A Boat That Docks Itself, and Knows When to Give the Helm Back

Docking is the moment many boat owners fear most. Wind on the beam, a tight berth, people watching from the pontoon. Brunswick, the group behind Simrad, Mercury and Boston Whaler, now sells a system that does it for you. It is called AutoCaptain, and it is fitted at the factory on the Boston Whaler 405 Conquest, a boat of about 40 feet.

What it does. Six stereo cameras in the hardtop, each with two lenses that judge distance the way two eyes do, see all around the boat. The system finds objects, plans a path, steers around obstacles and drives the engines through Mercury's joystick control. It can dock and undock, move slowly through a marina, and hold the boat still to within about a metre while the crew get the lines on. Brunswick puts it at "level two-plus" on the six-step scale used for self-driving cars. In plain words: the machine does the hard part, the person stays responsible.

The limits are the best part of the story. AutoCaptain is not trained on the collision rules, the COLREGs every skipper learns. It works only at low speed and short range. When it is not sure what to do, it stops and hands control back to the person at the helm. Before it starts, the skipper must confirm they will stay at the helm. If they take the joystick, the system steps aside. It needs a hardtop for the cameras and Mercury outboards, so it does not yet suit sterndrive boats or larger yachts, and it cannot be fitted to an existing boat.

What is missing. No price. No sales figures. No published test results. And nothing on the question every owner and insurer will ask: if the boat touches the pontoon while the system is in charge, who pays? Even the magazine that reviewed it worries about owners who will trust it too much.

Why this matters beyond leisure boats. This is the clearest example we have seen of a maritime system built around the handover. It does not pretend to be a captain. It is designed to stop. The risk now moves to the person: an owner who has not docked by hand in a year, being handed a boat in a crosswind one metre from a concrete wall.

For yacht managers and charter companies: if your boats get systems like this, keep the crew docking by hand on a regular basis. A takeover is only safe if the person taking over is still in practice. [Yachting Magazine · Forbes]

This story is part of the Maritime AI Digest of 18 October 2026.