An apparatus for launch and recovery of a submersible vessel from and to an off-shore site, where the apparatus comprises: - a support platform placed on said off-shore site and a gantry pivotally mounted to the support platform, said gantry comprising an A-frame having side supports and a top beam suspended between the side supports of the gantry, - a displacement unit for selectively displacing the entire gantry or a part of the gantry from an in-board position within boundaries of the off-shore site to an out-board position outside boundaries of the off-shore site, - a launch/recovery cable passing said gantry and having a first end for suspending the submersible vessel from the off-shore site, when the submersible vessel is launched and recovered, - a winch coupled to a second end of the launch/recovery cable, the winch being operable to unwind and wind the launch/recovery cable when launching and recovering the submersible vessel, respectively, - an actively operated gimbal coupled between said first end of the launch/recovery cable and the submersible vessel, when the submersible vessel is suspended by the launch/recovery cable, - actuators provided between the actively operated gimbal and the submersible vessel, the actuators operable for displacing the submersible vessel in relation to the actively operated gimbal in order to maintain the submersible vessel in a selected position in relation to the actively operated gimbal and in order to stabilize a position of the submersible vessel in relation to the off-shore site, when being launched and recovered, - the actuators being electrically operated actuators, and the apparatus comprising rechargeable batteries for providing electrical power to the electrically operated actuators, - an electrical system controlling handling means for launch and recovery of said submersible vessel from/to an off-shore site, and charging means for charging the chargeable battery, wherein the charging means is capable of collecting electrical energy from at least one moveable part, which moves relative to the A-frame, characterized in that - the batteries are capable of being charged by any electrical motor (27A, 27B, 30A, 30B) of any pitch actuators and/or roll actuators (7, 14), during passive rotation of the electrical motor (27A, 27B, 30A, 30B), compared to active rotation when operating as a motor, and when the motor axle is applied with a torque, where the motor (27A, 27B, 30A, 30B) is capable of generating electrical power, - during launch of the submersible vessel from the gantry and until reaching sea level, movement of the submersible vessel is stabilized by any of the actuators (7, 14), stabilizing comprising the electrical motors (27A, 27B, 30A, 30B, 33A, 33B, 35, 38) of the actuators (7, 14) dampening movement of the gimbal, during which dampening of movement electrical power is generated for charging the batteries. - a support platform placed on said off-shore site and a gantry pivotally mounted to the support platform, said gantry comprising an A-frame having side supports and a top beam suspended between the side supports of the gantry, - a displacement unit for selectively displacing the entire gantry or a part of the gantry from an in-board position within boundaries of the off-shore site to an out-board position outside boundaries of the off-shore site, - a launch/recovery cable passing said gantry and having a first end for suspending the submersible vessel from the off-shore site, when the submersible vessel is launched and recovered, - a winch coupled to a second end of the launch/recovery cable, the winch being operable to unwind and wind the launch/recovery cable when launching and recovering the submersible vessel, respectively, - an actively operated gimbal coupled between said first end of the launch/recovery cable and the submersible vessel, when the submersible vessel is suspended by the launch/recovery cable, - actuators provided between the actively operated gimbal and the submersible vessel, the actuators operable for displacing the submersible vessel in relation to the actively operated gimbal in order to maintain the submersible vessel in a selected position in relation to the actively operated gimbal and in order to stabilize a position of the submersible vessel in relation to the off-shore site, when being launched and recovered, - the actuators being electrically operated actuators, and the apparatus comprising rechargeable batteries for providing electrical power to the electrically operated actuators, - an electrical system controlling handling means for launch and recovery of said submersible vessel from/to an off-shore site, and charging means for charging the chargeable battery, wherein the charging means is capable of collecting electrical energy from at least one moveable part, which moves relative to the A-frame, characterized in that - the batteries are capable of being charged by any electrical motor (27A, 27B, 30A, 30B) of any pitch actuators and/or roll actuators (7, 14), during passive rotation of the electrical motor (27A, 27B, 30A, 30B), compared to active rotation when operating as a motor, and when the motor axle is applied with a torque, where the motor (27A, 27B, 30A, 30B) is capable of generating electrical power, - during launch of the submersible vessel from the gantry and until reaching sea level, movement of the submersible vessel is stabilized by any of the actuators (7, 14), stabilizing comprising the electrical motors (27A, 27B, 30A, 30B, 33A, 33B, 35, 38) of the actuators (7, 14) dampening movement of the gimbal, during which dampening of movement electrical power is generated for charging the batteries.