The Tradewinds Update will go live tonight, 4/29 at 7:00 PM PT. We will bring the old servers down around 5:30 PM PT. You will be able to download the patch at that time. Servers will be wiped and up again at 7:00 PM PT.
Please see previous post below for details and patch notes of the update:
https://steamcommunity.com/games/834910/announcements/detail/3079876260329612106
Thank you for your patience! Happy Sailing! :)