High Speed

High speed in maritime use describes a vessel operating at the upper end of its designed speed range, where handling, stopping distance, fuel burn and impact loads change significantly. It is usually measured in knots and may include planing powerboats, fast ferries, RIBs, racing yachts or foiling craft, depending on vessel type and conditions.

For boaters, high speed shortens passages but reduces reaction time and increases the consequences of navigation errors, traffic encounters and floating debris. Safe operation depends on monitoring Sea State, Wind Speed and Fuel Consumption, plus allowing for greater turn radius, wake effects and crew comfort.

PredictWind forecasts, wave maps and routing tools help assess whether fast running is practical for a route and time window. Power vessels can compare speed and economy with Power Routing, while sailing crews can judge when performance targets are realistic rather than hard on gear.