Abstract: A remotely operated underwater vehicle system includes a hull having a front end and a tail positioned to the rear of the front end. The remotely operated underwater vehicle may include a first and second side thrust module configured to drive the vehicle in forward and reverse directions and removably connected to the hull, and a rear thrust module configured to drive the tail up and down and removably connected to the tail. The vehicle may include a tether and buoy to facilitate communication with a remote input device. A power source, such as a battery, may be positioned in the hull to power the vehicle and the buoy. The buoy may house a communication source configured to communicate with the input device. The tether is configured to transfer power and communication signals from the buoy to the hull. The buoy may float on a water surface to relay communication between the input device and the hull.