Atago class destroyer

Atago in 2014
Class overview
Name:	Atago class
Builders:	Mitsubishi Heavy Industries
Operators:	Japan Maritime Self-Defense Force
Preceded by:	Kongō class
Succeeded by:	27DDG class (planned)
Cost:	¥140 billion $1.48 billion (constant 2009 USD)
Built:	2004–2008
In commission:	2007–
Completed:	2
Active:	2
General characteristics
Type:	Guided missile destroyer
Displacement:	7,700 tons standard 10,000 tons full load
Length:	165 m (541 ft 4 in)
Beam:	21 m (68 ft 11 in)
Draft:	6.2 m (20 ft 4 in)
Propulsion:	4 Ishikawajima Harima/General Electric LM2500-30 gas turbines Two shafts 5-bladed CP props 100,000 shp (75,000 kW)
Speed:	30 knots (56 km/h)
Boats & landing craft carried:	1 Rigid hull inflatable boat
Complement:	300
Sensors and processing systems:	AN/SPY-1D(V) passive electronically scanned array radar OPS-28E surface search radar AN/SQS-53C sonar 3 × AN/SPG-62 FCS AN/SQQ-89 Mk 46 Optronic director Mk 160 FCS Mk 116 FCS
Electronic warfare & decoys:	ESM/ECM：NOLQ-2 4 × Mark 36 SRBOC
Armament:	1 × 5 inch (127mm/L62) Mk-45 Mod 4 naval gun in a stealth-shaped mount. (Made by Japan Steel Works licensed from its original manufacturer) 2 × missile canister up to 8 Type 90 (SSM-1B) 2 × 20 mm Phalanx CIWS 2 × Type 68 triple torpedo tubes (6 × Mk-46 or Type 73 torpedoes) 96-cell Mk-41 VLS: (64 at the bow / 32 cells at the stern aft) for a mix of: SM-2MR Standard Missile SM-3 Anti-Ballistic Missile RUM-139 Vertical Launch ASROC (Anti-Submarine)
Aircraft carried:	1 × SH-60K helicopter
Aviation facilities:	Flight deck and enclosed hangar for one helicopter

The Atago class of guided missile destroyers (あたご型護衛艦, Atago-gata Goeikan^?) is an improved version of the Japan Maritime Self-Defense Force (JMSDF)'s Kongō class.

In 2000, the Japan Defense Agency Maritime Staff Office included another two Aegis ships in its five-year budget on top of the four Kongō-class destroyers originally ordered.

The Atago class is fundamentally an improved and scaled-up version of the Kongō-class destroyers. The class features large accommodation and the ships are capable of flexible operation. One of the most obvious changes is an additional hangar to carry one SH-60K helicopter. In comparison to the Kongō class/Arleigh Burke class (Flight I) which only had helicopter platforms (but no support equipment), these ships have better helicopter handling facilities. To enhance the Atago class' function as command centers, the bridge is two decks higher than aboard a Arleigh Burke class Flight IIA, making their full load displacement over 10,000 tons—the first time for a JMSDF surface combat vessel. The gun caliber has extended from the 54 caliber of the Kongō class to the 62 caliber with strengthened powder charge capable 38 km firing range. As with other Japanese ships being refit, the American-made Harpoon missiles (such as in the initial configuration of the Kongō class) have been replaced with the Japanese-made Type 90 (SSM-1B) surface-to-surface guided missiles.

Japan has also purchased a manufacturing license for these weapons for use on their Kongō-class Aegis destroyers. Japan Steel Works will manufacture, assemble and test the weapons.

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Wikipedia