The majority of WWI submarines no longer exist, as many were sunk or sold for scrap. This isn't an unusual practice for the world's navies, but some boats remain and can be visited in museums.

While the U 19 submarines had plenty of success, they weren't the only type Germany sailed during the conflict. Germany built 329 U-boats of different types, which Imperial Germany and its allies ...

How many nuclear submarines does the UK have – and are they ready for war? Britain currently has a fleet of nine submarines, including four Vanguard vessels armed with the Trident nuclear system ...

Britain will build new attack submarines, invest billions on nuclear warheads and move towards “war-fighting readiness,” Prime Minister Keir Starmer said Monday, as he braces for a landmark ...

Britain will build new attack submarines, invest billions on nuclear warheads and move towards “war-fighting readiness,” Prime Minister Keir Starmer said Monday, as he braces for a landmark ...

Britain is set to build up to 12 new nuclear-powered attack submarines in response to rapidly increasing global threats, Sir Keir Starmer will announce as he unveils his long-awaited defence review.

Keir Starmer will today announce major plans to almost double the UK’s nuclear-powered submarine fleet. The Prime Minister will set out the building of 12 new attack submarines as part of the ...

Britain will build new attack submarines, invest billions on nuclear warheads and move toward "war-fighting readiness," Prime Minister Keir Starmer said, shortly before the publication of a ...

Prime Minister Keir Starmer of Britain vowed Monday to bring his country to “war-fighting readiness,” announcing plans to build up to 12 new attack submarines and invest billions of pounds in ...

In 1917 Britain and her allies were losing hundreds of ships every month to German U-boats. These deadly submarines patrolled the waters of the United Kingdom watching for ships to destroy. Their ...

The vessels themselves were much more cramped than submarines today — the F-1 was only 143-feet long. The crew of the USS F-1 during its service. U.S. Navy photo.