7 Mechanical tools, namely, manipulators, torque tools, cutting tools, mechanical connectors, hot stabs, docking tools, brushes and cleaning tools, water pumps and ejectors, and modules, namely, hydraulic and/or electric power units, signals and/or power communication units, power source and battery units, mechanical tools units, visual and/or acoustic and/or electromagnetic inspection units for use on remotely-operated vehicles (ROVs); mechanical tools, namely, manipulators, torque tools, cutting tools, mechanical connectors, hot stabs, docking tools, brushes and cleaning tools, water pumps and ejectors, and modules, namely, hydraulic and/or electric power units, signals and/or power communication units, power source and battery units, mechanical tools units, visual and/or acoustic and/or electromagnetic inspection units for use on autonomous underwater vehicles (AUVs); apparatus in the nature of lifting, launching and recovery machines for underwater recovery of remotely-operated vehicles (ROVs); apparatus in the nature of lifting, launching and recovery machines for underwater recovery of autonomous underwater vehicles (AUVs); industrial robots; industrial robots for underwater use