A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several operational roles from search-and-destroy to ocean escort to sea denial.
The D2G reactor was a naval reactor used by the United States Navy from 1962 to provide propulsion and electricity generation on warships. Ships powered by the reactor were decommissioned at around the end of the 20th century. The D2G designation stands for:
USS Virginia (CGN-38) was a nuclear-powered guided missile cruiser, the lead ship of her class, and the eighth ship of the United States Navy to be named for the Commonwealth of Virginia. She was commissioned in 1976 and decommissioned in 1994.
The Aegis Combat System is an American integrated naval weapons system, which uses computers and radars to track and guide weapons to destroy enemy targets. It was developed by the Missile and Surface Radar Division of RCA, and it is now produced by Lockheed Martin.
USS Long Beach (CLGN-160/CGN-160/CGN-9) was a nuclear-powered guided missile cruiser in the United States Navy and the world's first nuclear-powered surface combatant. She was the third Navy ship named after the city of Long Beach, California.
USS Mississippi (CGN-40), a Virginia-class nuclear-powered guided-missile cruiser, was the fourth ship of the United States Navy named in honor of the 20th state admitted to the Union. Her keel was laid down by the Newport News Shipbuilding and Drydock Company at Newport News, Virginia, on 22 February 1975. She was launched on 31 July 1976. The ship was commissioned on 5 August 1978 by Jimmy Carter, then serving as the 39th president of the United States. Early deployment included escorting the carrier USS Nimitz (CVN-68). She also was deployed in 1989 as a response to the capture and subsequent murder of U.S. Marine Corps Colonel William R. Higgins by terrorists.
USS Ticonderoga (DDG/CG-47), nicknamed "Tico", was a guided missile cruiser built for the United States Navy. She was the lead ship of the Ticonderoga class and the first U.S. Navy combatant to incorporate the Aegis combat system. Originally ordered as a guided-missile destroyer, she was redesignated as a cruiser after capabilities from the cancelled Strike cruiser program were implemented into the ship's design. The new AEGIS system allowed Ticonderoga to track and engage many aerial targets more effectively than any previous U.S. Navy warship.
USS Bainbridge (DLGN-25/CGN-25) was a nuclear-powered guided missile cruiser in the United States Navy, the only ship of her class. Named in honor of Commodore William Bainbridge, she was the fourth US Navy ship to bear the name. With her original hull classification symbol of DLGN, she was the first nuclear-powered destroyer-type ship in the US Navy, and shared her name with the lead ship of the first US Navy destroyer class, the Bainbridge-class destroyers.
The Spruance-class destroyer was developed by the United States to replace the many World War II–built Allen M. Sumner- and Gearing-class destroyers, and was the primary destroyer built for the United States Navy during the 1970s and 1980s. It was named in honor of U.S. Navy Admiral Raymond A. Spruance, who successfully led major naval battles in the Asiatic-Pacific Theater during World War II such as the Battle of Midway and the Battle of the Philippine Sea.
The Ticonderoga class of guided-missile cruisers is a class of warships of the United States Navy, first ordered and authorized in the 1978 fiscal year. It was originally planned as a class of destroyers. However, the increased combat capability offered by the Aegis Combat System and the passive phased array AN/SPY-1 radar, together with the capability of operating as a flagship, were used to justify the change of the classification from DDG to CG shortly before the keels were laid down for Ticonderoga and Yorktown.
The United States Navy reclassified many of its surface vessels in 1975, changing terminology and hull classification symbols for cruisers, frigates, and ocean escorts.
USS California (CGN-36), the lead ship of the California-class of nuclear-powered guided missile cruisers, was the sixth warship of the United States Navy to be named for the state of California. She was the last active nuclear-powered cruiser for the United States.
The California class was a pair of nuclear-powered guided-missile cruisers operated by the United States Navy between 1974 and 1998. Other than their nuclear power supply and lack of helicopter hangars, ships of the California class were comparable to other guided-missile cruisers of their era, such as the Belknap class. The class was built as a follow-up to the nuclear-powered Long Beach, Bainbridge, and Truxtun classes. Like all of the nuclear cruisers, which could steam for years between refuelings, the California class was designed in part to provide high endurance escort for the navy's nuclear aircraft carriers, which were often limited in range due to their conventionally powered escorts continuously needing to be refueled.
The CG(X) program, also known as the Next Generation Cruiser program, was a United States Navy research program to develop a replacement vessel for its 22 Ticonderoga-class cruisers. Original plans were for 18–19 ships, based on the 14,500 ton Zumwalt-class destroyer with additional ballistic missile defense and area air defense for a carrier group. These vessels were to enter service beginning in 2017. The program was ended in 2010 with its mission to be fulfilled by the successor to the Flight III Arleigh Burke-class destroyers.
The strike cruiser was a proposal from DARPA for a class of cruisers in the late 1970s. The proposal was for the Strike Cruiser to be a guided missile attack cruiser with a displacement of around 17,200 long tons (17,500 t), armed and equipped with the Aegis combat system, the SM-2, Harpoon anti-ship missile, the Tomahawk missile, and the Mk71 8-inch gun.
New Threat Upgrade (NTU) was a United States Navy program to improve and modernize the capability of existing cruisers and destroyers equipped with Terrier and Tartar anti-aircraft systems, keeping them in service longer.
Leahy-class cruisers were a class of guided-missile cruisers built for the United States Navy. They were originally designated as Destroyer Leaders (DLG), but in the 1975 cruiser realignment they were reclassified as guided-missile cruisers (CG).
The Mark 26 Guided Missile Launching System (GMLS) was a United States Navy fully automated system that stows, handles, and launches a variety of missiles. The system supported RIM-66 Standard, RUR-5 ASROC, and potentially other weapons. The Mark 26 had the shortest reaction time and the fastest firing rate of any comparable dual arm shipboard launching system at the time. With only one man at the control console, a weapon can be selected, hoisted to the guide arm, and launched. Several mods provided magazine capabilities of 24 to 64 missiles.
In the early 1960s, the United States Navy was the world's first to have nuclear-powered cruisers as part of its fleet. The first such ship was USS Long Beach (CGN-9). Commissioned in late summer 1961, she was the world's first nuclear-powered surface combatant. She was followed a year later by USS Bainbridge (DLGN-25). While Long Beach was a 'true cruiser', meaning she was designed and built as a cruiser, Bainbridge began life as a frigate, though at that time the Navy was using the hull code "DLGN" for "destroyer leader, guided missile, nuclear". This was prior to the enactment of the 1975 ship reclassification plan, in which frigates (DLG/DLGN), which were essentially large destroyers, were reclassified as cruisers, so that the US Navy's numbers would compete with those of the Soviet Navy. Long Beach, the largest of all the nuclear cruisers, was equipped with a C1W cruiser reactor, while all the others were equipped with D2G destroyer reactors.
United States Navy 
