At launch, "Voyager"s main armament consisted of four single QF 4-inch Mark V guns. This was supplemented by a quad-barelled QF 2-pounder naval gun, and five .303 inch machine guns of various types. The destroyer was also fitted with two 3-tube 21 inch (533 mm) torpedo sets, two depth charge chutes, and four depth charge throwers. Later modifications to her armament included the installation of a second 2-pounder gun and two Oerlikon 20 mm cannon, and the removal of one of the torpedo tube sets.