Abstract: The method of transferring compressed gas at from a first tank to a second tank without decompressing the compressed gas and then re-pressuring the compressed gas comprising filling the second tank with a fluid, connecting a first fluid connection on the first tank to a second fluid connection on the second tank with a first line with one or more first valves, connecting a first gas connection on the first tank to a second gas connection on the second tank with a second line with one or more second valves, opening the first valves and the second valves to allow the compressed gas to pressurize the fluid, and pumping the fluid in the second tank into the first tank, thereby causing the compressed gas in the first tank to be displaced into the second tank.

Abstract: The method of transferring compressed gas at from a first tank to a second tank without decompressing the compressed gas and then re-pressuring the compressed gas comprising filling the second tank with a fluid, connecting a first fluid connection on the first tank to a second fluid connection on the second tank with a first line with one or more first valves, connecting a first gas connection on the first tank to a second gas connection on the second tank with a second line with one or more second valves, opening the first valves and the second valves to allow the compressed gas to pressurize the fluid, and pumping the fluid in the second tank into the first tank, thereby causing the compressed gas in the first tank to be displaced into the second tank.

Abstract: The method of removing a first liquid from a subsea pipeline which has a central portion lower than each of the ends of the subsea pipeline by pumping a second lower density fluid into the pipeline and the either removing the second lower density fluid by either displacing it with gas or evaporating the second lower density fluid to a gas.

Abstract: The method of providing an accessible outlet on a subsea pipeline which has an unknown rotational orientation comprising connecting a first end of a flexible hose to the subsea pipeline, providing a multiplicity of connected bend restrictor sections around the flexible hose to restrict the bending of the hose, and providing buoyancy to the end of the hose such that the second end of the hose will remain accessible for future operations.

Abstract: The method of charging a tank with a gas product up to a desired pressure and temperature without increasing the gas in the tank to a pressure and temperature higher than a desired pressure and temperature, comprising pressurizing the incoming gas to be put into the tank to a pressure equal to or higher than the pressure of the resident gas already in the tank, cooling the incoming gas to a temperature lower than the resident gas, mixing the incoming gas with the resident gas up to the desired pressure such that the pressure and temperature of the combined gas will be increased without increasing the temperature and pressure of the resident gas to a pressure and temperature higher than the desired pressure or temperature.

Abstract: The method of removing a first liquid from a subsea pipeline which has a central portion lower than each of the ends of the subsea pipeline by pumping a second lower density fluid into the pipeline and the either removing the second lower density fluid by either displacing it with gas or evaporating the second lower density fluid to a gas.

Abstract: A method of providing for the dynamic positioning of a vessel comprising providing a dynamically positioned service boat, linking the service boat to the vessel by a rigid link with a first connection between the link and the vessel, a second connection between the link and the service boat, the combination of connections having 3 degrees of rotational freedom, said supply boat having one degree of axial freedom relative to said vessel, and using the power of the service boat to dynamically position said vessel in a desired location.