Waterworld (1995) movie and novel tie-in

On a future Earth the polar icecaps have melted and civilization has vanished, with most land being submerged. Pockets of people exist on relics of floating vessels and whatever parts of land are above the waves. In the 1995 post-apocalyptic movie Waterworld and the novel tie-in by Max Allan Collins, Kevin Costner stars as a drifter in a trimaran who aids a woman and a young girl who are trying to find a mythical place called Dryland.