Chronicles of Time
The Sea is the inner body of water within the Ring World. The Sea is drinkable, it has a slightly higher salt content then normal water, but not enough to dehydrate a sailor. The Sea is well sailed, though the waters are more turbulent the closer one approaches the Island of Ascension. Many ships that have gotten too close have been ripped asunder by the waves. Hence most ships keep a safe distance and avoid the Heart of the Sea where the island lies. Most sailors avoid The Dragon Isle.
The Sea is still unsafe, there are also dangers in the forms of sea creatures, however, very few are of the grand leviathan-like creatures that are found in the Ocean.