Castrol BioStat ST, a New Stern Tube Lubricant

Castrol launched a new stern tube oil range, Castrol BioStat ST, for use in stern tubes, CPP systems and stabilizers. It is based on selected synthetic esters and an optimized performance additive system. The lubricant has been specifically designed to provide a good level of lubrication and corrosion protection, good oxidation performance and hydrolytic stability.Castrol BioStat ST is an Environmentally Acceptable Lubricant (EAL) that has been developed and tested to comply with the US Environmental Protection Agency Vessel Incidental Discharges Act (VIDA) 2018…
ABS AIP for "Sterntube-less" Ship

Thordon Bearings said ABS issued an Approval in Principle to the “sterntube-less ship” concept developed in cooperation with the Shanghai Merchant Ship Design & Research Institute (SDARI), the National Technical University of Athens (NTUA) and Thordon Bearings Inc.The design replaces a vessel’s sterntube with an irregular shaped chamber that allows a shorter, water-lubricated propeller shaft to be inspected and maintained while the vessel is afloat, without having to withdraw…