Its nice when technology makes things better, but it really nice when tech makes things better and cheaper.
MarineLink is reporting Aker Arctic is claiming they have developed new parameters, “strength dimensioning criteria,” that will allow the use of bronze propellers on high ice class vessels, and that an ice class 1A vessel is now operating with bronze propellers designed and supplied by Aker Arctic.
“While bronze is not as strong as stainless steel, it has a number of benefits in marine applications such as good resistance against corrosion and cavitation damage. The material is also easy to work with both during manufacturing as well as when carrying out maintenance and repairs. Compared to a similarly-sized stainless steel propeller, a bronze screw is also cheaper.”