Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Pennant\nnumber | Name | Builder | Laid down | Launched | Completed | Fate |
| --- | --- | --- | --- | --- | --- | --- |
| F00 | Jervis ‡ | Hawthorn Leslie & Company, Hebburn | 26 August 1937 | 9 September 1938 | 12 May 1939 | Sold for scrap 1949 |
| F22 | Jackal | John Brown & Company, Clydebank | 24 September 1937 | 25 October 1938 | 31 March 1939 | Bombed off Mersa Matruh on 11 May 1942 and scuttled by Jervis following day |
| F34 | Jaguar | William Denny & Brothers, Dumbarton | 25 November 1937 | 22 November 1938 | 12 September 1939 | Torpedoed by German U-boat U.652 off Sollum, 26 March 1942 |
| F46 | Juno\n(ex-Jamaica) | Fairfield Shipbuilding & Engineering Company, Govan | 15 October 1937 | 8 December 1938 | 25 August 1939 | Bombed and sunk south of Crete, 21 May 1941 |
| F53 | Janus | Swan Hunter & Wigham Richardson, Wallsend | 29 September 1937 | 11 October 1938 | 5 August 1939 | Torpedoed and sunk off Anzio by German aircraft, 23 January 1944 |
| F61 | Javelin\n(ex-Kashmir) | John Brown | 11 October 1937 | 21 December 1938 | 10 June 1939 | Sold for scrap 1949 |
| F72 | Jersey | J. Samuel White, Cowes | 1937 | 26 September 1938 | 28 April 1939 | Mined off Valletta 2 May 1941, broke in two and sank 2 days later |
| F85 | Jupiter | Yarrow & Company, Scotstoun | 28 September 1937 | 27 October 1938 | 25 June 1939 | Hit a Dutch mine during the battle of the Java Sea 27 February 1942 and sank the following day |
| - | Jubilant | - | - | - | - | Ordered March 1937, cancelled December 1937 |
Question:
how many of these ships were sank?
Answer:
4