HMS Tireless (P 327), a Taciturn- or T-class submarine

British T class submarine

The Royal Navy's T class of diesel-electric submarines was designed in the 1930s to replace the O, P and R classes. Fifty-three members of the class were built just before and during the Second World War, where they played a major role in the Royal Navy's submarine operations...

, was the first ship of the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 to bear that name. She was authorized under the 1941 War Emergency Program and her keel was laid down on 30 October 1941 at Portsmouth Dockyard. She was launched

Ship naming and launching

The ceremonies involved in naming and launching naval ships are based in traditions thousands of years old.-Methods of launch:There are three principal methods of conveying a new ship from building site to water, only two of which are called "launching." The oldest, most familiar, and most widely...

 on 19 March 1943 and was completed on 18 April 1945.

Commissioned towards the end of the Second World War, she had a relatively quiet career and survived it. She remained in service until August 1963 when she was put on the sale list. She was broken up during 1968.