Wind Modelling Sensitivity on Free-fall Lifeboat Simulations

This paper presents an overview of the sensitivity of free-fall lifeboat simulations during free-fall conditions. Using MARIN's time domain XMF framework, simulations are conducted for the VIKING NORSAFE GES50MK3 free-fall lifeboat, which is released from a stationary host. Results are presented for free-fall lifeboat drops in calm water, which are compared to basin test experiments. A good agreement is achieved, indicating that the proposed simulation method is robust. Varying the skid pitch angle shows that pitch angles at water entry exceeding 70° results in lifeboat motions with a negative forward velocity. Lastly, simulations are conducted including wind shielding from a generic FPSO. These results indicate that the wind shielding has a pronounced influence on lifeboat trajectory.

This paper is copyrighted material and cannot be shared. Due to copyright policy MARIN is not allowed to reproduce and distribute papers written for and presented at the OTC (Offshore Technology Conference), ISOPE (International Ocean and Polar Engineering Conference) and SPE (Society of Petroleum Engineers). You can order these papers through www.OnePetro.org.

For this specific paper follow this link.