GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
I give. Where are we headed with this? Looks like it is designed to push things around. I know of couple of thousand HP river boats with pushing attachments on the bow and sophisticated steering-propulsion systems that allow them to navigate sideways, like in digging a barge out of a large mooring, that push 1000's of tons of barges up and down major rivers.
At Isle Royale NP they have a whole fleet of work Boats and some Barges, something like that one would probably be used for dock maintenance . They also have larger Tugs and Barges for transporting fuel, equipment, materials etc across the Lake.