Type System of The Royal Navy - Types 11-40, Anti-Submarine Escorts

Types 11-40, Anti-Submarine Escorts

• Type 11 : Diesel powered anti-submarine frigate based on hull of Type 41 / 61. Not built.
• Type 12 Whitby : Steam powered, high-speed first-rate anti-submarine frigate.
• Type 12M Rothesay : Improved Type 12 design.
• Type 12I Leander : Modified Type 12, general purpose frigate.
• Type 14 Blackwood : Steam powered, high-speed, second rate anti-submarine frigate.
• Type 15 : High-speed anti submarine frigate, full conversion of wartime destroyer hulls.
• Type 16 : High-speed anti submarine frigate, limited conversion of wartime destroyer hulls.
• Type 17 : Third rate anti-submarine frigate, analogous to wartime corvettes. Not built.
• Type 18 : High-speed anti submarine frigate, intermediate conversion of wartime destroyer hulls. Not built.
• Type 19 : Very high speed (42 knot) gas turbine powered anti-submarine frigate. Not built.
• Type 21 Amazon: General purpose, gas-turbine powered commercially designed frigate.
• Type 22 Broadsword : Large, gas-turbine powered, anti-submarine frigates.
• Type 23 Duke : Gas-turbine and diesel powered, anti-submarine frigates. Smaller and less expensive than the Type 22, with similar capabilities.
• Type 24 : Cheap frigate design intended for export. In RN service would have served as a towed array ASW ship. Not built.
• Type 25 : Design intended to have almost the capability of a Type 22 but at only three-quarters of the cost. Much of the thinking, including the diesel-electric machinery, went into the Type 23. Not built.
• Type 26 : Future Surface Combatant (C1 variant) - referred to by First Sea Lord Sir Mark Stanhope in his speech to the International Institute for Strategic Studies in March 2010.