Frigate (Civ3)/Civilopedia

The frigate was a fast and powerful warship that evolved to fill several important roles, but one of its
primary roles was to raid enemy shipping. These three masted ships were lighter and faster than the European great 
ship or man-of-war, and usually carried 36 or fewer guns. The frigate was powerful enough to overcome most 
of its prospective opponents and fast enough to escape those it could not outgun. Because of their speed and 
strength, frigates were often employed as escorts for merchant vessels during times of war. The frigate 
remained the most useful and dominant naval vessel until the development of the ironclad.