A dry dock (sometimes dry-dock or drydock) is a narrow basin or vessel that can be flooded to allow a load to be floated in, then drained to allow that load to come to rest on a dry platform. Dry docks are used for the construction, maintenance, and repair of ships, boats, and other watercraft.

Floating dry dock Jong Shyn No. 8 in Kaohsiung Harbour, Taiwan

Alternative dry dock systems

Apart from graving docks and floating dry docks, ships can also be dry docked and launched by: