HMS Trenchant (S91)

This Trafalgar-class nuclear-powered submarine was launched by war hero Vice Admiral Sir Arthur Hezlet – commander of the original HMS Trenchant submarine during the Second World War.

Facts & figures

Facts & figures

5,300 tonnes

Total displacement

85 metres

Total length

30+ knots

Top speed

Our base

Our base


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HMS Trenchant's role

HMS Trenchant is a Trafalgar-class nuclear-powered submarine. Together with the Astute class, the three Trafalgar-class submarines make up the Royal Navy’s hunter-killer submarine force. Trenchant is equipped with the ferocious Tomahawk cruise missile, which can destroy a target from up to 1,000 miles away.

All Royal Navy submarines are nuclear-powered, giving them virtually unlimited range and the ability to stay submerged for as long as the crew's food supply holds out.

Unit history

Royal Navy careers

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