I refer the hon. Member to the answer given by my noble Friend the Minister of State for Defence, Earl Howe to the noble Lord, Lord Campbell of Pittenweem in the House of Lords to Question HL5630 on 8 February 2016. The Type 45 Destroyers were designed for world-wide operations, from sub-Arctic to extreme tropical environments and continue to operate effectively in the Persian Gulf and South Atlantic at all times of the year.