Abstract: A device for retrieving a control pod from a subsea BOP stack or deploying a control pod to a subsea BOP stack includes a base having a longitudinal axis, a first end, and a second end axially opposite the first end. The base includes a plurality of axially adjacent bays positioned side-by-side between the first end and the second end. Each bay is sized to hold one control pod. In addition, the device includes a trolley moveably coupled to the base. The trolley includes a first stall and a second stall axially adjacent the first stall. Each stall is configured to hold one control pod. Further, the device includes a housing fixably coupled to the base. Still further, the device includes a control pod actuation assembly coupled to the housing. The control pod actuation assembly is configured to move the trolley axially relative to the base and the housing to align each stall of the trolley with at least one bay of the base.

Abstract: A method for replacing a first control pod of a BOP stack includes (a) lowering a control pod exchange device subsea. In addition, the method includes (b) coupling the control pod exchange device to the BOP stack. Further, the method includes (c) transferring the first control pod from the BOP stack to the control pod exchange device after (b). Still further, the method includes (d) lifting the control pod exchange device to the surface after (c).

Abstract: A device for retrieving a control pod from a subsea BOP stack or deploying a control pod to a subsea BOP stack includes a base having a longitudinal axis, a first end, and a second end axially opposite the first end. The base includes a plurality of axially adjacent bays positioned side-by-side between the first end and the second end. Each bay is sized to hold one control pod. In addition, the device includes a trolley moveably coupled to the base. The trolley includes a first stall and a second stall axially adjacent the first stall. Each stall is configured to hold one control pod. Further, the device includes a housing fixably coupled to the base. Still further, the device includes a control pod actuation assembly coupled to the housing. The control pod actuation assembly is configured to move the trolley axially relative to the base and the housing to align each stall of the trolley with at least one bay of the base.

Abstract: A method for replacing a first control pod of a BOP stack includes (a) lowering a control pod exchange device subsea. In addition, the method includes (b) coupling the control pod exchange device to the BOP stack. Further, the method includes (c) transferring the first control pod from the BOP stack to the control pod exchange device after (b). Still further, the method includes (d) lifting the control pod exchange device to the surface after (c).