Sresh-Dar

The Keepers of the Deep's free port on the Longwater strait floor, reached by dive, pressure-harbor, and the Azure zeppelin line — the Hessk undersea capital, guarded jealously against every crown that's tried to license its salvage-rights.

Sresh-Dar sits where the Longwater strait floor drops into real pressure, and the Keepers of the Deep hold it against every crown that has ever tried to license its salvage-rights — including, pointedly, Highbridge's own Trade-Moot. The Drowned Fangs raid its harbor approaches from the same cold water the city depends on.