and SPS-39A radars for air search and surveillance and SPQ-2 for navigation. They also carried SQS-39 sonar. The guns were automatically controlled by the Italian-designed NA-9 Orion fire control system guided by the SPG-70 radar. Ships History The class consisted of two vessels both commissioned in 1964 and in service into the late 1980s. A third, Enrico Dandolo (C555), was cancelled. Andrea Doria was modernised in 1976-78, exchanging the RIM-2 missiles for the SM-1ER surface-to-air missile. The ship received an updated electronics package, mounting SPS-40 2-D air search radar, SPG-55C fire control radar and SQS-23 sonar. Caio Duilio received only a marginal modernisation in 1979-80 and instead was modified to become a training ship. Its aft hangar was removed and replaced with classrooms and two of its 76mm mounts were removed aft. In 1980 it replaced San Giorgio as the fleet's training vessel. Both ships mounted new electronic warfare packages, SPS-768 long-range search radars and SPR-4 intercept and SLQ-D jammers. Similar ships Notes Sources Gardiner, Robert; Chumbley, Stephen & Budzbon, Przemysław (1995). Conway's All the World's Fighting Ships 1947-1995. Annapolis, Maryland: Naval Institute Press. . External links Marina Militare official website Andrea Doria Marina Militare website Cruiser classes Cruisers of the Italian Navy