Rolls Royce

A pulling version of the Aquamaster azimuthing thruster is being developed by Rolls-Royce. The unit uses a mechanical drive in a `C` configuration to take the power to the propeller. Units up to 6MW will be available and the pulling design has an efficiency advantage of 4-8% for ships with service speeds above 14-18 knots. This comes from the propeller operating in clean water, and a slimmer pod/strut that is also used to recover energy from the water.