Newly-developed magnetic tunnel thruster delivered to Norway's Olymic Shipping by Rolls-Royce for its AHTS 'Olymic Octopus'. Tunnel thrusters are positioned fore and aft on a wide range of ships and provide sideways thrust for maneuvering and holding position in rough seas. The TT-PM offers numerous advantages over traditional tunnel thrusters, including a 25% increase in power output of from the same size propeller, significant reduction in noise and vibration, and can be removed underwater, eliminating the need for dry docking.