2023 F-One (T1) Seven Seas Carbon Foil Plane

The 2023 F-One Seven Seas Carbon Foil Plane is a high-aspect-ratio hydrofoil package from French brand F-One, bundling a carbon front wing, split carbon fuselage, and the C250 Fence stabilizer into a single ready-to-ride assembly. Available with 1000, 1200, or 1400 cm² front wings, the Seven Seas Carbon targets wing foiling and downwind riding with a focus on glide efficiency and a broad usable speed range. Each plane in this lineup pairs with one of three carbon fuselage lengths — XXX-Short (27.5 cm), XX-Short (30 cm), or X-Short (33 cm) — letting riders tune the balance between tight maneuverability and directional stability.

F-One builds the Seven Seas Carbon using a Monobloc front-wing structure in pre-preg carbon fiber, a process that molds the wing as a single piece for improved load transmission and torsional stiffness at low weight. Wingtip fences on the front wing reduce induced drag at the tips, contributing to a cleaner, more efficient glide. The TITAN connection system at the mast junction accepts both F-One aluminum and carbon masts, and the two-piece fuselage design simplifies packing for travel.

• Front wing sizes: 1000 cm², 1200 cm², 1400 cm²
• Aspect ratio: 7.5 (1000 and 1400), 7.6 (1200)
• Front wing span: 86.5 cm (1000), 95 cm (1200), 103.5 cm (1400)
• Front wing weight: 1.35 kg (1000), 1.44 kg (1200), 1.61 kg (1400)
• Stabilizer: C250 Fence — 200 cm² area, 37 cm span, AR 6.8, 115 g
• Fuselage lengths: XXX-Short 27.5 cm, XX-Short 30 cm, X-Short 33 cm
• Construction: Pre-preg carbon, Monobloc front wing
• Mast connection: TITAN system (aluminum or carbon mast compatible)

The Seven Seas Carbon suits intermediate to advanced foilers who want efficient glide without stepping up to the demands of a true ultra-high-aspect platform. Its 7.5 aspect ratio delivers strong upwind and downwind performance while remaining more forgiving in roll and yaw than F-One's higher-AR Eagle series. Riders progressing from mid-aspect foils into longer-glide territory will find it a practical step up, and experienced wing foilers can use the shorter fuselage options to tighten carving arcs on waves or in swell.

The 1400 cm² wing extends the low-end lift for lighter winds or heavier riders, while the 1000 cm² version favors higher wind speeds and riders who prioritize top-end pace over early lift. All three sizes pair well with prone surf foiling and SUP foiling in addition to wing use, though F-One positions the line primarily around wing foiling and downwind runs.

Within F-One's carbon foil range, the Seven Seas Carbon sits between the Phantom Carbon (aspect ratio around 6.0, oriented toward accessible carving and surf-style riding) and the Eagle HM Carbon (aspect ratio 9.5, built for maximum glide and open-ocean downwind speed). That middle positioning gives it a versatile character — more glide than the Phantom, more forgiveness than the Eagle. For the 2024 model year F-One updated the line to the Seven Seas V2, raising the aspect ratio to 8.0 and expanding the size range to 1100–1600 cm², so the 2023 version reviewed here represents the first generation of the design.

Buyers cross-shopping other brands may compare the Seven Seas 1200 to foils like the Armstrong HA 1125 or the Axis HPS, which occupy a similar high-aspect freeride niche. The bundle format — front wing, fuselage, and stabilizer sold together — simplifies purchasing compared to buying each component separately.