Off the left of the image is the end of the Lancaster Canal's Glasson Branch. Off the right of the image is the sea port of Glasson Dock. It's easy to imagine the historical importance of the Basin as a transshipment point when Glasson was Lancaster's out-port, but now it's a marina accommodating up to 220 boats, with chandlers and repair facilities in the old warehouses and dry docks. I understand it's a popular stopping-off point for yachts traveling from the south coast of England to Scotland.