I'm creating a world for a Dungeons and Dragons campaign, and it takes place on an endless plane of water. A single continent, maybe the size of Africa, sticks out in this endless sea. The sea always tends to flow from west to east, as does the wind, and in the north-south direction are regular bands of hot and cold temperatures. All of these constants are maintained by some sort of divine means, so long-term change is not a concern.
Given that the ocean is endless, how would storms be affected? Would there be massive storms that rival the size of continents because there's no land to stop them from absorbing moisture? How would navigation be affected by the prospect of constant wind direction; would it encourage the development of powered boats a lot sooner than they were on Earth?