We delivered an AI dockmaster for a family-run Charleston marina — one that assigns slips against draft, beam, and tide instead of a laminated map and a memory, runs the transient reservation book through no-shows and weather holds, sequences the fuel dock on summer Saturdays, and keeps the hurricane haul-out list sequenced and current before the first advisory ever posts

The marina has been in the family for two generations, and the dockmaster's office still runs the way it did in the nineties: a laminated slip map, a reservation book, and one man's memory of which sailboat draws six feet and which trawler's owner will not tolerate a neighbor with a loud generator. The memory is excellent. The problem is everything the memory has to hold at once. Transient traffic on the Intracoastal books by phone, email, and two apps that do not talk to each other — and a forty-eight-foot catamaran arriving at low tide cannot go where the book says it can. Summer Saturdays turn the fuel dock into a shoving match of sportfishers burning daylight. And underneath the season runs the quiet, non-negotiable list every Charleston marina keeps: who hauls out, in what order, at what forecast trigger, when a storm gets a name. He was managing all of it in his head, which worked right up until the days it mattered most. We built him an AI dockmaster that holds the whole puzzle at once. It knows every slip's depth at low water, every regular's draft, beam, and quirks, and every transient request across all four channels — so when the catamaran calls, it proposes the assignment that actually works, including the shuffle of two smaller boats it takes to make the fairway clear at that tide. It runs the reservation book like a revenue manager: confirming, deposit-holding, and backfilling the no-shows that used to leave prime slips empty on a July weekend — transient occupancy up eighteen percent in the first two months. It sequences the fuel dock by boat size and turnaround so the radio stops being an argument. And the haul-out list is no longer a legal pad: every boat ranked by exposure, owner contact drills current, trigger conditions tied to the actual forecast, so the plan that used to take two frantic days now stands ready in June. His father ran the docks on memory. He runs them on the same judgment — with a system underneath it that never forgets a draft, a deadline, or a deposit. "The boats didn't change," he told us. "The chaos did."