JL-3 Submarine Missile

Full Specifications

China JL-3 Submarine-Launched Ballistic Missile (SLBM)

The JL-3 (Julang-3 or Giant Wave-3), NATO reporting name CSS-NX-20, represents a significant advancement in China’s sea-based strategic nuclear forces. As a third-generation submarine-launched ballistic missile (SLBM), it provides the People’s Liberation Army Navy (PLAN) with a more survivable and far-reaching deterrent. Developed amid growing great-power competition, the JL-3 allows Chinese ballistic missile submarines to target distant adversaries, including the continental United States, while operating closer to home waters, thereby improving platform survivability.

This solid-fuel missile marks a notable upgrade over the JL-2, offering extended range and improved payload options. It was first tested in 2018 and is believed to have entered service around 2022–2023, with public unveiling during the 2025 Victory Day Parade. Recent tests, including a 2026 Pacific launch, underscore ongoing efforts to validate its intercontinental capabilities.

Manufacturer

The JL-3 is designed and produced in China by state-affiliated defense entities under the China Aerospace Science and Industry Corporation (CASIC) or related institutes, consistent with China’s strategic missile programs. It draws technological lineage from the land-based DF-41 ICBM.

Speed and Range

The JL-3 achieves intercontinental performance with an operational range exceeding 10,000 km (some estimates reach 11,000–13,000 km), enabling strikes on the U.S. mainland from the South China Sea or coastal patrol areas. It is a three-stage solid-fuel rocket capable of high speeds, with reentry vehicles reaching hypersonic velocities (approaching Mach 20+ during terminal phase). This combination of range and speed complicates missile defense efforts.

Cost/Price

Exact unit costs for the JL-3 are not publicly disclosed due to its classified strategic nature. Estimates for comparable modern SLBM programs suggest high development and production expenses, likely in the tens of millions of dollars per missile, reflecting advanced solid-fuel propulsion, guidance systems, and MIRV technology. Lifecycle costs include submarine integration and maintenance for the Type 094 Jin-class fleet.

The missile features astro-inertial guidance supplemented by China’s Beidou satellite navigation system, providing accuracy with a reported CEP around 100 meters. It is nuclear-capable, with warheads estimated at 250 kt to 1 Mt yield, and supports MIRV configurations (likely 3–4 or more reentry vehicles). Launch compatibility is primarily with Type 094 submarines (12 tubes), with expectations for the larger Type 096.

In operational use, the JL-3 strengthens China’s nuclear triad by enhancing second-strike credibility. Its deployment on Jin-class boats, now being retrofitted, expands patrol flexibility and reduces reliance on vulnerable land-based systems.