This was an amphibious landrover that was taking some sort of geophysical survey of the marina at Neiuwpoort in Belgium, at the end of the survey they just drove up to the launching ramp and drove away in a cloud of steam with seawater gushing from everywhere – I think they must have had some sort of propeller and shaft arrangement that lowered down from the chassis of the vehicle, I reckon it would have been easier to put the survey gear in a boat!