Added resistance using Salvesen–Tuck–Faltinsen strip theory and the Kochin function

It is now more than half a century since the development of renowned and well-established strip theory Salvesen–Tuck–Faltinsen (STF), Salvesen et al. (1970). One existing, widely used, methods for calculating wave drift force (zero-speed case), or added resistance (forward-speed within this theory, near-field formulation which was developed by himself in (1974), (1978). This method invokes weak-scatterer assumption to drop one term, also approximates exponential terms as constant integrals over each two-dimensional ship section. These approximations are essentially long-wave (1974). The main objective paper, has been entirely inspired Kashiwagi (2010), apply far-field formulation, context STF without above-mentioned assumptions. implemented following Maruo (1960b), (1963) employs Kochin function (1936) express kinematics far field. necessary ingredients obtained an implementation using low-order Boundary Element Method (BEM) free-surface Green function. No required explicitly includes interaction disturbance potentials. Sectional calculated analytically, assuming piecewise-constant variation Within framework all three from Maruo’s relation treated, line integral along vessel’s length exactly either linear Fourier-mode decomposition non-exponential terms. outcome calculation procedure inside compares very well with experimental measurements relevant reference solutions. verified six different hulls. notable advantage presented framework, comparison Salvesen’s (and that Gerritsma Beukelman (1972)), its ability accurately predict zero-speed force. In addition, approximate form discussed. Similar method, approximation, expressed body motion, hydrodynamic coefficients sectional geometric constants. performs at zero-speed, but deteriorates quickly speed increases.