Thordon Bearings sums it up

Converting propeller shaft bearings to seawater-lubricated from the traditional oil-lubricated systems prevents millions of litres of operational oil from polluting the world’s oceans. Now that figure is quantifiable thanks to a bespoke modelling tool developed by Canada-based Thordon Bearings.

Thordon Bearings has launched an Oil Savings Calculator to quantify the reduction in oil pollution when a ship moves from oil-based lubricant systems to seawater-based

Converting propeller shaft bearings to seawater-lubricated from the traditional oil-lubricated systems prevents millions of litres of operational oil from polluting the world’s oceans. Now that figure is quantifiable thanks to a bespoke modelling tool developed by Canada-based Thordon Bearings.