Havila is set to retrofit its supply vessel Havila Tampen with a pair of Ulstein Aquamaster Azipull azimuth thrusters for main propulsion, replacing conventional azimuth thrusters. The Azipull azimuth thruster from Rolls-Royce uses a pulling propeller ahead of the streamlined leg and lower gear house, and a simple gear drive transmission. The units for Havila will be the largest built to date: type AZP120 designed for inputs up to 3,000 kW, but in this case each transmitting 2,500 kW. "We have chosen to pioneer this new propulsor in offshore service because we believe that it will give us significant fuel savings — in the region of seven to eight percent compared with traditional thrusters — through its improved hydrodynamic design…