Ultra-compact, fully-automatic inflatable horseshoe buoy designed to replace the traditional horseshoe buoy and reversing light, fixed by double Velcro tabs to tubes 20 to 40 mm in diameter. 150N buoyancy (complies with French regulation 240). It is fitted with a perimeter strap and two extremely strong handles (300 kg resistance), making it possible to rescue and re-board a person who has fallen into the water. The built-in automatic light is activated at the same time as the buoy, is valid for 5 years and replaces the roll-over light.