Heavily armed with a range of weaponry to suit the naval force it serves, the Type 209 can dive to 250 meters or below. The depths a submarine can practically achieve, ultimately, comes down to ...

According to the Baltic Fleet’s press office, during the shipborne exercise, the crew of the diesel-electric submarine practiced tasks at various depths, diving to a maximum depth of 190 meters ...

The dive shattered the previous depth record for the Atlantic, which was held by the Chinese Jiaoling submarine. That sub has explored depths below 7,000 meters, and is still operational today.

His mission involved two submarines diving as a pair ... think about and you realise just how dangerous it all is, diving at that depth is a very dangerous pastime, the risks are very, very ...