of a breakwater on the coast of British Columbia in 1948. Description The E-class ships were slightly improved versions of the preceding D class. They displaced at standard load and at deep load. The ships had an overall length of , a beam of and a draught of . They were powered by two Parsons geared steam turbines, each driving one propeller shaft, using steam provided by three Admiralty three-drum boilers. The turbines developed a total of and gave a maximum speed of . The ships carried a maximum of of fuel oil that gave them a range of at . Their complement was 145 officers and ratings. The ships mounted four 4.7-inch (120 mm) Mark IX guns in single mounts, designated 'A', 'B', 'X' and 'Y' from front to rear. For anti-aircraft (AA) defence, they had two quadruple mounts for the Vickers AA machinegun. The E class was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began. To compensate for the weight of her 60 Mark XIV mines and their rails, two of Expresss 4.7-inch guns, their ammunition, both sets of torpedo tubes, her Two-Speed Destroyer Sweep (TSDS) minesweeping paravanes, and her large boats and their davits had to be removed. She was given small sponsons at the stern to ensure smooth delivery of her mines. Wartime modifications Express had her rear torpedo tubes replaced by a 12-pounder (76 mm) AA gun in July 1940. In February–June 1943, she was converted into an escort destroyer. A Type 286 short-range surface search radar was fitted and a Type 271 target indication radar was installed above the bridge, replacing the director-control tower and rangefinder. The ship also received a HF/DF radio direction finder mounted on a pole mainmast. Her short-range AA armament was augmented by four Oerlikon guns and the .50-calibre machine guns were replaced by a pair of Oerlikons. A split Hedgehog anti-submarine spigot mortar was installed abreast 'A' gun and stowage for 60 depth charges provided; 'Y' gun and the 12-pounder had to be removed to compensate for their weight. By the end of the war, a Type 277 radar had replaced the Type 271, and the Type 286 had been superseded by a Type 291. Construction and career Express, the eighth ship