Abstract:
The presentation focuses mainly on work made in relation to the wave buoy analogy, where the central point is to use available wave-induced global vessel responses (motion components, accelerations, hull girder strains, etc.) to make on-site sea state estimation from an advancing ship in a seaway. Thus, within technical ship operations at sea – and more generally for all maritime operations – knowledge of the on-site sea state can be used to improve both safety and efficiency. In particular, this type of sea state estimation can provide fundamental information to control- and decision support systems (DSS), which also include the area of dynamic positioning, where the sea state estimate can be used for feed-forward control, improving both station-keeping behaviour and fuel consumption. Moreover, vessel performance systems for onboard as well onshore (‘in-house office') fleet analyses gain advantage by having available continuous estimates of the sea state at the particular position.

Short bio:
In 2005, Ulrik Dam Nielsen obtained his Ph.D. degree from the Section of Coastal, Maritime and Structural Engineering at DTU Mechanical Engineering. After four years as Post Doc. and assistant professor at DTU, Ulrik joined, in 2009, the staff of DTU Mechanical Engineering as an associate professor. He has since then been involved in research and teaching primarily about wave-ship interactions with a main focus on onboard monitoring and decision support systems for operational guidance and performance. In the research, several topics are addressed, including analysis of full-scale measurements, in-situ estimation of the sea state at the location of an advancing vessel, fatigue damage accumulation in the hull girder, numerical models for the prediction of ship responses. Ulrik has since January this year, 2014, been affiliated with AMOS as an associate professor II.