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Warship

Japan

Japan Marine United Corporation (JMU)

Maya-class

Aegis-equipped guided-missile destroyer class built for the Japan Maritime Self-Defense Force, an evolution of the Atago-class with cooperative engagement capability and ballistic-missile-defense-focused systems. Two ships, JS Maya and JS Haguro, entered service to bolster Japan's layered missile defense network.

In service since 2020 · 1 operator countries

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-02

8,200

VLS

300

crew

Procurement snapshot

Availability & export

National export licensing

Subject to Japan export-control approval; verify eligibility with the manufacturer.

Channel: Direct commercial / G2G

Fielded & proven

Limited · 1 operator

In service since 2020. Status: active · ~2 built.

Lifecycle cost (est.)

No public unit price to model from. Why so few systems publish one →

Interoperability

Mk 41 VLS-class

Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.

Compatible munitions & weapons

Publicly reported weapons the Maya-class can carry. Linked items have a full spec page.

SM-2

SM-3

SM-6 RUM-139 VL-ASROC

Type 12 SSM

Full specifications

Firepower

Armament, payload and guidance.

Firepower specifications
Main armament Primary weapon: main gun, cannon or missile type.	127 mm Mk 45 naval gun
VLS cells Vertical-launch missile cells on a warship, a proxy for magazine depth. Higher means more missiles before rearming.	96 Top 9% of warships
Torpedo tubes Number of torpedo tubes (submarines and some surface ships).	6 Stronger than 70% of warships

Physical

Dimensions, weight and crew.

Physical specifications
Length Overall length including gun/probe where applicable.	170 m

Naval

Displacement, speed, endurance and diving depth.

Naval specifications
Displacement Standard displacement in tonnes, the ship’s size class. Larger hulls carry more but cost more and are less agile.	8,200 t
Full-load displacement Displacement fully loaded with fuel, stores and munitions.	10,250 t
Max speed Top speed in knots (surfaced, for submarines). Higher aids positioning and screening.	30 kn Stronger than 75% of warships
Complement Crew size. Fewer eases manning cost; more may indicate a larger, more capable platform.	300
Aircraft carried Embarked aircraft/helicopters. Higher extends the ship’s sensor and strike reach.	1 Stronger than 21% of warships
Propulsion plant Machinery type, nuclear reactor, gas turbine (COGAG), CODAG, diesel-electric, AIP.	COGLAG, 4x gas turbines with hybrid electric drive

Sensors & avionics

Radar, sensor suite and datalinks.

Sensors & avionics specifications
Radar Primary radar. AESA (active electronically scanned array) is the current state of the art.	AN/SPY-1D(V) Aegis multi-function radar

Program

Cost, production scale and operators.

Program specifications
Units built Total production run. Higher means proven manufacturing, mature logistics and spares availability.	2 Stronger than 30% of warships
Operator countries Number of countries operating the system. More operators means broader support ecosystem.	1 Stronger than 45% of warships

Specifications compiled from public Japan Marine United Corporation (JMU) and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-02.

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