DICE revealed yesterday that sea combat is going to be integrated into Battlefield 4 as a central component, and that controlling the sea will be just as important as controlling the land and air. Developers explained the details of naval warfare in the new game during a question and answer session, discussing how jet-skis and attack boats like the American RCB-90 and Chinese DV15 Interceptor will add to the gameplay. Vehicles will have customizable loadouts for different gameplay styles. The attack boats will play a role similar to the tanks on land.

Read more here: http://battlefield4.net/sea-combat-to-play-central-role-in-battlefield-4/