Events
On This Day - August 18
| 1920 | P 553 | Launched |
| 1932 | L 9 | Foundered in Hong Kong harbour during a typhoon HMS L9 broke adrift from a buoy in Hong Kong during a typhoon. The submarine struck a merchant ship and damaged a dockyard wall before foundering. She was later salvaged. |
| 1941 | P 33 | HMS P33 was lost On 6th August 1941 HMS P33 sailed from Malta with orders to intercept an Italian convoy bound for Libya. On 18th August HMS P32 reported hearing a prolonged depth charge attack that lasted for two hours. When the attack was finally over P32 attempted to contact P33 but received no response and it is almost certain that P33 had perished in the attack. |
| 1941 | P 32 | Sunk by mine off Tripoli |
| 1942 | Safari (P 211) | HMS Safari torpedoes and sinks the Italian merchant Perseo near Cape Carbonara, 15 nautical miles south of Serpentara, Sardinia and later attacked the Italian submarine Bronzo. |
| 1943 | Spearhead (P 263) | Laid Down |
| 1944 | Scotsman (P 243) | Launched |
| 1945 | Statesman (P 246) | HMS Statesman torpedoes and sinks a derelict wreck drifting in the Straits of Malacca, described as probably a coaster. |
| 1964 | Ausonia (F53) 1921 - 1965 | Returned to Portsmouth from Malta & sold to Spanish shipbreakers |
| 1966 | Onyx (S 21) | Launched |
| 1969 | Conqueror (S 48) | Launched |
