Two-compartment oil tanks - for installation on an oil tanker and prevention of oil pollution at sea

摘要

Tank for holding hydrocarbons e.g. a tank on an oil tanker designed particularly to avoid oil pollution at sea, and comprising an internal, deformable, container dividing the tank into inner and outer compartments of variable capacity. Ballast water is stored in the outer and crude oi lin the inner compartment for the outward journey and then refined oil can be stored in the outer compartment having reduced the size of the inner compartment, for the return journey. Avoids discharge of tank residues into the sea.