Bober (Beaver)

Ukraine's UJ-26 Bober, or Beaver, is a long-range fixed-wing one-way attack drone used for deep strikes against targets in Russia and occupied Crimea.

Overview

The Bober, also rendered Beaver or Bobr, is a Ukrainian long-range one-way attack drone associated with Ukraine's Main Directorate of Intelligence, HUR. Open-source profiles describe it as the UJ-26 Bober: a fixed-wing, piston-powered strike UAV with reported range between 600 km and 1,000 km, a roughly 20 kg shaped-charge warhead, and a unit cost far below crewed aircraft or Western cruise missiles. The type entered public view in 2023 and became one of the recognizable Ukrainian airframes used in deep-strike operations against Moscow, Crimea and Russian military facilities, according to Wikipedia's compiled profile and later Ukrainian reporting by NV.

The Bober sits in a category between low-cost loitering munitions and strategic cruise missiles. It is slower and more vulnerable than a conventional cruise missile, but it gives Ukraine a relatively economical means to impose air-defense, security and infrastructure costs at ranges that reach the Moscow region.

Development

The Bober appears to have emerged from Ukraine's wartime acceleration of indigenous long-range strike drones. In December 2022, the Telegram-linked fundraising initiative Hovor Khell, working with the Govor Help charitable foundation and publicly fronted by Ukrainian blogger and volunteer Ihor Lachenkov, raised funds for HUR with a stated aim of acquiring five Ukrainian kamikaze drones called "Beavers"; the campaign target was 20 million hryvnia, roughly $500,000 at the time, as summarized by Wikipedia and reported in early open-source accounts.

Manufacturer attribution remains unsettled. Kyiv Post reported in 2023 that the identity of the company producing the drones had not been disclosed and noted speculation that HUR itself might be supplying them, while later reporting relayed by Euromaidan Press and Militarnyi described the drone as developed by "Ukrjet," a private Ukrainian firm associated in open sources with the UJ-22 Airborne drone. Because neither a Ukrainian government datasheet nor a company disclosure has publicly confirmed the production entity, "Ukrjet" is best treated as a reported, unconfirmed manufacturer attribution rather than an official program fact, consistent with the sourcing caveat in Kyiv Post and Euromaidan Press.

The first public sightings came in 2023. Militarnyi reported that a drone with the Bober's canard layout was seen over Russia's Tula region in March 2023 and that similar airframes were associated with strikes around the same period; campaign photographs published in May 2023 showed the distinctive dark-blue, canard-equipped drone and indicated it had already been used operationally, according to Militarnyi.

Design & capabilities

The Bober is a fixed-wing, canard-layout one-way attack drone with forward horizontal control surfaces, a main wing, an inverted or V-shaped tail, and a rear-mounted gasoline piston engine driving a pusher propeller. H I Sutton's survey of Ukrainian one-way attack UAVs identifies the Bober as one of Ukraine's larger long-range strike drones and notes its distinctive canard planform and pusher-propeller configuration, while H I Sutton and Kyiv Post both describe a slow propeller-driven profile broadly reminiscent in sound and role of the Iranian-designed Shahed-136.

Reported dimensions are approximate rather than official. Kyiv Post and later Ukrainian reporting put length at about 2.5 m, wingspan around 2.5 m to 3.5 m depending on source, and launch weight around 150 kg. Range is usually reported between 600 km and 1,000 km; NV cites a range up to 1,000 km, a speed band around 120-200 km/h, endurance up to about seven hours, and a unit cost estimate of about $108,000.

The warhead is commonly described as a KZ-6 shaped charge of roughly 20 kg. That payload is suitable for penetrating structures, light fortifications or vehicle targets, but it is much smaller than the warheads carried by many cruise missiles. Guidance is reported as satellite navigation and inertial navigation in the baseline form. By mid-2025, Ukrainian reporting described an upgraded Bober with FPV-style terminal control, thermal imaging and a higher-quality real-time video/data link, allowing an operator to guide the drone against moving or imprecisely located targets; Euromaidan Press attributes that assessment to Militarnyi analysis of HUR-released footage.

Launch arrangements also appear to have evolved. Early Bobers used landing gear and runway-style launch. The FPV-upgraded configuration reported in 2025 used catapult launch, removing landing gear from the airframe and improving aerodynamic cleanliness, though Euromaidan Press noted that the catapult method requires a larger setup and more preparation per drone than a simple runway departure.

Variants

Open sources do not identify a formal Ukrainian variant naming scheme, but they support two broad configurations:

• Baseline UJ-26 Bober: runway-launched, GNSS/INS-guided one-way attack drone with fixed target coordinates and a reported 600-1,000 km range.
• FPV-style upgraded Bober: catapult-launched configuration with thermal imaging and real-time operator terminal guidance, publicly documented in 2025 reporting by Euromaidan Press and associated with HUR strike footage from occupied Crimea.

Combat record / operational use

The Bober's first widely reported operational appearances came in 2023, including drones observed over Russia's Tula region and attacks around Moscow. Militarnyi's account of the 30 May 2023 Moscow attack identified a new Ukrainian drone type from footage and wreckage features, including the canard layout, pusher propeller and engine sound; Russia's Ministry of Defense claimed eight drones were involved, with several intercepted by Pantsir systems or electronic warfare, according to Militarnyi.

In July and August 2023, drones matching the Bober's appearance struck Moscow-City's IQ-quarter towers. Kyiv Post reported that the 1 August strike hit the 21st floor of a tower housing Russia's Ministry of Economic Development, caused an explosion equivalent to roughly 2 kg of TNT, and damaged about a quarter of that floor's office space without reported casualties, while identifying the drone type through distinctive visible features in available footage and images in Kyiv Post.

The Bober was later linked to longer-range military targets. On 9 July 2024, Ukraine attacked Russia's Kapustin Yar strategic missile testing facility in Astrakhan Oblast, more than 400 miles from the front line; The War Zone reported that Ukrainian Bober drones were identified in footage, Russian sources claimed more than 20 drones were involved, and subsequent satellite imagery showed scorch marks at the site, according to The War Zone.

On 1 July 2025, HUR released footage from a strike in occupied Crimea showing Bober drones used against Russian air-defense and aviation assets at or near Saky airbase. United24 Media reported Ukrainian claims that the strike destroyed or damaged a Pantsir-S1 system, a Niobium-SV radar, a Pechora-3 coastal radar, a Protivnik-GE radar and a Su-30 fighter, with HUR describing the targets as high-value assets; the same episode provided the clearest public evidence of the FPV-style terminal-control upgrade, as covered by United24 Media and Euromaidan Press.

NV's 2026 profile places Bober among Ukraine's standing set of medium- and long-range strike drones, alongside Liutyi, Palianytsia and Morok. It also cites Ukrainian military commentator Mykhailo Zhyrokhov identifying Bober as one of multiple drone types used in a June 2026 strike on the Moscow Oil Refinery that disrupted operations around Moscow's airports, as reported by NV.

Advantages

• Long reach for cost: reported 600-1,000 km range and roughly ~$100,000-110,000 estimated unit cost give Ukraine a cheaper deep-strike option than conventional cruise missiles, according to Kyiv Post and NV.
• Recognizable deep-strike record: the type has been linked to Moscow-region attacks, Kapustin Yar and occupied Crimea, demonstrating reach against targets far beyond the front line.
• Canard layout: Ukrainian reporting credits the configuration with better maneuverability and altitude-change potential than simpler flying-wing one-way drones, a useful trait for routes through defended airspace.
• Upgrade path: the FPV-style terminal-control configuration adds operator-guided endgame flexibility against moving or poorly geolocated targets, based on Euromaidan Press reporting.
• Domestic supply logic: the system fits Ukraine's wartime pattern of scaling indigenous long-range strike drones instead of relying only on foreign-supplied missiles.

Drawbacks / limitations

• Low speed: a reported 120-200 km/h speed band gives defenders time to detect, track and engage the drone when sensors and weapons are positioned correctly.
• Electronic-warfare exposure: baseline satellite/inertial guidance and propeller-driven flight make the type vulnerable to jamming, spoofing and route disruption; Russian claims from the May 2023 attack included drones diverted by electronic warfare, as reported by Militarnyi.
• Small warhead: the commonly cited roughly 20 kg shaped charge limits destructive effect compared with larger cruise missiles or heavy one-way attack drones.
• Launch constraints: the original runway launch reduced dispersal flexibility, while the later catapult method improves airframe efficiency but reportedly requires a larger and more time-consuming launch setup.
• Industrial opacity: manufacturer identity, production volume and official unit cost are not publicly established, limiting confidence in assessments of sustainable scale.

Counterparts

• Liutyi (UA long-range strike drone)
• FP-5 Flamingo (UA long-range cruise missile)
• Shahed-136 (RU/IR loitering munition)

The closest operational comparison is the Shahed-136: both are propeller-driven one-way attack drones used for long-range strikes and air-defense burdening. Bober differs by origin, airframe layout and reported Ukrainian upgrades toward real-time terminal control. Liutyi and FP-5 Flamingo sit in the same Ukrainian deep-strike ecosystem, but Liutyi is a larger long-range drone and FP-5 is a cruise missile rather than a piston-propeller UAV.

Outlook

Bober is likely to remain useful as long as Ukraine can produce it at scale and adapt its guidance against Russian electronic warfare. Its strongest niche is not precision comparable to high-end cruise missiles, but the ability to impose recurring long-range pressure at a lower cost and in larger numbers. The main indicators to watch are whether the FPV-style upgrade becomes standard, whether catapult launch improves survivability and range without slowing sortie generation, and whether public evidence shows sustained production beyond occasional high-profile HUR operations.

Key specifications

Sources

1. Wikipedia — "Bober (drone)." https://en.wikipedia.org/wiki/Bober_%28drone%29
2. Kyiv Post — "What Is Known About Ukrainian 'Beaver' Kamikaze Drones." https://www.kyivpost.com/post/20129
3. The New Voice of Ukraine — "UJ-26 Bober: The drone hitting deep inside Russia." https://english.nv.ua/nation/uj-26-bober-the-drone-hitting-deep-inside-russia-50619436.html
4. Euromaidan Press — "FPV-style upgrade gives Ukrainian long-range UJ-26 Beaver drone real-time visuals." https://euromaidanpress.com/2025/07/01/fpv-style-upgrade-gives-ukrainian-long-range-uj-26-beaver-drone-real-time-visuals/
5. H I Sutton / Covert Shores — "Ukraine's Long Range One-Way Attack UAVs." https://www.hisutton.com/Ukraine-OWA-UAVs.html
6. United24 Media — "Ukraine's Bober drones hit Russia's Pantsir-S1, radars and Su-30 in Crimea strike." https://united24media.com/latest-news/ukraines-bober-drones-hit-russias-pantsir-s1-radars-and-su-30-in-crimea-strike-video-9527
7. The War Zone — "Ukraine Situation Report: Russian strategic missile testing facility attacked." https://www.twz.com/news-features/ukraine-situation-report-russian-strategic-missile-testing-facility-attacked
8. Militarnyi — "Moscow attack: New details revealed on UAVs used in incident." https://mil.in.ua/en/news/moscow-attack-new-details-revealed-on-uavs-used-in-incident/

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