Graving docks, also known as dry docks, are structures that are used to carry out maintenance, repair, and construction work on ships and boats. These docks come in different shapes and sizes; they can be found in naval yards, shipbuilding facilities or ports. Synonyms for graving docks include boatyards, marine docks, slipways, shiplifts, shipways, and dockyards. Boatyards is a term used to refer to facilities dedicated to the fabrication, repair and storage of all types of watercraft. Marine docks are constructed to provide a facility for mooring boats or ships and for loading and unloading goods. Shiplifts are facilities that enable the lifting of ships or boats out of the water and the transfer to a dry dock. All these synonyms have one thing in common- they provide facilities and services that help to ensure that ships, boats and other watercraft are in good working condition.