https://www.gamespot.com/articles/battlefield-1-turning-tides-north-sea-update-now-a/1100-6456470/

EA is continuing to roll out new content for Battlefield 1. The second part of the game's Turning Tides DLC is now available on PC, PS4, and Xbox One, and it introduces new maps, uniforms, an additional vehicle, and more to the WWI shooter.

This portion of the expansion is called North Sea, and like previous DLC packs, its biggest addition comes in the form of new maps. North Sea introduces two, the first of which is Heligoland Bight. EA describes it as "Battlefield 1's quintessential naval map," and it features the "first ever Battlefield 1 Dreadnought vs. Dreadnought battle." The second map, Zeebrugge, takes place on the Belgian port of Bruges-Zeebrugge, and it has players fight alongside the British Royal Marines as they "wrestle to possess the German controlled, concrete mole."