An ocean going vessel with interchangeable superstructure and hull in which the superstructure has control units for controlling propulsion and steering, as well as components for communication and navigation. The superstructure and the hull each have an interface providing quick connect and disconnect capability between the control units of the superstructure and the components being controlled of the hull. A system for interchanging superstructures and hulls for ocean going vessels is enabled in which the superstructure of an inbound vessel is removed and transferred to an outbound hull with the use of a crane at the port facility. This facilitates quick turnaround time of the superstructure and crew of the inbound vessel. This also enables inbound ship hulls to be inspected without delaying the outbound hull that has been preloaded from being shipped out of port with the transferred superstructure.