… balance in oceans and seas.” According to a study by Germanischer Lloyd, the 2010 production capacity in Germany alone could produce some 800 systems. Press … No. 49/09 | 23.07.2009   Conservative estimates claim that ships pump around 10 billion cubic metres of water annually into special ballast tanks for stability … balance in oceans and seas.” According to a study by Germanischer Lloyd, the 2010 production capacity in Germany alone could produce some 800 systems. … Protecting …