VETUS 6 Blade f/35/55 KGF Bow Thrusters [SET0087]6 Blade for 35 55 kgf Bow Thrusters Propeller 6 blade, diameter 146mm, for 35 55 kgf bow thrusters. Set includes all mounting hardware for propeller. Zinc sold separately. Working in close collaboration with the Maritime Institute Netherlands (MARIN), the world famous hydrodynamic laboratory, VETUS has optimized the performance of its thrusters. This has been achieved by utilizing a unique propeller blade profile, which creates little or no