Semi-Submerged Ship Form with Minimum Wave Making Resistance

Tools for Semi-planing / Semi-displacement Ship Design with Applications

A numerical re-formulation of Marou’s integral for slender body analysis of calm-water planing hydrodynamics with gravity wave-making is developed. Numerical computations are performed first for a flat triangular planing plate. The triangular planing plate has been the subject of previous work with the base Maruo theory. The comparisons are supportive of the formulation for performing wave lift...

High Performance Ship Autopilot With Wave FilterThor

This paper describes the application of Lyapunov stability theory to automatic steering of ships. The motivation for using nonlinear control theory is that nonlinearities can be compensated for in a systematic manner. For instance, this allows the designer to design the autopilot system for a ship described by the nonlinear models of Norrbin (1963) and Bech and Wagner Smith (1969) both utilizin...

Globally singularity free semi - classical wave functions in closed form

We use a factorisation technique and representations of canonical transformations to construct globally valid closed form expressions without singularities of semi-classical wave functions for arbitrary smooth local potentials over a one-dimensional position space.

Wave Reflection at Submerged Breakwaters

Several types of structures are used in Coastal Engineering with the aim of preventing shoreline erosion, such as groynes, detached breakwaters, submerged breakwaters, etc. Submerged breakwaters have the advantage of their minimal visual impact, which has made them ever more popular (Chang & Liou, 2007). When the incoming waves impinge on a submerged breakwater, a process of energy transformati...

A Ship-borne Wave Recorder