The Marbeline Coast

From publisher blurb:

The Marbeline Coast extends from the Cape of New Hope, along the slopes of the Maedrumaust Mountains, all the way to the City of Sherril in the Kingdom of Maine. Named for the trade in marble that comes from Brindisium and spreads to the wide world, it remains a largely wild region for no kingdom patrols its waters, deep or shallow and neither Maine nor Kayomar have navies of any size to patrol it. It is a haunt for pirates and monsters of the deep who thrive in the scores of islands, inlets, bays, and water ways that make up one of the most dangerous coastal regions in the lands of Ursal.