Training on Pelorus included Local familiarisation & transit points. Christopher Pye also present today. Overheard on Channel 16 local launch reporting battery problems. Located launch quickly and then returned to base to collect battery charger. Launch still wouldn't start so Trevor arranged for TPR to be manned. Pelorus transported 3 children and one adult from launch and returned them to base.Pelorus then followed TPR out to launch and acted as break.