The Oberon
Class of submarines built for the Royal
Navy between 1959 and 1964 were a class of 13
Diesel Electric Boats, the first of class Oberon,
Pennant No. S09, being built at HM Dockyard Chatham
in 1959. They were capable of high underwater
speeds, had improved detection equipment over
the Porpoise Class and were able
to maintain continuous submerged patrols in any
part of the world, armed with homing torpedoes.
Before
and abaft the bridge, glass reinforced plastic
was used for the superstructure for the
first time. The Oberon Class
were acknowledged as the quietest submarines
of their day and are considered the classic
submarine of their era.
HMS Onyx S21 was constructed at Cammel Laird shipbuilders in Birkenhead. She was originally ordered by the Royal Canadian Navy and was launched in August 1966. Onyx was comissioned into service with the Royal Navy in 1967.
HMS Onyx was the only non-nuclear powered submarine to take part in the Falklands War, where she was used in shallow water to land troops.
In 1991 Onyx was decommissioned from the Navy, she was then on public display in Birkenhead as part of the Warship Preservation Trust.