poles to make solo mast-stepping straightforward when launching from a trailer.
The Verdict
The Agrion 6.5 is an avant-garde pocket cruiser that successfully packages the adrenaline of a modern sportboat into a highly practical, trailer-ready platform. It is not a boat for those seeking a slow, heavy-displacement platform to cushion them from the elements; rather, it is a highly responsive coastal raider designed for sailors who want to cover long distances quickly, explore shallow estuaries, and sleep comfortably under a simple cabin roof.
Pros
- Incredible power-to-weight ratio yields exceptional light-air performance and easy downwind planing.
- Dual ballast system (lifting bulb keel plus water ballast) provides excellent stability on the water and a light towing weight on the road.
- Draft of under 12 inches with the keel retracted allows for effortless beaching, creek-crawling, and simple ramp launching.
- High build quality from recognized builders ensures lasting structural integrity.
Cons 2
- Extreme rarity makes sourcing a well-maintained hull on the brokerage market highly difficult.
- Comfort ratio of 8.71 translates to a highly active, motion-rich ride in a seaway that can be fatiguing on long passages.
- Minimal cabin headroom and basic interior amenities limit comfortable cruising to short-term coastal raids.
- Retractable daggerboard trunk and water ballast plumbing introduce complex maintenance points that require regular inspection.
