 Hezlet undertook long-range patrols in the Indian and Pacific oceans, earning him his first Distinguished Service Order (DSO).He sank the long-range German U-boat U-859, on 23 September 1944, near the Sunda Strait, whose position had been identified through 'Ultra' signals decrypts.On 27 October 1944, "Trenchant" deployed two Mk II Chariot manned torpedoes 6.5 nautical miles off Phuket in Thailand on a mission to destroy two salved former Italian merchant ships in what would prove to be one of the most successful uses of Chariots of the whole War.