thumb|A flatboat passing a long cigar-shaped keelboat on the [[Ohio River.]]
thumb|A flatboat passing a long cigar-shaped keelboat on the [[Ohio River.]]
A flatboat (or broadboat) was a rectangular flat-bottomed boat with square ends used to transport freight and passengers on inland waterways in the United States. The flatboat could be any size, but essentially it was a large, sturdy tub with a hull.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).