conventional profile approximating that of a merchant ship, and thus were similar to Q-ships. In July 1917, Worsley was appointed commander of the PC.61, one of the later P-boats, with Joseph Stenhouse as his first officer. The PC.61, commissioned on 31 July 1917, was equipped with a semi-automatic gun that was hidden by a tarpaulin suspended from crane derricks when not in use. She also had a ram at her bow. Shortly after its commissioning, Worsley took his new command to sea on patrol. Most patrols were uneventful; sometimes U-boats were sighted and pursued, but they got away. Occasionally torpedoes were fired at his ship. Worsley felt the PC.61 was too easily identified as a Royal Navy vessel against which U-boats were too cautious to make a surface attack. The submarine would attack with torpedoes while submerged. On 26 September 1917, Worsley and the PC.61 were on patrol south of Ireland when a U-boat, , torpedoed a nearby tanker. Worsley gradually slowed his ship's propellers, hoping to deceive the U-boat's crew into thinking his P-boat was leaving the area and luring it to the surface. The deception was successful and the UC-33 surfaced, intending to sink the tanker with its deck gun. Worsley immediately ordered full speed ahead and, realising that he would lose time in manoeuvring his ship into a position in which she could use her guns, set a course to ram the U-boat. At high speeds the ship's ram lifted out of the water, and Worsley had to reduce speed at the right moment for it to be at the best height to hit the submarine. He timed it perfectly and hit UC-33 midships as it was submerging. The submarine rapidly sunk with all hands except the captain, who gave Worsley a silver whistle after being rescued. The damaged tanker was towed to Milford Haven in Wales, which took 12 hours in an area where other U-boats were known to be lurking. For his role in the sinking of the UC-33, Worsley was awarded the Distinguished Service Order (DSO) and Shackleton sent him a telegram congratulating him on his success. Worsley conducted patrols with the PC.61 for several more months. In September 1918, he was given command of HMS Pangloss, a Q-ship operating in the Mediterranean and which had been commanded by Commander Gordon Campbell. With the war nearly over, Worsley did not anticipate much excitement in