The Harbor Chorus rose from emergency mutual aid and became a semi-sovereign power within a decade. Its first triumph was the Winter Convoys, when it organized guarded supply lines through fog and ice to prevent famine in Old Harwick. Its first setback came in the Reedwater Stampede, when a forged docking order caused a crush of barges, a fire, and nearly a hundred deaths. That disaster forced the faction to build stricter verification rituals and gave the reformers a permanent argument that corruption would eventually kill the port. The watershed moment was the Saltnight Breaker. During a storm driven by a tide anomaly, a customs fire spread through the old port authority house, destroying records and exposing how much of the city's trade had been controlled by blackmail and ghost accounts. The Chorus stepped into the vacuum, secured the surviving docks, and inherited both legitimacy and rot. Over the next fifty years, they expanded into arbitration, private security, and intelligence work. As trade grew, so did the temptation to use their influence for personal profit. Today the Chorus is indispensable to Old Harwick, but many believe it has become too large, too secretive, and too dependent on the very corruption it was founded to end.

Their visible headquarters is the Tide Ledger House, a long stone counting hall built on pilings above the quay with dry archive chambers, signal towers, and a public arbitration room. Beneath it lies a maze of bricked-up storage vaults, old flood tunnels, and ledger rooms that connect to older passageways leading toward the Portmaster's Vault and, farther down, the Harbor Undervault.