Abstract: Various important types of offshore structure contain significant nonlinearities or time-varying coefficients in their equations of motion. Well-known examples include tension leg platforms, free-hanging ...

Abstract: Random signals with some desired power spectrum may be generated by a variety of methods, including summation of sinusoids, convolution of white noise with a kernel function or integration of ...

Abstract: Active control of the motion of marine structures may produce structural and operational savings over conventional passive designs. It is shown how equations of motion of typical marine structures, ...

Abstract: Conventional analysis of tension leg platform structures yields natural frequencies which are well separated from wave excitation frequencies. However, the results presented here show that the ...

Abstract: Models for Remotely Operated Underwater Vehicles (ROVs) are difficult to derive because their dynamics are strongly coupled, highly nonlinear and vary according to the vehicle’s operating ...

Abstract: A predictor of the future motion of a vessel subject to random wave and wind forces, would have a variety of applications in ocean engineering. Most previous work has assumed that the wave ...

Abstract: Conventional multivariable and adaptive controllers are hard to design for Remotely Operated Underwater Vehicles (ROVs) because their dynamics are strongly coupled, highly nonlinear and vary according ...