The US Navy’s kosato-class submarine USS KOSATKA (SS-8) has two large, rotating wings that lift the submarine into the air and retract them after launching.
The USS KOSHATKA has a large, rotatable wing that is designed to drop the submarine out of the water when its engines stop working.
The KOSHETSU-class submersible was first built in the early 1950s and has been in service since 1973.
It has three wings, each with two rotating rotors.
A US Navy video shows the USS Koshata (SS, left) entering the water from the waterline in this image from the US Navy.
The USS Kosatki, the Russian-built USS KOPALOVSKY (SSR) and the Chinese-built YUANLAN submersibles are all capable of launching and docking from the sea floor.
In 2017, a Chinese-flagged YUANTANG-class maritime patrol vessel, YUATAN, entered the water in the Gulf of Mexico with a single submersable.
These subs can reach speeds of more than 8 knots and can carry up to six crew members.
The Japanese submersed in the 1960s is a more advanced version of the submarine, known as the YUGASHI, which was designed to be able to reach speeds up to 9 knots and carry six people.