Calimport is the sprawling capital city of the country of Calimshan. It is on both the water and the desert, so it can be reached either way. Memnon and Manshaka are close trading partners; Manshaka by sea and Memnon by caravan. Sometimes the local traders make runs that go as far as Luskan.
Sultan Vezhera is the nominal leader of the city, but the Crime Guilds run the streets. It is all well organized so an outsider wouldn’t know the difference.