The prevention of environmental damage in marine areas is an activity in which the spread of oil or chemical that has leaded into the sea is restricted, and the oil or chemical is recovered. Environmental damage may be caused by fuel spilled from a ship or boat, as a result of running aground, for instance. However, the greatest damage is caused by accidents involving tankers carrying oil.

Such oil and chemical accidents involving vessels can have serious consequences for coastal nature and industries. The most serious ones are long-term adverse effects on the ecosystem. The Baltic Sea is exceptionally vulnerable. The sea area is narrow, so oil and chemical spills in the waters rapidly drift to the shore. That is why prevention measures must be started without delay. Preventing environmental damage at sea is the most efficient and affordable option. If the shore is soiled by an oil discharge, for example, the resulting damage and costs will increase several times.