A group of divers have explored the wreckage of a WW1-era Royal Navy submarine – 100 years after it sank. Dominic Robinson, 54, and a team of 10 dived 74m down to check out the century-old HMS M1 sub ...

Trump did not say whether he is positioning conventional or nuclear strike-capable submarines in response to the Russians’ rhetorical aggression.

The navy's few primitive ocean-going submarines and an entirely new type of small warship, aptly named the subchaser, helped secure an eventual victory over the U-boat.