Shown here in July 1916 is the Monitor HMS Erebus having her 381 mm (15 in) turret erected under the 200-ton hammerhead crane at John Brown's shipyard, with the battlecruiser HMS Repulse, destroyers HMS Romola (alongside forward) and HMS Peregrine (aft), and the 'E' class submarine E35 in the foreground. Taken from Big Gun Monitors.