The USS Connecticut is like a big boat that's part of the United States Navy. It's called a submarine because it goes under the water instead of on top of it like regular boats.
A submarine is a really special type of vessel that can do cool things like hiding from enemies and spying on other countries. It has a very strong metal shell to protect the people inside from the pressure of the water, which can be much stronger than the air pressure on land.
The USS Connecticut can hold a lot of people, but they all have to be careful because when they are inside, they breathe air from tanks instead of the regular air outside. This is important because they need to stay underwater for long periods of time without coming up for air.
There are many special things on board the USS Connecticut that help it go through the water and do its job. It has big engines and propellers to move it forward, and lots of high-tech equipment to help the crew see and hear what's going on around them.
The USS Connecticut is a very important boat for the United States Navy because it helps keep our country safe. Even though it's hidden underwater and no one can see it, it's always ready to protect our country if it needs to.