From Wiki she's presumed sunk next month:
On 23 February 1943 Turbulent sailed from Algiers for a patrol in the Tyrrhenian Sea. On 1 March she attacked and sank the Italian steam-ship Vincenz. On the 11th she is known to have attacked the mail ship Mafalda. The following morning the anti-submarine trawler Teti II sighted the periscope and conning tower of a submarine and attacked, it is believed, without success. Turbulent did not respond to any further messages and did not return when expected on 23 March. It is thought that Turbulent fell victim to a mine off Maddalena, Sardinia. The wreck has never been found and any reference to its discovery is incorrect.