Nowadays, people from all over the world pay particular attention to the environment and environmental protection issues. The pollution of the world ocean with harmful microorganisms by sea transport is a quite critical problem. International Convention for the Control and Management of Ships’ Ballast Water and Sediments (BWM Convention) came into force on 8 September 2017. Purpose of the Convention is to prevent spreading of alien aquatic organisms from one area to another and reduce harm to the marine environment. ...