OpenNAOE Seakeeping

Linear motions of displacement monohulls in regular and irregular waves in deep water, by the strip theory of Salvesen, Tuck and Faltinsen as presented in Principles of Naval Architecture, Vol. III, without the original end corrections, with sectional coefficients from a two-dimensional panel solver. Forward speed is limited to Froude numbers up to 0.35 and to hulls whose ends are confirmed as pointed. Supplementary roll damping is an assumed ratio, entered coefficients, or Ikeda's component method for even-keel hulls without bilge keels. It reads a closed STL or OBJ hull mesh or a table of offsets and runs in the browser, online or offline, as one HTML file. This tool supports learning, teaching and early design exploration with documented numerical benchmarks and measured comparisons. The evidence defines its current scope and next validation steps; qualification for real-world engineering use remains to be completed. This version holds the HTML file and its SHA-256 checksum.