The presence of a Cold War-era naval gun, installed in a fixed position on shore, in today’s precision-guided missile environment of unmanned aerial vehicles, is a reminder that ‘old’ technology has yet to realize its potential. Recent photos taken in the occupied regions of Southern Ukraine have revealed what appears to be ‘AK-306,’ a six-barreled fully automatic 30mm cannon for small naval vessels, installed in a fixed position deep inland.
The pedigree of the AK-306 traces back to the Soviet naval requirement for a lighter and simpler system to be used in conjunction with the AK-630 close-in weapon system. The system was intended to be unguided and electrically powered with the autocannon being the AO-18L autocannon. The ammunition type used in the system was HEI and FR-T, and the system was not intended to be armor piercing. The rate of fire for the system was 1,000 rounds per minute.
However, such a niche has emerged. Because the air defense of the Russians is overextended and the swarm of drones is inexpensive and plentiful on a battlefield, a conventional ship weapon is being upgraded for a C-UAS mission. Although the weapon has a high rate of fire and the ability to see during the day and detect a target even when visibility is poor, the weapon is designed to engage low-speed and small targets and is intended to be used at the rear to protect against a drone attack and a sea-skimming missile.
This is not the first of its kind. Going back to the early part of 2025, Russian troops were seen working on an AK-306 on a KamAZ-5350 all-terrain vehicle for the construction of an anti-UAV defense system. This kind of improvised weaponry symbolizes the shift, which is the deployment of pick-up trucks equipped with heavy machine guns and two-barreled autocannons, along with the MR-2 “Viktor” kit, which are donations given by well-meaning nations for the purpose of defending against the Iranian UAVs like the Shahed.
The US is currently providing the Ukrainian government with 30mm “gun trucks” equipped with radar cueing systems for quick target detection. The need for military forces that are operating under pressure is self-explanatory. The price of firing a gun system round will be less than the price of an intercept missile. This will be all the more so inasmuch as the drone threat is on the point of exhausting the stock of high-quality weapons. A timely burst of autocannon will destroy the target without the price tag of a guided missile.
However, the battlefield is also a never-ending race of one-upmanship. “Jamming, optical tracking, and kinetic intercepts are only a few elements of what will prove to be a multi-layered defense system. Each will find the other side compensating for these weaknesses and vice versa. There are reports of ‘a game of cat and mouse’ as the UAV controllers begin to alter flight plans, communication frequencies, and controls in order to evade these defenses.” It is in this environment that even the trusty AK-306 will have to be meshed into a comprehensive sensor-effector system in order for it to continue to be effective.
The use of these naval guns in defending against attacks from the ground is also reflective of the realities of logistics. As Russia is learning the lessons of war on the battlefield, besides the sanctions that impact its military power, it is not averse to using older systems that do not have the sophistication for less taxing missions. Though these systems do not have the precision and automation that have been incorporated into the close-in weapon systems that have been developed for the latter day battles that have been anticipated for the future, its mechanical reliability would have been most welcome against the airborne threats that have come to symbolize war. From warships to truck beds to sandbagged positions, the AK-306’s history demonstrates another truth: in the age of UAV warfare, the lines between naval warfare, air warfare, and land warfare are being steadily blurred and innovations developed for one type of warfare could have applications for another.
