dry dock 
noun
A dock which can be drained of water to allow the inspection and repair of a ship’s hull: the company invested £40,000 in modernizing their dry dock [mass noun]: the vessel will go into dry dock until late February...
- By the autumn of 1996 there was sufficient funding to allow the ship to be moved into the adjacent dry dock at Hartlepool Historic Quay to begin the crucial work on the below-the-waterline hull structure.
- The whole of the Latimer's Landing area had been reserved for ship repairs and a dry dock, a business activity which Portnet believed would grow.
- Options include towing the ship to a dry dock, having it repaired, then towing it back to its berth at the park.
verb
(dry-dock) [with object] Place (a ship) in a dry dock: (as noun dry-docking) the vessel underwent its first dry-docking in six years...
- Another two ships were dry-docked at the end of slipways while a few cold-looking workers labored at scraping down the hulls.
- Unless action is taken within the next five years and unless the ship is dry-docked within the next 10 years, it will be effectively gone.
- She had heard that Nelson had dry-docked his beloved boat for nearly a year while she underwent a complete refit and update.