We have become aware that the US Coast Guard is launching multiple inspections of foreign flag vessels to ascertain whether the Oily Water Separator (OWS) in the engine room is being used improperly or indeed is being bypassed.In a recent incident Coast Guard officers have insisted that the pipeline leading from the OWS to the ship's side be removed for closer internal inspection. Requests have also been made to make the overboard sea valve available for examination. The argument that it is below the waterline is apparently not acceptable, owners being required to use divers to secure it so it can be removed.