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The Jpk 1050 is a 12.2-meter sailboat designed by Jacques Valer and built by JPK Composites from 2025, intended for IRC racing with a fin keel, bulb, and dual rudders. Jean-Pierre Kelbert, the designer whose initials name the boat, won the Rolex Fastnet Race overall with co-skipper Alexis Lianchon aboard a Jpk 1050, attributing success to the boat's upwind performance and downwind planing ability. The Jpk 1050 carries more hull volume than earlier JPK models and achieves a high IRC rating of 1.065 due to its short waterline length, equivalent to a fast 40-footer. It begins planing at 14 knots, or 10–12 knots at a favorable angle, with sustained planing from 17–18 knots. During a test, the boat hit 20.5 knots on the log and peaked at 30.8 knots surfing down a wave face. The 3500 kg hull is designed to plane before competitors, featuring a wide-forward, flat-bottomed hull form inspired by TP52s, which requires heeling to move cleanly through chop to avoid slamming. The optional 20 hp Lombardini shaft drive engine is loud and vibrates without sound insulation, but can exceed hull speed with minimal power. The interior is spartan, with pipe berths, a minimal chart table with foot braces, a deck-stepped mast, and a head without a holding tank.
