Abstract: An offshore bulk fluid transfer system and method for its deployment in both shallow and deep water is disclosed. The system is adapted for transfer of fluids between a tanker and another location. Deep water embodiments of the invention provide for a three and four stair step method for deploying the base on the sea floor. Additionally, a method of retrieving the system from the sea floor is disclosed. The offshore bulk fluid transfer system comprises a base and buoyancy tanks attached to the base flotation for the system during its transportion to a mooring location. Buoyancy tanks are adapted for flooding to allow the system to be deployed on the sea floor.

Abstract: A submersible large diameter pipe swivel is provided with seal means which is designed and adapted to allow small radial and axial relative movements (wobble) between the pipe and the swivel joint, while maintaining full integrity of the seal and which, being unaffected by such wobble, therefore offers minimum resistance to rotation.

Abstract: A single anchor leg mooring and tanker cargo transfer system has a base with an anchor leg pipe shaft having a horizontally swiveling housing thereon to which are attached vertically pivoting cargo hose arms. The arms have widely spaced, parallel portions extending a substantial distance beyond the base portion for augmenting the torque applied to the swivels by the cargo hoses. The hose arms are stabilized and limited in their vertical pivoting by a balanced lever structure pivotally mounted on the base and carrying buoyancy tanks. Bumpers limit the vertical pivoting of the lever structure flexing of the hose arms secured thereto.