Able Seaman Smith and Able Seaman Davies in their Bunkspace on HMS Vigilant, submarine on January 20, 2016 in Rhu, Scotland. HMS Vigilant is one of the UK's fleet of four Vanguard class nuclear-powered ballistic missile submarines carrying the Trident nuclear missile system. A decision on when to hold a key Westminster vote on renewing Trident submarine class is yet to be decided senior Whitehall sources have admitted.
Having designated areas for maintaining their fitness and equipping rooms with video games, life on the submarine doesn't necessarily mean that you'll be miserable, several hundred meters below the sea.
Here are several photos that depict the life of a sailor inside a modern-day submarine: