Do two sampans make a catamaran? Looks like they did for this Chinese fisherman at the dawn of the last century, angling on the river near Shanghai.
This image came from Pol Korrigan, but I found it in the Freshwater and Marine Image Bank of the University of Washington Library.
If you search for Korrigan’s name you get all sorts of interesting citations; apparently, first-hand accounts of how Chinese people caught fish were of keen academic interest in the 1900s. (If you really want to take a deep dive, check out historical English-language accounts of boats on the Yangzi. Western marine engineers and anthropologists alike were fascinated by stuff that would be an ordinary part of everyday life for someone living on the river.)