Side-Power's new range of proportional speed control DC thrusters allow you to select the power you need for precise boat movements in any weather & sea conditions. The unique hold feature allows you to keep the boat in position at dock or in locks. Side-Power 100kg Ignition Sealed gearleg Power: 6.3kW at 10.5 Volts Internal Tunnel Diameter: 185mm Propulsion System: Twin 5-Blade Boat Size: 40 to 56' Battery Capacity: 1025 CCA SAE