HMS Vigilant (S30)

As one of the four submarines which make up the UK’s nuclear deterrent, HMS Vigilant is far from a high-profile vessel – her top-secret duties mean she must ‘disappear’ on patrol for weeks on end.

HMS Vigilant (S30) is currently on deployment

Continuous at Sea Deterrent

Global

Get help understanding deployment

This unit is currently on deployment, find out how that might affect you.

Get Help

Unit official communications

For the latest updates about this unit visit the Royal Navy forum.

About this forum

Facts & figures

Facts & figures

150 metres

Total length

25+ knots

Top speed

16,000 tonnes

Total displacement

Our base

Our base

Faslane

Get Directions

HMS Vigilant's role

HMS Vigilant is the third of the Royal Navy’s Vanguard-class nuclear powered ballistic missile submarines. Together with her sister vessels, she carries the UK’s strategic nuclear deterrent.

The deterrent patrol cycle carried out by the Vanguard-class began in 1969 – and has continued unbroken to this day.

Following a mid-life Long Overhaul Period Refuel, HMS Vigilant now has an upgraded reactor core, meaning that she has enough fuel to power her through the reminder of her working life. The overhaul also included significant upgrades to all her major machinery and operating systems.

Unit history

Royal Navy careers

Never miss an update...

Want all the latest news from HMS Vigilant? Add this page to your favourites.

favourites

Follow the Royal Navy on Twitter

RT @HMNBPortsmouth: From Portsmouth ➡️ UK Waters ➡️ Norway ➡️ Scotland ➡️ The North Sea ➡️ Norway ➡️ Home for Christmas 🎄😄 10,100 nautical…