Okay, so imagine you are playing with toy boats in a big bathtub. Now imagine one of the boats is super cool and hidden under the water. That is kind of like what the Royal Navy Submarine Museum is! It's a place where people can go to learn about these super cool boats called submarines that go under the water.
Inside the museum, there are lots of things to see and do. First, there are real submarines that you can go inside and explore. These submarines used to be used by the Royal Navy to help keep people safe. Now they are in the museum so people can learn about them and what it was like to be in one.
There are also lots of displays and models that show how submarines work. Submarines are really different from regular boats because they can go under the water and stay there for a long time. This means they need special ways to breathe and move around. The museum shows you all of this in a fun and easy way to understand.
Plus, there are fun things to do like dress up like a sailor and play games. You can even learn about famous submarines that have been in movies or TV shows. It's a really great place to visit to learn about history and science all in one fun place!