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A 2007 powerboat fitted with the Lift Ocean hydrofoil retrofit system lifts clear of the water at 15–16 knots and cruises at up to 30 knots on half throttle, cutting fuel consumption by roughly half.0:36 The system uses three hydrofoils — one at the bow, two at the stern — that deploy with a single button press and self-adjust for height, pitch, and roll.0:23 Without foils, the same boat with a 115-horsepower outboard struggled to reach 11.5 knots at full throttle; with foils deployed at half throttle, it hit 21–22 knots and topped 25 knots with minimal throttle input.10:28 The test takes place on the water outside Bærums Seilforening at Sarbyvålen, with Thomas Nilsson at the helm for a first foiling run.2:43 Jørgen, representing Lift Ocean, explains the core concept: rather than building a new carbon foiling boat costing millions, the system retrofits existing hulls up to about 30 feet.0:55 The foils bank in turns like a bicycle, eliminate bow rise, and reduce wake and noise significantly.5:45 The practical takeaway is that a retrofit hydrofoil system can transform an aging displacement powerboat into a foiling cruiser at a fraction of the cost of a purpose-built foiler.

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