This is the Miller Richmond, a shallow-draft tug that belongs to
JJM Construction, a company that does, among other things, marine
construction and dredging, so her primary role is hauling JJM barges.
She was built in 1974 by Allied Shipyards in Vancouver as the Carlyn McMurren, one of 3 tugs built by Allied that year for the Northern Construction Co. She became the Miller Richmond in 1987. I think she may be for sale, but only if you have a spare million.