Three of the ships, HMS
General Wolfe,
Lord Clive and
Prince Eugene, were to be converted to take the
BL 18-inch guns that had originally been allocated to . The guns were mounted aft, permanently arranged to fire over the starboard beam. The mounting consisted of two massive side girders parallel to the
barrel, between which the gun was slung. At the forward end was a support about which the gun could train in a limited arc, with a hydraulic cylinder providing ten degrees of traverse each side of the mounting center line. The gun was loaded at the fixed angle of 10 degrees, but firing was only allowed between 22 degrees and 45 degrees of elevation, to distribute the large firing forces evenly between the forward and after supports. The mounting was covered by a large non-traversing half-inch steel plate shield fixed to the deck. The enormous rounds and charges were transported to the gunhouse on a light railway fixed to the main deck. Work was completed on
Lord Clive and
General Wolfe but the end of
World War I intervened before
Prince Eugene was finished. Both of the converted ships saw action. The original 12-inch turret was left in place on them to maintain stability.
General Wolfe fired on a railway bridge at
Snaeskerke, four miles (6 km) south of
Ostend,
Belgium, on 28 September 1918. The range of 36,000 yards (33 km) made this the greatest range at which a Royal Navy vessel has ever engaged an enemy target using guns.
Lord Clive fired a mere four rounds with the replacement gun at enemy targets. The guns used were as follows: • The gun from the rear turret of
Furious was to have been fitted to
Prince Eugene; • The gun intended for the forward turret of
Furious was fitted to
General Wolfe; • The gun fitted to
Lord Clive was a spare. ==Citations==