HMS Sirdar was an S class submarine

British S class submarine (1931)

The S-class submarines of the Royal Navy were originally designed and built during the modernisation of the submarine force in the early 1930s to meet the need for smaller boats to patrol the restricted waters of the North Sea and the Mediterranean Sea replacing the British H class submarines...

 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...

, and part of the Third Group built of that class. She was built by Scotts

Scotts Shipbuilding and Engineering Company

Scotts Shipbuilding and Engineering Company Limited, often referred to simply as Scotts, was a Scottish shipbuilding company based in Greenock on the River Clyde.- History :...

, of Greenock

Greenock

Greenock is a town and administrative centre in the Inverclyde council area in United Kingdom, and a former burgh within the historic county of Renfrewshire, located in the west central Lowlands of Scotland...

 and launched on March 26, 1943.

Wartime career

Sirdar spent most of the war in the Pacific Far East, where she sank two Japanese coasters, two sailing vessels, two unidentified vessels, and the Japanese guardboat Kaiyo Maru No.5. She also damaged another coaster with gunfire.

Postwar career

She survived the Second World War, and continued in service. Along with her sisters, HMS Scorcher

HMS Scorcher (P258)

HMS Scorcher was an S class submarine of the Royal Navy, and part of the Third Group built of that class. She was built by Cammell Laird and launched on December 18, 1944. So far she has been the only ship of the Royal Navy to bear the name Scorcher...

 and Scythian

HMS Scythian (P237)

HMS Scythian was an S class submarine of the Royal Navy, and part of the Third Group built of that class. She was built by Scotts, of Greenock and launched on April 14, 1944...

, Sirdar took part in the search for the missing HMS Affray

HMS Affray (P421)

HMS Affray , a British Amphion-class submarine was the last Royal Navy submarine to be lost at sea, on 16 April 1951, with the loss of 75 lives...

 in 1951. They all flew large white flags to distinguish them from the missing Affray. Sirdar later sat on the bottom for six hours while the ASDIC boats familiarised themselves with the identification of a submarine sitting on the bottom.

On 1 February 1953, Sirdar was swamped by floods while in dry dock at the naval dockyard at Sheerness, Kent, and later sank. She was refloated and returned to service.

Sirdar was eventually sold, and arrived at the yards of McLellen on May 31, 1965 for breaking up.