The 'Harpoonski': A low-cost, low-flying missile designed to outsmart expensive defenses

Wars & Conflicts · Published 16 October 2026 · Updated 25 October 2026 Swipe more like this →

In short: In the world of naval warfare, size isn't always the ultimate advantage. The Soviet Union realized that massive, expensive missiles could be countered by something smaller and harder to detect. Enter the Kh-35: a subsonic cruise missile designed to hug the waves, trading raw power for stealth and affordability.

The Kh-35 (NATO reporting name AS-20 'Kayak') was born from a specific strategic need: the Soviet Navy required a small, cheap, and easy-to-install missile for medium-tonnage ships like frigates. It was designed as a direct, low-cost answer to the American Harpoon missile, earning it the informal nickname 'Harpoonski' due to its similar appearance and role. Technically, the missile is a subsonic turbojet weapon featuring a cruciform wing configuration and a semisubmerged air duct intake. Its primary survival mechanism is sea-skimming—flying at extremely low altitudes to minimize its radar signature. It uses an inertial system to stabilize its flight and reach a target area, then switches to an active radar homing head for the final 20 km of its trajectory.

This 'low and slow' approach allows it to operate in adverse weather and under electronic countermeasures. Despite a price tag of roughly $500,000 USD per unit, this weapon poses a serious danger, being notably more affordable than current models such as Oniks or Kalibr. Its versatility is evidenced by its various iterations: the Kh-35E for export, the Kh-35U for land targets, and the Kh-35UV for helicopter launch. Its effectiveness was highlighted in 2024 reports, where data suggested that only about 6.7% of Kh-35s used since 2022 were intercepted by Ukrainian air defenses.

The development of the Kh-35 was a long road of miniaturization. Initial work began in the 1970s, but the Soviet Union didn't officially greenlight production until 1983–1984. Despite early test failures in 1985 regarding its active radar system, the missile eventually found a market. Interestingly, it was adopted by the Russian Navy only in 2003, after India had already begun receiving export variants in 1996. Today, it remains a cornerstone of coastal defense, notably in the Bal system, which can launch 32 missiles in a single salvo to hit targets at ranges exceeding 300 km.

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