Systems and methods are disclosed that may be configured for transferring a fluid. The fluid may be transferred from a fluid source by which the fluid is under a first differential pressure to a container via use of a pressurizer that can increase the pressurization of the fluid to a second differential pressure. A controller may be used to coordinate operations of various components to allow the pressure generated by the pressurizer to be used to augment the pressure generated by the first differential pressure. Additional embodiments may include use of a mobile fueling unit that may facilitate transfer of the fluid from the container to a vehicle.

A methane transportation system is provided. The system may include a methane source configured to dispense methane at a first location, and an underwater vehicle. The underwater vehicle may include a propulsion system configured to transport the underwater vehicle underwater from the first location to a second location and a vessel defining a storage chamber configured to receive water and the methane from the methane source. The storage chamber of the vessel may have a pressure exceeding one atmosphere and a temperature during transport from the first location to the second location sufficient to form methane clathrate in the storage chamber. The system may further include a methane receiver configured to receive the methane released from the storage chamber at the second location. Related methods are also provided.

A lightweight transport vessel transports compressed natural gas underwater without needing to liquefy the gas for transport.

A lightweight transport vessel transports compressed natural gas underwater without needing to liquefy the gas for transport.