sentences:  HMS "Syrtis" was a third-batch S-class submarine ordered by the British Admiralty on 25 January 1941.She was laid down in the Cammell Laird shipyard in Birkenhead on 14 October 1941 and was launched on 4 February 1943.On 21 April "Syrtis", under the command of Lieutenant Michael Hugh Jupp, sailed to Holy Loch, where she was commissioned into the Royal Navy two days later.