The Mk 45 Mod 4A Medium Calibre Gun on HMS Glasgow, the first Type 26 frigate, is capable of firing 5-inch shells weighing up to 31.5 kg at speeds between 1,841 and 2,351 mph—up to Mach 3, or three times the speed of sound, UK Defence Journal reports.
With an effective range of up to 37 km (20 nautical miles), the Mk 45 Mod 4A is not just about power but precision.
