Executive Summary
The YJ-20 "Eagle Strike-20" hypersonic anti-ship ballistic missile (ASBM) made its official public debut on September 3, 2025, at the China Victory Day Parade, signaling a major evolution in multi-domain maritime strike networks. Integrated within the standardized Maritime Combat Group, the YJ-20 provides the People's Liberation Army Navy (PLAN) with a mature biconic reentry weapon system explicitly engineered to challenge hostile naval dominance within the first and second island chains of the Indo-Pacific region.
Moving beyond older subsonic and supersonic sea-skimming frameworks, the YJ-20 combines an extensive operational range with an extreme terminal speed of Mach 10. By utilizing advanced trajectory profiles that bypass traditional shipboard air defense radar networks, this fully operational weapon system represents a primary pillar of China's anti-access/area-denial (A2/AD) network, presenting a high-tier threat to heavy surface combatants and carrier strike groups.
Technical Profile
The technical parameters of the YJ-20 are grounded in official parade listings, verified state finalization data, and military type-certification disclosures, highlighting its revolutionary performance metrics over legacy anti-ship models.
Propulsion & Speed
Utilizes a robust two-stage solid-propellant rocket motor configuration designed to accelerate the payload rapidly within the upper atmosphere. This setup yields a steady cruise velocity of Mach 6, accelerating to an extreme terminal dive speed of Mach 10 in its final phase.
Range & Trajectory
Maintains a verified operational strike range of 1,500 kilometers. The missile executes a depressed aeroballistic trajectory, cruising at stable altitudes of 30 to 40 kilometers within the atmosphere to compromise standard tracking systems before delivering a near-vertical terminal top-attack.
Guidance & Aero-Design
Features a pragmatic biconic reentry vehicle configuration that utilizes trapezoidal aerodynamic control fins for high-altitude maneuverability. The guidance suite pairs BeiDou satellite navigation networks for real-time mid-course tracking updates with an active homing radar terminal seeker.
Warhead & Thermal Dynamics
Carries a heavy conventional penetrator warhead optimized for targeting large surface vessels. Its double-cone geometry effectively generates a detached oblique shock wave that diverts extreme stagnation temperatures (up to 3,500 K) away from its steering fins, ensuring high-g terminal evasion capability.
Performance Comparison
Verified Launch Platforms
The YJ-20 is fully standardized across the PLAN fleet, deploying seamlessly via standardized missile launch enclosures. Click on a verified platform card below to review its tactical deployment role.
Strategic Implications
1. Exploiting Fleet Defense Altitude Gaps
The YJ-20 strategically cruises at altitudes of 30 to 40 km, operating precisely within the blind zone of modern naval air defenses. It flies beneath the minimum intercept threshold of exo-atmospheric interceptors like the SM-3 (which functions above 70-80 km), yet remains above the effective high-altitude engagement limits of terminal interceptors like the SM-6, creating an operational interception gap.
2. Neutralizing Phased-Array Radars via Top-Attack
During its final approach, the missile executes a near-vertical terminal dive ("灌顶" top-attack) at speeds of Mach 8 to 10. This trajectory bypasses the primary tracking arcs and optimal scanning fields of standard shipboard phased-array radars, which are optimized primarily for low-altitude, horizontal sea-skimming vectors, leaving minimal reaction time for target engagement.
3. Multi-Domain Kill Chain Integration
Operating far past shipboard sensor limits, the YJ-20 relies on a deep multi-domain network. The kill chain connects space-based LEO synthetic aperture radar (SAR) satellites, airborne high-altitude long-endurance (HALE) UAVs like the supersonic WZ-8, and the BeiDou constellation for real-time tracking. This allows surface fleets to safely drop old shipboard active search radars to limit their signatures while projecting mass-saturation tactics.
⚠️ Unverified & Speculative Intelligence
The following points originate from unofficial military blog spaces, open-source enthusiast platforms, and speculative online forums. These parameters lack official confirmation from state defense channels and should be evaluated with appropriate analytical caution.
- Dimensional Constraints: Enthusiast projections estimate the weapon's total length at 8.0 to 10.0 meters with an 85 cm first-stage booster diameter. While unofficial, this data possesses high structural plausibility as it aligns perfectly with the physical dimensions of the deep 9-meter H/HT-1 vertical launch cells.
- Warhead Payload Mass: Forums suggest a conventional warhead package of approximately 250 kg optimized as a pure kinetic penetrator. While plausible for hull penetration missions of this scale, the exact composition, mass metrics, and structural materials of the warhead remain classified.
- Tactical Nuclear Option: Isolated rumors mention a low-yield tactical nuclear capability ranging from 5 to 50 kilotons. This speculation is assessed as highly improbable, as it directly conflicts with China's declared non-first-use nuclear posture and the purely conventional maritime theater doctrine of the surface fleet.
- Dual-Mode Electro-Optical Seekers: Some amateur networks claim the inclusion of a dual-mode active radar and infrared/electro-optical terminal seeker active within a final 10 km window. This feature holds low-to-medium plausibility due to severe aerothermal window degradation and plasma layer interference typical at Mach 10 velocities.