The depot is a storage station. It has the largest hold of any station and a dock that takes ships up to a cruiser. The dock is its only facility, run by a single generator, so it has no production. Goods are stored there between one ship and the next, and like other stations it can be the pickup or drop point of a courier contract.
A Constructor builds it from concrete, panels and containers, all made from iron, silicate and carbon, the main resources of the home ring.