Passage: On 30 November the Russian squadron entered the harbor from the northwest in a triangular formation. Nakhimov maneuvered his fleet so that the Ottoman vessels were between the Russian ships and Sinop’s harbor defenses, shielding his own force and exposing the Ottomans to potential friendly fire. Nakhimov spaced his battleships evenly in two lines, covering the entire harbor with interlocking fields of fire. Russian gunners began to score hits on all the Ottoman targets. The shells fired by Russian guns immediately set Ottoman ships on fire. Panic-stricken sailors found firefighting efforts difficult amidst continued fire and almost constant shrapnel. After about 30 minutes of  combat the Ottoman frigate was shot full of holes and ran aground when her cable was cut. Imperatritsa Maria then attacked the 44-gun frigate Fazli Allah, which caught fire and grounded. Meanwhile, the other Russian ships engaged the Nizamie and Damiad, which were grounded. The Ottoman frigate Navek Bakhri exploded and sank along with the corvette Guli Sephid.Only one Ottoman vessel, the 12-gun paddle frigate Taif, managed to escape the battle while all the others were either sunk or purposely run ashore to prevent sinking. She fled to Constantinople and arrived on 2 December, informing the Ottoman government of the defeat at Sinop. Once the enemy fleet was destroyed the Russians engaged Ottoman shore batteries and destroyed them. During the fighting 37 Russians were killed and 229 were wounded, at least three of the ships of the line were damaged. Ottoman forces lost about 3,000 men killed, 150 were taken prisoner and their leader Osman Pasha was captured.

Question: Who did the Russians attack after destroying the enemy fleet at Sinop?
Ottoman shore batteries