The requirement for ‘good prospect’ originates from the approved code of practice in relation to the 1995 Prevention of Fire, Explosion and Emergency Response (PFEER) regulations issued by the UK Government. These regulations in conjunction with the Manning and Administration Regulations (MAR) and Design and Construction Regulations (DCR) are the key pieces of legislation that implement the findings and recommendations of Lord Cullen, who presided over the Piper Alpha Disaster inquiry. ‘Good prospect’ equates to the ability to rescue personnel from the sea and recover them to a place of safety, in all but the most severe of weather conditions, within prescribed survival time limits. Traditionally, this work has been undertaken by SSVs (standby safety vessels) or a mixture of SSVs and helicopters. The critical issue is how long a person can survive at sea (e.g. the north sea) after escaping from a rig >