Waterjet manufacturers deal with weighty matters

摘要

For fast ferry applications, weight is always a key factor when selecting waterjet technology, alongside power, environmental performance and durability. Consequently, introducing lighter waterjet technology has been a key area of focus for several companies active in this sector. Wartsila has been investigating the benefits of designing its modular waterjets using duplex stainless steel. Those components that come under the highest stress, the shaft and impeller, have already been delivered to some customers in duplex stainless steel, but Wartsila has now also made the outboard parts available in this material instead of 316 grade stainless steel.