What is another word for pigboat?
Pronunciation: [pˈɪɡbə͡ʊt] (IPA) 
"Pigboat" is a slang term used to refer to a submarine, particularly one that is old and outdated. However, there are a variety of synonyms that can be used to describe a submarine. Some of these include "sub," "submersible," "underwater craft," "underwater vessel," "undersea boat," "submarine warship," and "undersea explorer." While these terms are more formal than "pigboat," they accurately describe the function and purpose of a submarine. Submarines have played an important role in naval warfare and exploration, and their unique ability to operate underwater has long captivated the public imagination.
