Thordon Bearings has indicated a polymer propeller shaft bearing lubricated by seawater could generate significantly less underwater radiated noise (URN) than metal bearings lubricated by oil.
The Canadian polymer bearings specialist says the low URN of a ship operating with seawater-lubricated propeller shaft bearings is one of the reasons why the arrangement is favoured by the naval, cruise and fisheries sectors.
“It is completely logical that seawater-lubricated polymer bearings...