Unusual magnetic properties of the planet Terra Nova allow for large ships able to hover a few feet off the ground known as Landships. They form the equivalent of a "wet navy" that other planets with surface water would have. A minimum size is necessary to take advantage of this unexplained property, so all Landships are the size of ocean going vessels such as frigates, destroyers, battleships, and aircraft carriers. Because of their cost, they are uncommon.