The world's first air-independent propulsion (AIP) system is being installed on a Spanish Navy S-80 Plus-class diesel-electric submarine in Cartagena. Being able to stay submerged underwater longer without going to the surface will allow the submarine to stay undetected.

The invention of nuclear submarines and aircraft carriers has significantly transformed naval warfare and maritime operations. Nuclear submarines were first developed in the 1950's, utilizing nuclear power to propel the vessel, which provided extended operational range and endurance compared to conventional diesel-electric submarines. This innovation allowed submarines to remain submerged for extended periods, offering enhanced stealth and strategic capabilities. This makes the only limit on how long a submarine can stay submerged food availability.

Technology has been advancing at a fast pace, a good example would be Starlink. Starlink is a multi satellite project created by Elon Musk and his own company "SpaceX".