Maya-class destroyer

Maya-class destroyer
Name	Maya-class destroyer
Caption	JS Maya underway in 2020
Builders	Japan Marine United
Operators	Japan Maritime Self-Defense Force
Class before	Atago-class destroyer
In commission	2020–
Type	Guided-missile destroyer
Displacement	8,200 tons standard, 10,250 tons full load
Length	169.9 m (557 ft)
Beam	22.2 m (73 ft)
Draft	6.4 m (21 ft)
Propulsion	COGLAG; 2 × General Electric LM2500 gas turbines, 2 × electric motors
Speed	30 knots (56 km/h)
Range	7,000 nmi (13,000 km)
Complement	300
Sensors	AN/SPY-1D radar, OPS-50 radar, OQQ-24 sonar
Armament	1 × Mk 45 Mod 4 naval gun, 96-cell Mk 41 VLS, 2 × Phalanx CIWS, 2 × HOS-303 triple torpedo tubes, 8 × Type 90 Ship-to-Ship Missile
Aircraft carried	1 × SH-60K helicopter
Aviation facilities	Enclosed hangar and flight deck

Maya-class destroyer is a class of two guided-missile destroyers in service with the Japan Maritime Self-Defense Force (JMSDF). As the first Japanese warships designed with integrated electric propulsion and enhanced ballistic missile defense capabilities, they represent a significant technological leap. The class, comprising JS Maya and JS Haguro, serves as a cornerstone of Japan's naval power projection and regional security commitments, including within the framework of the U.S.-Japan Security Treaty.

Development and design

The development of the Maya-class was driven by the need to replace older vessels and bolster Japan's BMD network against threats from nations like North Korea. The design is a direct evolution of the preceding Atago-class destroyer, incorporating lessons from the Kongo-class destroyer and leveraging technology from the United States Navy. A key innovation is the adoption of the COGLAG (Combined Gas turbine Electric And Gas turbine) propulsion system, which improves fuel efficiency and provides ample electrical power for advanced sensors and future weapons like railguns. The design work was led by the Acquisition, Technology & Logistics Agency in collaboration with prime contractor Japan Marine United.

Construction and service history

Both vessels were constructed at the Japan Marine United shipyard in Yokohama. The lead ship, JS Maya, was laid down in 2017, launched in 2018, and commissioned into the Japan Maritime Self-Defense Force in March 2020. The second ship, JS Haguro, followed a similar timeline, being commissioned in March 2021. Their construction and commissioning were closely monitored by allies, including the United States Seventh Fleet, and occurred amidst increasing regional tensions in the South China Sea and around the Korean Peninsula.

Specifications

The Maya-class has a length of 169.9 meters, a beam of 22.2 meters, and a full-load displacement exceeding 10,000 tons, making them among the largest surface combatants operated by the JMSDF. The COGLAG system integrates General Electric LM2500 gas turbines with electric motors for cruising. They have a top speed of 30 knots and a range of 7,000 nautical miles. The ships accommodate a crew of 300 and feature extensive automation. Aviation facilities include a large flight deck and an enclosed hangar for a single SH-60K helicopter.

Armament and systems

The primary sensor is the AN/SPY-1D multi-function radar, a component of the Aegis Combat System Baseline 9, which enables simultaneous air defense and ballistic missile tracking. The main offensive and defensive punch comes from a 96-cell Mk 41 Vertical Launching System capable of firing a mix of Standard Missile-3 and SM-3 interceptors for BMD, Standard Missile-6, and RUM-139 VL-ASROC anti-submarine rockets. Other armament includes a Mk 45 Mod 4 5-inch gun, two Phalanx CIWS for point defense, eight Type 90 Ship-to-Ship Missile launchers, and two triple HOS-303 torpedo tubes for engaging submarines.

Operational history

Since entering service, both ships have been assigned to Escort Flotilla 1, homeported at Yokosuka Naval Base, operating alongside United States Navy assets. Their primary operational focus has been on Ballistic missile defense patrols and integrated exercises, such as those with the USS Ronald Reagan carrier strike group. JS Maya participated in the multinational exercise RIMPAC in 2022, demonstrating interoperability with forces from Australia, Canada, and the Republic of Korea Navy. Their deployments are a critical element of Japan's response to regional security challenges.

Ships in class

{| class="wikitable" |- ! Name !! Hull number !! Builder !! Laid down !! Launched !! Commissioned !! Status |- | JS Maya || DDG-179 || Japan Marine United, Yokohama || 2017 || 2018 || 19 March 2020 || Active in service |- | JS Haguro || DDG-180 || Japan Marine United, Yokohama || 2018 || 2019 || 19 March 2021 || Active in service |}

Category:Destroyer classes Category:Ships of the Japan Maritime Self-Defense Force