High Quality Content by WIKIPEDIA articles! The Courageous class comprised three battlecruisers known as "large light cruisers" built for the Royal Navy during World War I. Nominally designed to support Admiral of the Fleet Lord John Fisher`s Baltic Project, which was intended to land troops on the German Baltic Coast, ships of this class were fast but very lightly armoured with only a few heavy guns. They were given a shallow draught, in part to allow them to operate in the shallow waters of the Baltic but also reflecting experience gained earlier in the war. To maximize their speed the Courageous-class battlecruisers were the first capital ships of the Royal Navy to use geared steam turbines and small-tube boilers.