The shape of the submarine has evolved a bit over time. Use the link below to look at a number of diagrams of submarines. There are thousands on the web, and this will connect you to a whole bunch of them.
Cigars.
The first submarine was the Turtle during the Revolutionary War. It was a sphere essentially.
this is the plant leaf diagram.
look like an octopus look like an octopus
a tree diagram is when you make a tree and your leaves have words on it
The first submarine looked like an egg pointing upwards. It had a window in front and had robotic arms to attach bombs to warships. It was named as "the Turtle".
Here you go!
one dimensional
dog
like to rings that are connected.
It looks like the diagram below./\
it looks like A CHRISTMAS tree