A floating dock includes sheet metal clips on its outboard side. The clips carry utility lines that extend into a utility tower mounted on one of many inter-connected buoyant wharf modules forming the dock. The clip, in combination with wales that connect the outboard sides of the modules together, provide an enclosed volume for the utility lines. Contact between the utility lines and a metal base of the clips is prevented by a pair of electric insulating sleeves, each having a slot that fits into each edge of utility clip base. The module carrying the tower includes a tunnel and a depression in a deck of the dock, under the tower. Utility lines from a side of the modules opposite from the side carrying the clips extend through the tunnel, into the tower via the depression. Utility lines in the clips go into the tower via the depression and aligned openings in the tower base and depression.