The green fleet I referred to was (IIRC it was a long time ago!) the tank ship company which was caught with multiple vessels with identical registry numbers, working in different parts of the world, until one was involved in a fatal accident. Then regulatory agencies found out the duplicity. This was circa 1980 or so. Its been done before. It would appear the same method is being done here. There is no way that is the same tug in the pics. Different sheer, bow, house, wheehouse, stack, bits, waist etc etc etc. The only commonality is the black fenders.