This requirement requires contractor to provide harbor support services and ship handling in specified zones in the Charleston, SC region. The contract will require towing, twisting, mooring, berthing, docking, streaming, shifting, assisting, pulling, and escorting those Vessel types identified in Attachment 1 to the PWS and miscellaneous other vessels, barges, submarines, crafts, hulls, sleds, derricks, lighters, and objects of whatsoever nature including anything carried thereon. Government reserves the right to use Government-owned, controlled, or chartered Tugs or vessels separately or jointly with Owner’s Vessels in the performance of any services listed in this