Cruisers - CGs

Modern U. S. Navy guided missile cruisers perform primarily in a Battle Force role. These

ships are multi-mission (AAW - Anti-Air Warfare, ASW - Anti-Surface Warfare, ASUW - Anti-Submarine Warfare) surface combatants capable of supporting carrier battle groups, amphibious forces, or of operating independently and as flagships of surface action groups. Due to their extensive combat capability, these ships have been designated as Battle Force Capable (BFC) units. The cruisers are equipped with Tomahawk ASM (Anti-submarine Missile)/LAM( Land Attack Missile) giving them additional long range strike mission capability.

Technological advances in the Standard Missile coupled with the AEGIS combat system in Ticonderoga class cruisers and the upgrading of older cruisers have increased the AAW capability of surface combatants to pinpoint accuracy from wave-top to zenith. The addition of Tomahawk ASM/LAM in the CG-47, CGN-36 classes, has vastly complicated unit target planning for any potential enemy and returned an offensive strike role to the surface forces that seemed to have been lost to air power at Pearl Harbor.

Seal	Ship	Hull #	Homeport
	USS Ticonderoga	CG 47	Pascagoula, MS
	USS Yorktown (Ship History)	CG 48	Pascagoula, MS
	USS Vincennes	CG 49	Yokosuka, Japan
	USS Valley Forge (Ship History)	CG 50	San Diego, CA
	USS Thomas S. Gates	CG 51	Pascagoula, MS
	USS Bunker Hill	CG 52	San Diego, CA
	USS Mobile Bay	CG 53	San Diego, CA
	USS Antietam	CG 54	San Diego, CA
	USS Leyte Gulf	CG 55	Norfolk, VA
	USS San Jacinto	CG 56	Norfolk, VA
	USS Lake Champlain	CG 57	San Diego, CA
	USS Philippine Sea (Ship History)	CG 58	Mayport, FL
	USS Princeton	CG 59	San Diego, CA
	USS Normandy	CG 60	Norfolk, VA
	USS Monterey	CG 61	Norfolk, VA
	USS Chancellorsville	CG 62	Yokosuka, Japan
	USS Cowpens	CG 63	Yokosuka, Japan
	USS Gettysburg	CG 64	Mayport, FL
	USS Chosin	CG 65	Pearl Harbor, HI
	USS Hue City	CG 66	Mayport, FL
	USS Shiloh	CG 67	San Diego, CA
	USS Anzio	CG 68	Norfolk, VA
	USS Vicksburg	CG 69	Mayport, FL
	USS Lake Erie	CG 70	Pearl Harbor, HI
	USS Cape St. George	CG 71	Norfolk, VA
	USS Vella Gulf (Ship History)	CG 72	Norfolk, VA
	USS Port Royal	CG 73	Pearl Harbor, HI

	CG 47-51	CG 52-73
Air Defense
Missile launcher	2 Mk 26 Mod 1 twin-arm launchers (positioned immediately before the bridge and aft between the flight deck and the gun)	2 Mk 41 Mod 0 Vertical Launch System
Magazines	2 with 44 missiles each	2 with 61 missiles each
Missiles	CG 47-48: SM-2MR Block 1	SM-2MR Block 2 or 3
Missiles	CG 49-51: SM-2MR Block 2	Tomahawk ASM/LAM
Anti-ship
Missile	8 - Harpoon	8 - Harpoon
Guns
Main	2 - Mk-45 127 mm (5 in)	2 - Mk-45 127 mm (5 in)
CIWS	Mod 0	Mod 1
CIWS	2 - 20 mm/76 Vulcan Phalanx Mk 15	2 - 20 mm/76 Vulcan Phalanx Mk 15
Close-range	4 - 12.7 mm Machine Guns	4 - 12.7 mm Machine Guns
Torpedoes
Tubes	2 triple Mk 32	2 triple Mk 32
Torpedoes	36 Honeywell Mk 46 Mod 5	36 Honeywell Mk 46 Mod 5

Modifications to accept newly manufactured AEGIS system equipment were phased in during the building of the class. This resulted in the subdivision of the class into a number of different baselines. Four baselines were originally planned. Eventually seven evolved. Initially each baseline represented a point at which upgrades are introduced into new construction.

Variant	Ship	Change
Baseline 0	CG-47/48	Basic Aegis Mark 7 system, with AN/SPY-lA, Weapons Control System Mark 1, Standard-MR (SM-2) Block I missiles, the Mark 116, Mod. 4 ASW fire control system, and the LAMPS-I (SH-2F ) ASW helicopter. AN/UYK-7 computers employed. Both have since had their combat systems up dated to Baseline 1 status, but do not carry towed sonar arrays. Both are still projected to be updated with Mk 41 vertical launch groups in place of the Mark 26 launchers and 5"/62 cal. Mark 45, Mod. 4 extended-range 127-mm guns in place of the original Mark 45 mountings are to be fitted. The AN/U YK-43 computers replaced the AN/UYK-7 and AN/UYK-20 set. Weapons-control and communications suites are to be upgraded.
Baseline 1	CG-49/51	The RAST haul-down and deck-maneuvering system and AN/SQQ-28 helicopter datalink system were added for LAMPS-III Seahawk (SH-60B) helicopters, Standard-MR (SM-2) and missiles were installed, the AEGIS system received improved data displays, and the electronic warfare s uite was enhanced. Both masts are tripods vice quadrapods. They are to have their electronic engineering systems updated to reduce maintenance costs, and the combat systems are to be updated as in the modernized Baseline 0 pair.
Baseline 2	CG-52/58	The Mark 41, Mod. 0 vertical-launch system was substituted for the Mark 26 twin-armed launchers and a vertical-launch Tomahawk capability with AN/SWG-3 launch control system was added, as were an improved Link 11 datalink system and LTYQ-21 displays. ANTIETAM and LEYTE GULF had stand-alone AN/SQR-19 linear towed passive sonar arrays and AN/SQS-53A. MOBILE BAY and later units substituted a 7.32-m rigid inflatable boat for the 26 ft. (7.9 m) motor whaleboat. SAN JACINTO introduced the AN/SQQ-89 (V)3 integrated ASW suite, with the AN/SQQ-53B hull-mounted sonar, AN/S QR-19 towed array, and Mark 116, Mod. 6 ASW fire-control system. All are planned to be updated to carry Standard SM-3 missiles to perform Theater Missile Defense missions and to employ the Cooperative Engagement Capability (CEC). The electronic engineering systems are also to be updated.
Baseline 3	CG 59/64	The lighter AN/SPY-1B radar, with improved radiating characteristics, was substituted for the AN/SPY-1A and new computers (AN/UYK-43 and AN/UYK-44 in place of AN/UYK-7) are employed. In 1996, MONTEREY became the first of this group to be upgraded with the AN/SPY-1D(V) radar and received a combat system upgrade including all-new combat system computers, consoles and displays; the upgrade will permit future installation of such planned upgrades as Cooperative Engagement Capability, Theater Ballistic Missile Defense capability, and new versions of the Standard miss ile (see Cruiser Conversion Program notes under MODERNIZATION/CONVERSIONS above).
Baseline 4	CG 65-73	The AN/SPY-1B(V)D radar, with AN/UKY-43B and AN/UYK-44 computers in place of AN/UYK-7 and AN/UYK-20, was installed, and the ships received the improved AN/UKY-20 data display system and various decision aids. All ships of the group had the AN/SQS-53C bow sonar and the AN/SQR-17 sonar data processor.
Baseline 5	**	Adds capability to operate Standard (SM-2) Block IV (AEGIS ER), Standard (SM-2) Block IVA ATBM and SLAM .
Baseline 6	**	Adds the ability to operate Evolved Sea Sparrow. This baseline also includes an update of the computers in older units
Baseline 7	**	The combat control information system will be changed from a federated to fully distributed system.

In 1996, MONTEREY became the first Baseline 3 ship to upgrade to Baseline 3A, receiving the Baseline 5 Phase III computer program and equipment upgrade, with Joint Tactical Information Display System (JTIDS, Link 16 Mod. 5), the latest AN/UYK-21 display system, and AN/UYK-43 computers in place of U YK-7. PRINCETON, NORMANDY, CHANCELLORSVILLE, COWPENS and GETTYSBURG are to receive similar upgrades, except that PRINCETON and GETTYSBURG may get AN/UYQ-70 displays in place of AN/UYK-21. The first AN/SQS-53D bow sonar update sets were ordered for ships of this class on Dec. 30, 1996. Many ships of the class have had the towed hydrophone arrays removed and put into storage.

**The last three baselines represent new upgrades that will be added to certain ships in this class.

Builders	Ingalls Shipbuilding: CG-47-50, CG 52-57, 59,62, 65-66, 68-69, 71-73
Builders	Bath Iron Works: CG-51,58,60-61,63-64,67,70.
Power Plant	4 General Electric LM 2500 gas turbine engines; 2 shafts, 80,000 shaft horsepower total.
Length	567 feet
Beam	55 feet
Draught	31 Feet
Displacement	Light: 7,015 tons
Displacement	Full Load: CG 47-48 = 9,590 tons; CG 49-51 = 9,407 tons; Others = 9,466 tons
Speed	30 plus knots
Range	6,000 NM at 20 knots
Aircraft	Two SH-60 SeaHawk (LAMPS III)
Crew	24 Officers, 358 Enlisted; accommodations for 405 total