Against the background of a drastically increased demand marine proteins, off-bottom, bivalve aquaculture, provides significant potential for production growth when moved into more energetic waters. Hence, research, industry and politics are currently proposing development new offshore sites. The highly conditions at these sites present challenging environment aquaculture. In this work, physica...

The Gate Rudder is a recently introduced twin rudder system whose major advantages stem from its energy-saving properties. two foil-shaped blades of the rudder, placed aside propeller, act as partial duct in wake hull producing additional thrust. However, since primary safety device on any vessel, investigating manoeuvrability performance critical aspect that needs careful and detailed consider...

The paper describes the method of determination exhaust emission characteristics from a vehicle engine based on results obtained in driving test simulated an dynamometer. These are relations between specific distance emissions and zero-dimensional process velocity: average velocity value absolute product acceleration. used to simulate vehicles operating different types traffic conditions. state...

Abstract One of the most crucial tasks for naval architects is computing energy required to meet ship’s operational needs. When predicting a requirements, series hull resistance tests on scale model vessel carried out in constant speed stages, while acceleration stage measurements are ignored. Another important factor seakeeping analysis hydrodynamic added mass. The second law dynamics states t...

Automotive engine power and torque are significantly affected with effective tune-up. Current practice of engine tune-up relies on the experience of the automotive engineer. The engine tune-up is usually done by trial-and-error method, and then the vehicle engine is run on the dynamometer to show the actual engine output power and torque. Obviously the current practice costs a large amount of t...

Abstract The aim of this work is to study the influence chamfered perforation and chamfering on heave pitch motion a single floating wind power platform with an anti-heave device. Firstly, hydrodynamic performance body different chamfers, or without perforation, calculated analysed. Secondly, model 35° captured studied in towing tank. results show that when wave height large period small, perfo...

The experimental studies in the ice model tank of Krylov State Research Centre are described paper. This study aimed at researching a possibility close-coupled towing large-sized vessels by icebreaker. displacement considered commercial is several times greater than icebreaker displacement. Due to fact that an amount cargo transported along Northern Sea Route growing every year and new terminal...

Abstract Challenges for steady and unsteady model motion in a large water towing tank procedures to overcome them are the focus of presented work. Some challenges attributed experiments conducted water, whereas others uniquely ascribed facility. Data convergence outlier detection studied based on phase averaged pressure order ensure proper data quality. Pressure measurements performed with non-...

Abstract The navigation performance of the ship model is generally studied by hydrodynamic parameters models with help test chamber towing tanks or external waters. Considering difference among conditions indoor field tank outer water area and actual sea state, to solve problem large-scale series under state in this article, a measurement control system was designed, including heading system, c...