Subsea pumping apparatuses and related methods

The present invention concerns subsea pumping apparatuses and related methods. The apparatuses include one or more subsea pumps, each having an 5 inlet and an outlet, and one or more motors, each configured to actuate at least one pump to communicate a hydraulic fluid from the inlet to the outlet, wherein the subsea pumping apparatus is configured to be in fluid communication with a hydraulically actuated device of a blowout preventer. The subsea pumping apparatuses may include one or more of: a desalination system configured to 10 produce at least a portion of the hydraulic fluid; one or more valves, each configured to selectively route hydraulic fluid from an outlet of a pump to, for example, a subsea environment, a reservoir, and/or the inlet of the pump; and a reservoir configured to store at least a portion of the hydraulic fluid. The apparatuses are configured to be directly coupled to the hydraulically actuated 15 device. Fig. 4a (5/12) 10 b 138 1-l18 30 126 26 2 10Ob 114 50 -- 138 14 = = = = = = 28