Propeller for ships (monobloc, for nozzle)
KAPLAN 3B / 4B
Austral Propeller
Using this system the bollard pull (i.e. thrust) of trawlers and the like can increase by 25 to 35% while harbour tugs can typically increase 30 to 50% as compared to open propellers. In fact when a nozzle of correct geometric design is combined with an Austral Kaplan propeller, it can mean the same bollard pull could be achieved with a smaller engine providing substantial running cost savings.
