http://en.wikipedia.org/wiki/Type_42_destroyer
The Type 42 or Sheffield class, are guided missile destroyers of the Royal Navy.
Royal Navy
Batch 1
Sheffield D80
Birmingham D86
Newcastle D87
Glasgow D88
Cardiff D108
Coventry D118
The HMS Sheffield was commissioned 34.59 years after the birth date listed for Patrick Stewart. The distance from Mirfield to Sheffield is about 30 miles.
From 7/13/1940 to 2/16/1975 is: 34 years, 218 days
218 / 365 = 0.59
From 7/13/1940 to 2/16/1975 is: 34.59 years
34-59
http://en.wikipedia.org/wiki/HMS_Sheffield_%28D80%29
HMS Sheffield (D80) was the second Royal Navy ship to bear the name Sheffield, after the city of Sheffield in Yorkshire. She was a Type 42 Guided Missile Destroyer laid down by Vickers Shipbuilding and Engineering at Barrow-in-Furness on 15 January 1970, launched on 10 June 1971 and commissioned on 16 February 1975.
The ship was part of the Task Force sent to the Falkland Islands during the Falklands War. She was struck by an Exocet cruise missile fired by a French-made Dassault Super Étendard belonging to the Argentine Navy on 4 May 1982 and finally scuttled on the 10 May 1982.
http://news.bbc.co.uk/onthisday/hi/dates/stories/may/4/newsid_2481000/2481405.stm
On This Day 4 May
1953: Duke of Edinburgh gets his wings
The Duke of Edinburgh has been awarded his pilot's "wings" during a private ceremony at Buckingham Palace.
From 7/16/1963 to 12/3/1976 is: 13 years, 4 months, 17 days
30 * 0.59 = 17.7 days
From 7/16/1963 to 12/3/1976 is: 13 years, 4.59 months
1-34-59
http://en.wikipedia.org/wiki/HMS_Birmingham_%28D86%29
HMS Birmingham (D86) was a Type 42 destroyer laid down by Cammell Laird and Company, Limited, at Birkenhead on 28 March 1972, launched on 30 July 1973 by Lady Empson, wife of Sir Derek Empson and commissioned on 3 December 1976.
She was named for the city of Birmingham, England.
From 11/26/1976 to 3/23/1978 is: 1 year, 3 months, 3 weeks, 4 days
1-334
http://en.wikipedia.org/wiki/HMS_Newcastle_%28D87%29
Commissioned: 23 March 1978
The eighth and current HMS Newcastle (D87) is a retired Type 42 (Batch 1) destroyer of the Royal Navy, launched in 1973.
From 4/14/1977 to 5/25/1977 is: 41 days
http://en.wikipedia.org/wiki/HMS_Glasgow_%28D88%29
HMS Glasgow (D88) is a Type 42 destroyer of the Royal Navy. She was built at Swan Hunter Shipyard in Wallsend, Tyneside and launched on April 14, 1976 by Lady Kirstie Treacher, wife of Admiral Sir John Treacher. With a displacement of 4,820 tonnes, Glasgow is the 6th and last Batch 1 Type 42 Destroyer in the Fleet. Named after the Scottish city of Glasgow she is the eighth ship to bear the name.
From 11/26/1976 to 9/24/1979 is: 33 months, 4 weeks, 1 day
334-1
http://en.wikipedia.org/wiki/HMS_Cardiff_%28D108%29
Commissioned: 24 September 1979
The third and present HMS Cardiff (D108) is a Type 42 (Batch 1) destroyer of the Royal Navy.
Cardiff was built by Vickers Shipbuilding and Engineering, launched in 1974 by Lady Caroline Gilmore and commissioned in 1979. When decommissioned, she was one of the last ships in the Royal Navy to have been involved in the Falklands War.
She was under the command of Captain M. G. T. Harris for the duration of the Falklands War in 1982. During the conflict, owing to an information exchange failure between the army and the navy, Cardiff's Sea Dart missile system accidentally shot down an Army Air Corps Gazelle helicopter in a blue-on-blue incident; four people were killed. Cardiff made it through the conflict unscathed, while two of her sister-ships - Sheffield and Coventry - were sunk (and Glasgow damaged).
From 3/3/1959 to 10/20/1978 is: 19 years, 231 days
231 / 365 = 0.63 year
From 3/3/1959 to 10/20/1978 is: 19.63 years
'1963'
http://en.wikipedia.org/wiki/HMS_Coventry_%28D118%29
HMS Coventry (D118) was a Type 42 (Sheffield Class) destroyer of the Royal Navy laid down by Cammell Laird and Company, Limited, at Birkenhead on 29 January 1973, launched on 21 June 1974 and commissioned on 20 October 1978.