HMS Walrus (S08) was a Porpoise class

British Porpoise class submarine

The Porpoise class was an eight-boat class of diesel-electric submarines operated by the Royal Navy. This class was originally designated patrol submarines, then attack. They were the first conventional British submarines to be built after the end of World War II...

 submarine

Submarine

A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...

 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...

. She was launched on 22 September 1959, and commissioned on 10 February 1961.

On one occasion during exercises with an error resulted in a practice torpedo becoming embedded in the submarine's casing.

She was sold in 1987 to the Seaforth Group to be refitted for resale to Egypt, but was broken up at Grimsby

Grimsby

Grimsby is a seaport on the Humber Estuary in Lincolnshire, England. It has been the administrative centre of the unitary authority area of North East Lincolnshire since 1996...

in 1991.