Blockship
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A blockship is a ship deliberately sunk to prevent a river, channel, or canal from being used as a waterway. It may either be sunk by a navy defending the waterway to prevent the ingress of attacking
The wreck of SS Reginald, a blockship sunk in Weddell Bay in the Orkney Islands, Scotland in 1915
Cruiser Reina Mercedes, sunk by its own crew in the Spanish-American War, blocking access to the port of Santiago de Cuba.
HMS Hood (1891)
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HMS Hood was a modified Royal Sovereign-class pre-dreadnought battleship built for the Royal Navy in the early 1890s. She differed from the other ships of the class in that she had cylindrical gun tur
Blockship
…being used as a waterway. It may either be sunk by a navy defending the waterway to prevent the ingress of attacking enemy forces, as in the case of HMS Hood at Portland Harbour in 1914; or it may be brought by enemy raiders and used to prevent the waterway from being used by the defending forces, as in the…
Hood in the 1890s
The forward 13.5-inch (343-mm) gun turret on Hood
Hood in 1901
The outline of the wreck of Hood can be seen between the breakwaters of Portland Harbour.