Ohtwan, appointed P7T-117 by the Tau'ri, is a planet in the Milky Way galaxy has a Stargate. Ohtwan is a small world with very little land mass. Most of the surface is covered by water, and the solid core is fairly small, which leads to wide deep oceans. The world is in a very stable orbit, thus producing a lack of geological changes and a very predictable seasonal pattern. The waters of the planet are rich in plant and animal life, and have great swamps and Sargasso seas. Most of the populace takes on sea-farming for sustenance. The planet's Stargate is located on a remote island, one of the few landmasses of the planet. The closest village to the Stargate is Nun'ka. (RPG: "Stargate SG-1: Living Gods: Stargate System Lords")