The invention relates to a maritime transport system for oil and the derivatives thereof, which includes a tractor unit with a device for driving at least one floating, rotary spheroid container. The at least one container has two semi-spherical domes, an upper one and a lower one, that are closed at the base end and open at the other, the base of each containing a flat surface. Both domes are assembled with the open ends facing one another and are joined at the circular perimeter thereof by a fitting belt with securing device and a gasket, both being solidly joined together. Inside the container are disposed an upper structure and a lower structure that are solidly connected to connecting beams, defining a self-supporting cube-shaped cage with projecting rotating devices and multiple individual housing cells for at least one tank of fluid to be transported.