It is about a major port-city called Vista Alegre, that giant Mayan canoes used to dock at. Here is a description of the canoes from the article:
I went looking for pictures of these canoes, and found an article called The Mesoamerican connection: the Putun Maya, master seafarers and merchants, which shows a canoe with a hut in the middle and what looks like the mast from a Viking longship to me. That speaks about slave-trading and goods trading and implies that the Putin Maya were a very important part of trading culture.Researchers Explore the Seafaring Culture of the Maya wrote:During the current expedition, the team especially hopes to uncover remains of Maya trading canoes, which Christopher Columbus’ son Ferdinand described in 1502 as fashioned from a single tree trunk and with a structure “not unlike those of Venetian gondolas.” These vessels could carry crews of 25 paddlers along with additional passengers and were piled high with cargo.
I also found another short article about Mayan seafarers that mentioned trade routes and trade goods.
I also found a thesis called Maritime Trade and Seafaring of the Precolumbian Maya by Rahilla Corinne Abbas Shatto, that has some interesting stuff in it.
I don't recall seeing anything about Matican seafarers, but I figure there should be some on both the East and West coasts of the Maztican area. And, if they have port-facilities for their own boats, perhaps the Eastern ports might get visited (or taken over) by Amnians and perhaps the Western ports might get visited by ships from the Kara-Tur area.
EDIT: Dead links replaced by Wayback Machine links.