Events
On This Day - March 20
| 1900 | Rosario 1898 - 1921 | Commissioned at Sheerness on 20 March, 1900 for service on the China Station |
| 1909 | C 19 (I 49) | Launched |
| 1909 | C 26 (I 56) | Launched |
| 1914 | W 4 | Laid Down |
| 1917 | H 27 | Laid Down |
| 1918 | H 26 | Completed |
| 1941 | Graph (P 715) | Launched |
| 1942 | X 3 (Piker) | Completed |
| 1944 | Graph (P 715) | Lost when she ran aground on the west coast of the Island of Islay, Scotland |
| 1944 | Unswerving (P 63) | HMS Unswerving sinks a Greek sailing vessel with gunfire off Crete. |
| 2025 | Dreadnought (S 126) | A keel laying ceremony was held in the DDH at Barrow. Prime Minister Sir Keir Starmer performed the honours as work started on the backbone of the first of four third-generation ballistic missile submarine in Barrow, nearly ten years since the first steel was cut. To mark the key moment in the boat’s construction and to honour more than 150 years of shipbuilding in the town, 125 of them building submarines for the Royal Navy, His Majesty the King bestowed the honorary title ‘Royal’ on the Port of Barrow |
