There is also a "Permathread: Online Events - current listings" at Mudcat. I started this Chantey thread at the time when TicToc chanteying and Soon may the Wellerman come was a big news topic. A Mudcat editor added the words "& folk events" to the title, but given that we have another ongoing thread for online events listings; I think it would be better to use this one specifically for sea song listings. As you notice, I've just broadened that a little bit beyond chanteys/shanteys!