- See also: Inner Sea region
The North Tack is one of the two major sea trade routes through the Inner Sea, the other being the South Tack. It is one of the oldest and most-profitable of the region's maritime trade routes. It runs along the Inner Sea's northern coast, beginning at the town of Sedeq in southern Qadira, and ends in Corentyn in southwestern Cheliax. Along the way, it closely follows the coastline of Avistan, except for north of Katheer, where it tacks due west for Absalom.