Guns that saw action at the Battle of Jutland are being loaned for an exhibition at the National Museum of the Royal Navy next year.
The large deck gun from the German destroyer B98, and a smaller deck gun from HMS Opal, are usually on display in the Orkney Islands but will be in Portsmouth as part of the Battle of Jutland exhibition next May.
The museum will carry out extensive conservation work on the guns.
Jutland brought together the two most powerful naval fleets of the time in the pivotal maritime engagement of the First World War.
Victoria Ingles, senior heritage project officer from the National Museum of the Royal Navy, said: ‘We can’t wait to take delivery of this gun from the German vessel B98. It will set the scene brilliantly outside the exhibition at Portsmouth Historic Dockyard.
‘When our visitors walk through the gate they will be confronted by it and in no doubt how intense it was to be under fire from it.
‘The Battle of Jutland was all about the big guns and the clash between the two naval forces which saw them unleash their awesome power.
‘This gun, and the smaller one we will have from HMS Opal, will be a fitting reminder of the huge human loss each side experienced as a result of the battle.’