qnli question: After the battle of Sinop, what steamship approached the Port of Sevastopol to show support for Turkey? sentence: To show support for Turkey after the battle of Sinop, on the 22th of December 1853, the Anglo-French squadron entered the Black Sea and the steamship HMS Retribution approached the Port of Sevastopol, the commander of which received an ultimatum not to allow any ships in the Black Sea.