Relative navigation of an aircraft (fixed wing or helicopter) close to ships at sea is a unique navigation problem. Shipboard helicopter operations provide a difficult operational environment. Wind over deck and wake turbulence shed by ship super structure offer challenging and unpredictable conditions during takeoff and landing. This is especially true in the operational environment that inclu...

Low-frequency ocean ambient noise is dominated by noise from commercial ships, yet understanding how individual ships contribute deserves further investigation. This study develops and evaluates statistical models of container ship noise in relation to design characteristics, operational conditions, and oceanographic settings. Five-hundred ship passages and nineteen covariates were used to buil...

One of the most complicated and time-consuming process in ship production is to determine the optimum route of piping. The automatic system to generate optimum collision free routes for pipes is presented in this paper. In the past, research has been primarily focused on the use of only deterministic or only nondeterministic optimization techniques to find the optimal route. In this paper, the ...

In order to optimize the energy management strategy and solve problem of power quality degradation fuel cell hybrid electric ships, a particle swarm optimization algorithm based is proposed in this paper. Taking ship as target ship, system simulation model built Matlab/Simulink verify strategy. Through simulations comparisons, bus voltage curve optimized fluctuates more gently, sag smaller. The...

In recent years, the shipping industry has faced an increasing number of challenges in terms of fluctuating fuel prices, stricter environmental regulations, and concerns about global warming. In this situation, passenger volumes on cruise ships have increased from around 4 million to 13 million from 1990 to 2008 and keep growing today. A small cruise ship can emit about 85 tons of CO2 per day, ...

− The paper is to present the new DSP-based device shown in the wake of hitherto development of power quality instrumentation for power quality assessment in ship systems. The basic features of the new power quality estimator-analyser are described. Further, the design of its new commercial version is shown and discussed.

Permanent growth of the container shipbuilding has led to the need of research – developing activities with references to design and ship building process. The requirements for the container vessels have been modified and changed compared with the ships built in the eighties of the past century. The ships capacity have been increased up to and even above 10 000 twenty feet containers (TEU) with...

Initial dissertation research in the area of real-time system identification of ship hydrodynamic coefficients is presented. In accordance with the naval initiative of Seabasing requiring automation of small vessels, a real-time coefficient system identification method is being researched. Ship coefficient system identification has been relatively neglected with efforts limited only to Kalman f...

The debate over the best electric grid topology for an all electric ship has provoked discussion on a wide range of topics, spanning interconnection issues, transmission losses, and power preferences of electronic components, radar ranges, and propulsion motors. Surprisingly, these issues are peripheral to the real issue. The primary driver in this debate is the power source, presently the gas ...

Modern management of sea transportation which are integrated is needed, the system consist of system improvements based on shipping traffic demand, policy and safety cruise, cruise business management modernization and development of related industries. In the last 5 years, the marine accidents are clusterred into ship collision, fire, engine problems, and leakage of the ship. This paper propos...