1)Tunnel thruster unit Diameter of the propeller: 1100mm Number of the propeller blade: 4 Input power: 280KW Nominal thrust: About 40KN Propeller speed: 560r/min Driven shaft speed: 1480r/min 2)Driving motor Norme: IEC Install mode: vertical Power: 110V/60HZ Working: S2-30min Isolation class: Class F