Vetus Bow Thruster Propeller. 7-9/32" Diameter. This 6-bladed propeller suitable for the BOW50/60/75/80 and 95 bow thusters. It can also be used as a replacement propeller set for the latest 60, 75 and 95kgf models. Working in close collaboration with the Maritime Research Institute Netherlands (MARIN), the world-famous hydrodynamic laboratory, VETUS has optimised the performance of its thrusters. This has been achieved by utilising a unique propeller blade profile. As cavitation produces unwanted noise, this new blade design offers a major reduction in operating sound levels. Moreover, the application of this new propeller reduces the current consumption by up to 10%.