Mathematical Model for Efficient Prediction of Lifeboat Sailaway Performance in Calm Water and Waves

AuthorsF. Quadvlieg, R. Tonelli, E. Palermo, P. Teigen
Conference/JournalOMAE ASME 34th International Conference on Ocean, Offshore and Arctic Engineering, St. John�s, Newfoundland, Canada
DateJun 1, 2015

Free fall lifeboats have been developed for emergency evacuation from offshore installations, when conventional means of transportation cannot be applied. As a consequence, the ability of the lifeboats to perform safe drop- and sail away under all circumstances has to be demonstrated. This paper focuses on efficient and robust numerical simulation of these operations.To predict the lifeboat behavior under a large variety of stochastic conditions, such as irregular waves, in combination with wind and current, calls for many individual simulations of the sailaway performance. The present paper presents a brand new mathematical model that is able to predict the behavior of a free fall lifeboat during drop-phase, the submerged phase, the surfacing phase and the 'sailing in waves' phase (combined, not gluing time traces from different predictions together).

manoeuvring and nautical studieswaves, impacts and hydrostructuralcfd/simulation/desk studiestime-domain simulationsmanoeuvringoil and gasinfrastructuredefencepassengers and yachtingtransport and shippingwaves