I was recently gifted by the family of an older member of our sailing group a model of the Adelaide which he had built. The hull is 32" long with the rudder hanging another 4"out the back. It looks by the location of various holes that he may have intended to power it with a small steam plant but I happened to have a motor and gearbox out of another paddler which fitted in quite well. I have tried it in the water and it seems to drive quite well but without having radio gear fitted I was hanging on to a piece of string so it did not go far. Now the radio gear is in place so we will see how it performs on Sunday, weather permitting. The 12v 7ah SLA battery is just the right amount of ballast and should give a run time of about 4 hours. Cheers, Ian.