And though it was designed principally not as a sub but to add extra fun to diving into your own personal sea that you have had made from poor childrens' tears, it will stay down there for up to ...

This led to the introduction of Swimmer Delivery Vehicles (SDVs), powered mini submarines able to deploy from a mother sub underwater and carry frogmen to their objective. In 1968 the submarine ...

But as the day progressed, he settled on the idea of a mini-submarine. "Primary path is basically a tiny, kid-size submarine using the liquid oxygen transfer tube of Falcon rocket as hull," Musk ...

But Russian media reported the ship was a top-secret nuclear-powered mini-submarine. Putin's spokesman Dmitry Peskov explained the secrecy surrounding the tragedy by saying the information was a ...