AN Oberon-class submarine became the first of its kind fitted with new sonar.
Barrow-built HMS Osiris, launched in 1962, was an update on the older design of the Porpoise class submarines.
The vessel was laid down in January 1962, launched in November of the same year, and commissioned in January 1964.
Changes were made to strengthen the hull, allowing HMS Osiris to dive longer and deeper than older classes.
Weighing 1,600 tons, the huge boat was powered by two 6,000 horsepower electric motors.
In 1969 the submarine returned to Barrow, its officers being hosted by the mayor of Barrow, JL Jackson.
During her time docked in Barrow, HMS Osiris saw more than 500 people come to visit her.
In 1970, Osiris earned the record for the deepest submarine escape after they took part in an escape exercise off the coast of Malta.
In 1977 Osiris took part in the Fleet Review off Spithead, held in honour of The Queen's Silver Jubilee.
In the 1980s she served during the Falklands conflict as a mine layer.
The sub returned to the South Atlantic in 1984 where she embarked on the longest patrol of her career.
In 1988, the submarine was updated with the latest in sonar equipment to the front of the hull.
The refit, which took place in Devonport, Plymouth, was the first of its kind to be carried out commercially in a Royal dockyard.
However, just one year later, Osiris was decommissioned to be sold to the Royal Canadian Navy for spare parts.
The vessel was taken to the Cammell Laird shipyard, in Liverpool where work began to strip her out.
In 1991, Osiris was moved to Garston, on the Mersey and after more than 20 years at sea, Osiris was finally scrapped in 1992.
Read more about Barrow-built subs:
The jinxed sub sold after four years of service
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