Oil tankers transport some 2,400 million tonnes of crude oil and oil products around the world by sea. Most of the time, oil is transported quietly and safely.
Measures introduced by IMO have helped ensure that the majority of oil tankers are safely built and operated and are constructed to reduce the amount of oil spilled in the event of an accident. Operational pollution, such as from routine tank cleaning operations, has also been cut.
The most important regulations for preventing pollution by oil from ships are contained in Annex I of the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (MARPOL), The International Convention for the Safety of Life at Sea (SOLAS), 1974 also includes special requirements for tankers.