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A guided-missile destroyer (DDG) is a destroyer whose primary armament is guided missiles so they can provide anti-aircraft warfare screening for the fleet. The NATO standard designation for these vessels is DDG, while destroyers which have a primary gun armament or a small number of anti-aircraft missiles sufficient only for point-defense are designated DD. Nations vary in their use of destroyer D designation in their hull pennant numbering, either prefixing or dropping it altogether.

Guided-missile destroyers are equipped with large missile magazines, with modern examples typically having vertical-launch cells. Some guided-missile destroyers contain integrated weapons systems, such as the United States’ Aegis Combat System, and may be adopted for use in an anti-missile or ballistic-missile defense role. This is especially true for navies that no longer operate cruisers, so other vessels must be adopted to fill in the gap. Many guided-missile destroyers are also multipurpose vessels, equipped to carry out anti-surface operations with surface-to-surface missiles and naval guns, and anti-submarine warfare with torpedoes and helicopters.

v t e Naval ships and warships in 19th and 20th centuries
Naval ship classes in service submarine auxiliary Operational zones Brown-water navy Green-water navy Blue-water navy Gun placement Broadside Central battery Casemate Turrets
Aircraft carriers	Amphibious assault ship Anti-submarine warfare carrier Balloon carrier Battlecarrier CAM ship Escort carrier Fighter catapult ship Fleet carrier Flight deck cruiser Helicopter carrier Interdiction Assault Ship Light aircraft carrier Merchant aircraft carrier Seaplane tender Supercarrier
Battleships	Coastal defence ship Dreadnought Fast battleship Pre-dreadnought battleship Super-dreadnought (Standard-type battleship) Treaty battleship
Cruisers	Aircraft cruiser Armored cruiser Battlecruiser Guided missile cruiser Heavy cruiser Pocket battleship Light cruiser Merchant raider Protected cruiser Scout cruiser Strike cruiser Torpedo cruiser Unprotected cruiser
Escort	Aviso Convoy rescue ship Destroyer Destroyer escort Destroyer leader Escort destroyer Escorteur Frigate Guided-missile destroyer Kaibōkan Radar picket Sloop
Transport	Amphibious transport dock Amphibious warfare ship Attack transport Dock landing ship Landing craft Landing craft carrier Landing Craft Support Landing Ship Heavy Landing ship, infantry Landing Ship Logistics Landing Ship Medium Landing Ship, Tank Landing Ship Vehicle Troopship
Patrol craft	Armed boarding steamer Armed yacht Coastal motor boat Corvette Gunboat Harbour defence motor launch Motor launch Naval drifter Naval trawler Ocean boarding vessel Patrol boat Q-ship Steam gun boat Submarine chaser Torpedo boat
Fast attack craft	E-boat MAS MGB Missile boat MTB MTM MTSM PT boat Shin'yō
Mine warfare	Danlayer Destroyer minesweeper Mine countermeasures vessel Mine planter Minehunter Minelayer Minesweeper
Command and support	Amenities ship Ammunition ship Auxiliary repair dock Auxiliary ship Collier Combat stores ship Command ship Crane vessel Depot ship Destroyer tender Dispatch boat Fast combat support ship General stores issue ship Hospital ship Joint support ship Naval tugboat Net laying ship Repair ship Replenishment oiler Submarine tender
Submarines	Attack submarine Ballistic missile submarine Coastal submarine Cruise missile submarine Cruiser submarine Deep-submergence vehicle DSRV Fleet submarine Human torpedo Midget submarine Submarine aircraft carrier U-boat Wet sub
Miscellaneous	Armed merchantman Arsenal ship Barracks ship Breastwork monitor Capital ship Drone carrier Flagship Floating battery Guard ship Littoral combat ship Monitor Mother ship River monitor Training ship
Related	Ship types Sailing vessels

Active and planned guided-missile destroyers

Former guided-missile destroyer classes

References