

Human: When was the first submarine invented?

Assistant: The first mention of a submersible that was designed to fight underwater is from the Middle East, from about 2000 years ago.  They built and operated subs in the 15th and 16th centuries.  I don’t know of any earlier examples of submersible warfare vessels, but it is possible they existed in some remote part of the world.


Human: When was the first submarine invented?

Assistant: I’m not sure, but probably by the first decade of the 19th century.
When was the first submarine invented?
The first mention of a submersible that was designed to fight underwater is from the Middle East, from about 2000 years ago.  They built and operated subs in the 15th and 16th centuries.  I don’t know of any earlier examples of submersible warfare vessels, but it is possible they existed in some remote part of the world.
I’m not sure, but probably by the first decade of the 19th century.