example in the event of a malfunction of the primary hydraulic route hot stab 1008 could be connected to the intervention panel so that the fluid forces valve 1109 to shift and allows fluid to flow to bop function 1107 via associated hard piping valves 1106 and 1109 can be a variety of known valves such as a shuttle valve the backup supply route preferably begins downstream of regulator 1104 and leads to valve 1110 rigidly attached to the bop which can be an isolation valve operable by an rov or another suitable valve to prevent flow through the backup route until needed flow through valve 1110 leads to valve 1111 which leads to hose 1009 pilot hydraulic signals from spare outlets or non critical functions if no spares exist such as hot spare 1112 can act as a hot spare and can be used to shift valve 1111 to supply regulated fluid through hose 1009 to stab 1008 in one embodiment valve 1111 is a lmrp mounted spare sub plate mounted spm valve piloted by a hot stab solenoid because all key components are rigidly fixed to the bop apparatus point failures are eliminated and a reliable source of operational redundancy is provided thus when a failure occurs the rov can route the flying lead hydraulic hot stab hose 1009 leading from spare function 1010 to the appropriate rov input on the intervention panel 1003 or 1004 located on the lmrp or bop stack the hot stab now supplies the hydraulic output in place of the output from the failed pod circuit the spare function on the bop control panel on surface.