We present a design optimization method for reducing the wave resistance (drag) of surface piercing hulls. Since this component of the drag is directly related to the energy contained in the wave structure that extends behind the ship, a fully coupled calculation of the flow field and wave evolution equation is required. The method combines the authors’ efficient automatic shape optimization te...

This paper describes the design and the control architecture of an unsupervised robot developed for grit blasting ship hulls in shipyards. Grit blasting is a very common and environmentally unfriendly operation, required for preparing metallic surfaces for painting operations. It also implies very unhealthy and hazardous working conditions for the operators that must ca...

BACKGROUND Ascidians play a key role in the ecology and biodiversity of marine ecosystem. Ascidians can be transported in ship ballast water and while attached to ship and boat hulls. Heavy traffic by domestic and international ships as well as cargo vessels between the major and minor ports warrants continuous monitoring for new introductions of ascidians. The Mandapam coast is situated in the...

Choosing the right hull shape is important in designing a ship, for example, U-section or V-section of hull. The will affect various aspects, such as design, resistance, seakeeping, structure and production. ship must be properly designed so that it can operate according to ship’s mission. From seakeeping aspect ship's motion at sea, difference result different motions dynamic effects slamming ...

Robotics can play a key role when dealing with environments that are inaccessible or hazardous for humans including ship hulls, bridge installations, oil rigs, and first reponse scenarios. Due to irregular terrain, wheeled vehicles are ineffective at traversing the necessary terrain. Legged systems are a salient solution. However, legged systems require special considerations regarding workspac...