Pressure reconstruction from PIV measurements in the bow region of a fast ship

The paper presents velocity measurements, using particle image velocimetry, as well as a reconstruction of hydrodynamic pressures for the analysis of fast ships. Stereoscopic PIV measurements with a towed underwater PIV system are conducted during towing tank tests to obtain the velocity field in the bow region of a fast ship at speeds up to...

Hydrogen Powered Ship Propulsion for High-Speed Craft: The implementation of Fuel Cell Battery Propulsion Systems

The shipping industry has a notable share in global greenhouse gas emissions and other pollutants such as sulphur and nitrogen oxides. Fuel cells and batteries are identified as relatively new technologies for shipping with high potential and hydrogen is also considered as one of the most promising sustainable fuels, especially for smaller...

The heel-induced sway force and yaw moment of a high-speed craft in following regular waves

The coupling between heel and the loads in the horizontal plane is usually neglected in manoeuvrability studies. However, the heel–sway and heel–yaw coupling can play an important role in potentially unsafe conditions, such as in a following sea. In these conditions, small fast vessels experience dynamic instabilities which threaten their...

The manoeuvrability of high-speed craft in the following sea

Broaching-to is a highly complex, non-linear dynamic instability event that several vessels might face when sailing in the same direction of the waves, for example when returning to port during a storm. This condition is referred to as following sea. Vessels such high-speed craft but also patrol and rescue boats, fishing trawlers or small...

Fatigue Damage Sensor: Improving fatigue lifetime predictions of aluminium high speed craft

Monitoring fatigue damage is complex because ships are designed to crack after 20 years, and typically cracks will only occur after a long time. A novel fatigue damage sensor has been invented to indicate damage in corresponding aluminium welded joints. Fatigue damage is accelerated by introducing a stress concentration in the sensor w.r.t. the...

Experimental and numerical investigation on the heel and drift induced hydrodynamical loads of a high speed craft

In order to provide an insight into the manoeuvring of high speed crafts, an experimental study was undertaken at the towing tank of Delft University of Technology, using a rescue vessel of the Royal Netherlands Sea Rescue Institution (KNRM).<br/>

Fatigue resistance of welded joints in aluminium high-speed craft: A total stress concept

Crew transfers, surveillance duties and {security, rescue, interception} operations at sea typically require high-speed craft. Aluminium is quite often selected as hull structure material because of its weight save potential in comparison to steel. The fatigue strength, however, may become a point of concern because of the decreased Young’s...

Experimental evaluation of slamming pressure models used in structural design of high-speed craft

The high speed craft steering at off design motion regime

Sea trials of high speed crafts data processing and model identification

Experimental pressure investigation on a high speed craft in waves

Sail optimisation for high speed craft