Cramped and heavily armed — see what life is like aboard a nuclear submarine with these photos

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It still might be more cramped than an apartment in New York, but navies across the world have developed their submarines with both upgraded safety measures and creature comforts for the modern-day sailor.

Life on a submarine, which now sometimes has designated areas for maintaining fitness and even for playing video games, doesn't necessarily mean you'll be miserable several hundred meters below the sea.

Here are several photos that depict the life of a sailor inside a modern submarine:

The Royal navy Vanguard-class submarine HMS Vigilant returning home after an extended deployment. The Vigilant is one of four UK Vanguard-class nuclear-powered ballistic-missile submarines carrying the Trident nuclear missile system.

Royal navy security personnel stood guard on the Vigilant at Her Majesty's Naval Base, Clyde on January 20 in Rhu, Scotland.

Royal navy personnel executing their duties inside the control room on the Vigilant.