Unloading site is a term used to describe a place where goods are unloaded from ships or other vessels. The two most common terms used to describe such a place are QUAY and PIER, both of which have four letters. A QUAY is a structure built along the shoreline of a harbor, river, or other body of water, and is used for loading and unloading ships. A PIER is a raised platform that extends out into the water, and is also used for loading and unloading ships.