12 Facts About HMNB Portsmouth


The project was intended to secure the base's future for the next forty years and would revitalise shipbuilding in the city; but, due to budget cuts in 2013 shipbuilding in HMNB Portsmouth was closed in favour of BAE keeping its yards in Glasgow open.

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In 1836 the Commander-in-Chief, HMNB Portsmouth was given accommodation within the Dockyard and in 1889 he was given HMS Victory to be his ceremonial flagship.

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Edward II ordered all ports on the south coast to assemble their largest vessels at HMNB Portsmouth to carry soldiers and horses to the Duchy of Aquitaine in 1324 to strengthen defences.

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Appointment of one Thomas Jermyn as Keeper of the Dock at HMNB Portsmouth is recorded in 1526, with a Clerk of the Stores being appointed from 1542.

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Naval shipbuilding at HMNB Portsmouth recommenced under the English Commonwealth, the first ship being the eponymous Fourth-rate frigate HMNB Portsmouth launched in 1650.

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HMNB Portsmouth went on to use the same principle in constructing the new dry docks attached to the basin; it soon became standard for dock construction around the world.

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HMNB Portsmouth designed a "ship caisson" to close off the entrance to the basin.

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HMNB Portsmouth's plan was that the engine should be used not only to drain the reservoir but to drive a sawmill and woodworking machinery ; he envisaged linking it to a freshwater well, to enable water to be pumped through a network of pipes to various parts of the dockyard.

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From 1815 the system of Dockyard apprenticeship was supplemented by the establishment of a School of Naval Architecture in HMNB Portsmouth, initially housed in the building which faces Admiralty House on South Terrace.

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The majority of warships launched at HMNB Portsmouth following the end of the War were cruisers—Effingham in 1921, Suffolk in 1926, London in 1927, Dorsetshire in 1929, Neptune in 1933, and Amphion and Aurora in 1934.

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HMNB Portsmouth's immediate subordinate was an officer known as the captain of the dockyard.

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Fortifications of HMNB Portsmouth were developed over several centuries to protect the fleet and dockyard from attacks either by land or by sea.

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