Ship motion prediction fs an important practical problem in design of many Ocean systems i.e. fire controls, air craft landing and take off. As such the problem has received considerable attention In the past and various attempts for designing estimators via the statistical methodology were made in the past. In this paper the design of the ship position estimator via neural networks is consider...

In naval engineering and related disciplines, it is common for dynamic models of the human body to be used in conjunction with quantitative records of body and ship motions, in order to study human balance behaviour while performing various shipboard activities. Research in this area can lead to improvements in ship operations and designs that improve crew safety and efficiency. This paper pres...

Temporal changes in the water mass distribution and biogeochemical signals in the tropical eastern South Pacific are investigated with the help of an extended optimum multi-parameter (OMP) analysis, a technique for inverse modeling of mixing and biogeochemical processes through a multidimensional least-square fit. Two ship occupations of a meridional section along 8550 W from 14 S to 1 N are an...

The deformation of the ground surface that is produced by frost heave has motivated almost a century of concerted laboratory, field and theoretical studies. Well before the development of equipment capable of resolving the microscopic films that support liquid transport towards growing ice lenses, early investigators predicted their occurrence and noted their importance. Idealized experiments c...

For a recent project on the influence of motion system characteristic on human perception and control behaviour, a dynamic model of the MPI Stewart platform was developed. The model parameters were estimated from measurements involving motion along a circular trajectory and frequency sweeps. Simulation results showed that the model response with optimised parameters was very close to the measur...

A brief review of recent literature on riser design is presented and a concise description of the design process is given. Effects of hydrodynamical design parameters on marine flexible riser design are then reviewed. Riser dynamic analyses are described which substantiate design criteria for the selection of riser configuration in deep and shallow water. The results of dynamic analyses using c...

Hydrodynamics of porpoising instability in vertical-plane motions of high-speed planing vessels have been investigated for years. However, not much work has been published on dynamic control of vertical-plane motions of planing boats by controllable appendages. In this paper, effects of controllable transom flaps on heave/pitch motion characteristics of high-speed planing vessels are investigat...

In-situ instruments were installed on 12 m high masts at the bow (bow mast) and the crow nest (middle of the ship, ship mast). The principal sensors installed on each mast were: CSAT-3 sonic anemometer and a CS7500 LiCor LI7500 open path H20/CO2 analyzer/hygrometer. The bulk meteorology sensors were mean temperature and humidity sensors in aspirator and 2-D sonic anemometers for mean wind. Data...