Curiosity about the port of Ushuaia not listing Seabourn Antarctica cruises

[Woodrowst]

I use a number of sites to check port arrivals and none of them list any Seabourn Antarctica trips departing from Ushuaia.  The port itself does not seem to have a website.  Any ideas as to why Seabourn trips are missing from Ushuaia departure lists?  Our cruise is departing in January and it seems strange to not see it listed.