Tank containers with caustic chemicals pollute and destroy the world's waters. They also contribute to dwindling stocks of whales and other ocean mammals; some 45% of endangered ocean species are dying out due to disturbed ecosystems. It is true that a ship can transport more containers than a train. However, overloaded ships and towering waves send roughly 10,000 containers a year tumbling overboard into the depths of the ocean.
The environment is clearly better off with rail. DB Cargo Eurasia transports freight with fewer pollutants and is safer, too.