Tanker barges are a common sight in US waters but much less common elsewhere. US Crewing regulations require a much larger crew fro a tanker of similar size, However a Tug requires a much smaller crew, and the barge, an even small crew then the tug. LoopHole…

Towing the barge in.

Turning.

Taking the barge up on the hip.

Tieing up at the Dock.