10. Brazilian Modified-Clemenceau Class
Bought from the French navy by the Brazilian navy for $12 million in 2000, the Brazilian Modified-Clemenceau Class came from the French Clemenceau aircraft carrier.
It was commissioned in 1963 and has since been renamed as the São Paulo and undergone a great deal of renovation. As a result, the ship is now able to carry up to 39 aircraft. It was announced in 2014 that the São Paulo will continue in active service until 1939.