This is the full text of Kakao Games Europe's 12/1/2017 press release.

Black Desert Online’s upcoming naval-focused expansion, Margoria, is set to arrive Wednesday, January 25. In addition to adding new treasure-filled sea areas  and a new harbor that connects to a new territory. Furthermore, the Margoria Expansion will introduce underwater monster hunting, ship construction, over 100 new quests, guild-versus-guild naval combat the best way to establish dominance on the new trade routes and more.

The Margoria Expansion will be made available to existing Black Desert Online players for free. View the new screenshots below before braving the deep, dangerous waters later this month.
 
An update to Black Desert Online’s ocean systems was released in October to prepare for the new features coming with the Margoria Expansion. If you missed it, watch the Ocean Update video to see the improved underwater world in motion.
 
Get a free 7-day trial for Black Desert Online here and dive in.