The corvettes were armed with one QF 4-inch Mk XIX gun mounted forward.Mk XIX = Mark 19. Britain used Roman numerals to denote Marks (models) of ordnance until after World War II. This was the nineteenth model of British QF 4-inch gun Anti-air armament varied from 4 to 10 Oerlikon 20 mm cannons.Brown 2007, p.126 For ASW purposes, the ships were equipped with one three-barreled Squid anti-submarine mortar with 81 projectiles. The ships also had two depth charge throwers and one depth charge rail on the stern that came with 15 depth charges.
