Ferry accidents often occur the result of ship handling difficulty which interfacing human, machine and environment. Therefore, a decision tool model as a comprehensive information system, based on the ship handling difficulty, needs to be developed through the combination of Analytic Hierarchy Process (AHP) and Fuzzy Logic System. The Fuzzy Logic System part consists of ship condition, ship ha...

We present a detailed model of the integrated power system coupled to hydrodynamics that allows us to study global sensitivities in the All-Electric Ship. A novel element of our formulation is the stochastic modeling of the coupled system to account for uncertainty in the parameters or operating conditions. This new computational framework is applied to a model of the DDG51 destroyer that invol...

Numerous investigations have been carried out in recent years to determine the thermal environment in warships at sea in the tropics. As far as is known there has been no previous study of the thermal environment in which men work when a ship is refitting in a dockyard in the tropics. The aim of this investigation was to assess these conditions by measuring air temperatures in a wide variety of...

Simulation research on the launch process of a ship-borne multiple launch rocket system is studied in this paper. First, the power spectrum density of the ship’s motion is calculated based on ocean wave energy spectrum, and the movement spectrums of the ship’s random motion are calculated. Then, the model of shipborne rocket launcher system is built by virtual prototype technology. The launch p...

An environmentally sustainable fast sail assisted feeder (FSAF) container ship concept with a maximum operational speed of 25 knots has been developed for the 2020 South East (S.E.) Asian and Caribbean feeder container markets. The use of low-carbon and zero-sulphur fuel (liquefied natural gas) and improvements in operational efficiency (cargo handling and scheduling) mean predicted green house...

In this paper, various power distribution architectures that can be implemented on a shipboard power system are investigated. The paper implements various distribution system architectures including; Radial AC, Medium Voltage DC and Zonal DC distribution systems on a reduced scale laboratory testbed. A detailed comparison among these architectures was conducted during simulated ship sailing and...

Full scale measurements of the propulsion power, ship speed, wind speed and direction, sea and air temperature from four different loading conditions, together with hind cast data of wind and sea properties; and noon report data has been used to train an Artificial Neural Network for prediction of propulsion power. The model was optimized using a double cross validation procedure. The network w...

Medium voltage direct-current based integrated power system is projected as one of the solutions for powering the all-electric ship. It faces significant challenges for accurately energizing advanced loads, especially the pulsed power load, which can be rail gun, high power radar, and other state of art equipment. Energy storage based on supercapacitors is proposed as a technique for buffering ...

To reduce water traffic accident, identification of overloaded ships has been of major importance for enforcing inland river management, especially in some developing countries. Driven by rising oil prices or other economic benefits, the ship overload phenomenon continued to occur in China. Therefore, overloaded ship detection has been of a key factor of shipping safety. This paper presented a ...