Vetus Marine Part BL25500 Bronze stern tube with cutlass bearing, Ø 25 mm, 500 mm in length
Stern tube and stern tube bearings
Stern Tube, Working principle. - YouTube
Thordon Bearings Retrofitting Ocean-Going Vessels With Seawater-Lubricated Propeller Shaft Bearings To Reduce Stern-Tube Oil Pollution; Annual Leaks Estimated at About 2x Exxon Valdez Spill - Green Car Congress