In the near future I'll be taking part in the campaign of Waterdeep: Dragon heist. I'm currently working on my character for it, which will most likely be a human Tempest Cleric with the Sailor background. The problem I face is deciding which deity grants the cleric their abilities.
To my understanding, Waterdeep is a big city that's highly dependent on its sea trade. I'd therefore expect there to be a God(dess) of the Sea with quite a large following around town, but I can't find one. The only two gods of the Sea I can find, are Umberlee (see this question) and Deep Sashelas. The former is Chaotic Evil and hated throughout the world, while the latter is an elven god. Neither of those seems a logical choice.
Am I missing a more major God of the Sea in this world? Which god would seafarers and those dependent on their work worship in Waterdeep?
Edit: This question provides a good overview of non-evil gods with the Tempest domain. Even though my question came up during creation of a Tempest Cleric and I appreciate the focus on that part, answers don't need to restrict to the domain; I'm also interested in gods without it. Not just out of curiosity, but also to get a rough idea about the theological context this cleric will be operating in.