Evacuation Performance of Davit Launched Lifeboats

The capabilities of two marine evacuation systems have been investigated using model experiments in a large test facility at the Institute for Ocean Technology. Tests were done with the widely used conventional davit launched twin-falls lifeboat and a similar system with the addition of a flexible boom. The performance of both systems was evaluated as a function of weather conditions, ranging from calm conditions to storms. In addition, the effects of the configuration of the evacuation station were examined. This included the orientation of the boat at launch and its clearance from the vessel. Evacuation tests were done in intact and damaged conditions. Results of this large experimental campaign are presented and practical applications to emergency preparedness planning and evacuation system design are discussed. This work aims to address a knowledge gap by providing objective, empirical data that can be used by designers, regulators and others in their decisions concerning safety.