Standards for environmental impact, safety and operational performance of ships are becoming increasingly strict. In order to meet these standards, the new ship designs must be predicted with an increasing level detail confidence. As present prediction methods lack realistic, dynamic behaviour ship's propulsion plant, there is a need more advanced methods. this paper, open water test Hardware i...

An experimental study has been made to compare the frictional resistance of several ship hull coatings in the unfouled, fouled, and cleaned conditions. Hydrodynamic tests were completed in a towing tank using a flat plate test fixture towed at a Reynolds number ~ReL! range of 2.8310 6 – 5.5310 based on the plate length and towing velocity. The results indicate little difference in frictional re...

Abstract A new concept design Catamaran Decommissioning Unit has been developed by Research Center for Hydrodynamics Technology Indonesia. The catamaran a unique shape, however in order to achieve resilient and sustainable the decommissioning unit as it resistance analysis both model testing numerical calculation must be conducted. value from needs validated with results towing tank. of scaling...

Due to their good mechanical properties composite materials are increasingly applied for the construction of lifting surfaces in maritime industry. However, besides improving strength weight ratio a structure, anisotropic material can also exhibit bend-twist coupling, when exposed higher loads. In order experimentally measure fluid structure interaction, object investigation needs same loadings...

This paper introduces an autonomous towed vehicle which has various navigation modes; towed mode, autonomous mode and kite mode, to stand against fast and changeable sea currents. The property assures safe and reliable observation works irrespective of a current speed. Such vehicle must be useful for port area application since in a port area sea currents are so fast and complex. The different ...

Flows around a wedge-shaped bow are simulated with the aim of investigating the wave breaking mechanism and small scale features of ship bow waves. The wedge geometry used in the experimental study of Waniewski et al. (2002) is chosen with the flow conditions at Re = 1.64×10 5 and Fr = 2.93. The bow wave structure, wave breaking process and air entrainment are studied. The predicted overall bow...