Ironclads are not the same thing as submarines. Ironclads do not go underwater completely even though the majority of their body may be underwater.
USA. nuclear powered submarines can go faster than 25 knots (nautical miles per hour) underwater.
Submarines todaee are used for underwater exploration,funn,new life underwater.
Submarines?
Submarines are built with a special design that allows them to be faster underwater. Submarines can be used during a war as a way to sneak up to enemy lines in the water, but still stay hidden.
Submarines have sonars.
Yes, submarines can operate on the surface of the water. While they are primarily designed for underwater navigation, they can surface to recharge batteries, conduct operations, or allow crew members to breathe fresh air. When on the surface, submarines resemble conventional ships but retain the capability to dive and operate underwater as needed.
They are called submarines
Submarines can stay underwater for extended periods, often ranging from several days to weeks, depending on their type and technology. Nuclear-powered submarines can remain submerged for months at a time, limited primarily by food supplies and crew endurance. Conventional diesel-electric submarines typically have shorter underwater endurance, often around a week, due to the need to surface for air or recharge batteries. Advances in technology continue to enhance the underwater capabilities of submarines.
Straight to the bottom of the ocean.
Naval submarines do not dive deep enough to go near underwater mountains. This is contrary to what you may have seen in the movies. They use sounding charts to determine the depth of the water in which they are navigating. They avoid such underwater objects. Research submarines use cameras and sonar, as well as charts, to guide them.
Sonar