RWO's ballast water treatment system received RMRS Type Approval. Classification society Russian Maritime Register of Shipping (RMRS) has issued a type approval certificate for the RWO ballast water treatment system CleanBallast. During the international exhibition NEVA in St. Petersburg, Victor V. Grishkin, Senior Principal Surveyor at RMRS, handed over the certificate to RWO. CleanBallast can now be installed on any Russian-flagged vessel. The modular ballast water treatmentā¦