Superyacht Design / Naval Architecture
Naval Architecture
The yacht's turning, directional stability and low- and high-speed handling characteristics, including the effects of hull form, appendages, propulsion and steering arrangements.
The yacht's turning, directional stability and low- and high-speed handling characteristics, including the effects of hull form, appendages, propulsion and steering arrangements.
Guide
Manoeuvring trials measure how the completed yacht turns, responds to helm and changes motion under controlled conditions. Turning circles, zig-zag tests and other manoeuvres provide evidence against predicted and required handling performance.
Aug. 10, 2026
Guide
At low speed, conventional hull and rudder forces weaken while wind, current, propeller wash, thrusters and vectored thrust become increasingly important. Close-quarters control is therefore a different hydrodynamic problem from open-water steering.
Aug. 10, 2026
Guide
A rudder produces steering force by operating as a lifting surface in the flow behind the yacht. Area, span, chord, aspect ratio, balance, section shape, inflow and rudder angle determine how effectively that force becomes a yawing moment.
Aug. 10, 2026
Guide
Directional stability describes whether a disturbed yacht tends to return toward straight motion or diverge from it. Course-keeping adds steering and control, creating a balance between natural hull stability, responsiveness and helm demand.
Aug. 10, 2026
Guide
Turning ability describes how rapidly and within what space a yacht can change heading after steering input. Advance, transfer, tactical diameter and steady turning radius provide different measures of that manoeuvring response.
Aug. 10, 2026