Two of the more popular ship simulation games available online are "World of Warships" and "Ships." "World of Warships" is a free-to-play combat-based MMO, while "Ships" is browser based and offers the chance to practice sailing through real world environments by using Google Earth.
In "World of Warships," players take control of combat vessels ranging from the World War 1 era to shortly after the end of World War 2. Players join others to form teams and become the last team standing on the battlefield. "Ships" focuses on sailing modern non-combat ships, starting with smaller vessels and eventually progressing to larger ones.