The Russian submarine shadowed by the Swedish Gripens was transiting the Kattegat, a strategic waterway linking the Baltic approaches with the North Sea system.
Though the highlight is at present on Iran, the Russian navy exercise within the Baltic area continues to attract scrutiny. The Swedish Armed Forces have simply launched some fascinating pictures exhibiting JAS 39 Gripens escorting a Russian Kilo-class submarine because it transited the Kattegat. The images emerge at a time of rising concern over the size and regularity of Russian undersea operations in Northern Europe, which Swedish naval officers say have change into an virtually weekly prevalence.
Swedish fighter jets monitoring Russian submarine within the Kattegat.
On Friday, Swedish JAS 39 Gripen intercepted a Russian Kilo-class submarine within the Kattegat. Along with allies, we at the moment are monitoring the submarine’s continued route into the Baltic Sea. pic.twitter.com/XBcwTPQ1bS
— Försvarsmakten (@Forsvarsmakten) April 10, 2026
The encounter is much from being remoted. A broader sample of persistent monitoring and rapid-response exercise within the Kattegat, a strategic waterway linking the Baltic approaches to the North Sea, has been noticed just lately with a number of reported transits of Kilo-class submarines, dutifully intercepted by the Swedish fighters.
Warships with the Swedish Navy and Coast Guard, alongside JAS-39 Gripens with the Swedish Air Power, are at present shadowing the Russian Kilo-class diesel-electric submarine, Novorossiysk (B-261), within the Baltic Sea, after it handed eastbound yesterday by the Nice Belt close to… pic.twitter.com/1lUH7rxIcq
— OSINTdefender (@sentdefender) October 15, 2025
On Dec. 6, 2025, Capt. Marko Petkovic, chief of operations for the Swedish navy, revealed that encounters with Russian submarines within the Baltic Sea had change into an “virtually weekly” prevalence, highlighting how such contacts are now not seen as uncommon or distinctive occasions however quite as a part of the routine working actions for Swedish forces. As reported by The Guardian, Petkovic mentioned Russian submarine exercise within the area had elevated noticeably in recent times, to the purpose that sightings had been now “quite common,” reflecting what he described as Moscow’s steady effort to bolster its navy presence within the Baltic. He additionally pointed to Russia’s ongoing naval modernization, together with the manufacturing of 1 Kilo-class submarine per yr, as proof that this isn’t a short lived surge however a part of a broader and deliberate long-term buildup.
The Swedish “staff” dispatched to watch the Russian Kilo-class submarine exercise within the Kattegat waters is identical as noticed in comparable intercept missions counting on a layered package deal combining JAS 39 Gripen fighters, offering airborne overwatch, with Visby-class corvettes at sea.
The latter, is a category of Swedish corvettes optimized for stealthy operations near shore. Constructed with a composite hull and designed to attenuate radar and infrared signatures, the Visby class is meant to function within the type of shallow, complicated maritime surroundings discovered within the Baltic, the place it could mix velocity, sensors and multirole functionality to hunt submarines, monitor floor site visitors and defend key sea lanes.
The Kilo class is a household of Russian diesel-electric low acoustic signature assault submarines designed for stealthy operations in coastal and enclosed seas. These boats are armed with six 533 mm torpedo tubes and, in later variants, may also launch Kalibr cruise missiles. They’re thought-about a reputable menace to floor ships, land targets and maritime site visitors in confined waters such because the Baltic.
Though surfacing could also be required for a number of completely different causes (air flow, communications, navigation updates, or to cope with technical points), the diesel-electric submarines, not like nuclear ones, have to floor or, at the very least, come as much as snorkel depth, sometimes: when submerged, the boat depends on batteries, which permit it to stay quiet however just for a restricted interval. As soon as these batteries are depleted, the submarine should elevate a snorkel mast or floor to herald oxygen, run its diesel engines, and recharge them.
After they floor, they’re simpler to detect and observe, and change into extra weak to Swedish Gripen C fighters and Visby corvettes. On the identical time, their presence above the floor can present a uncommon alternative to seize fascinating imagery, such because the images launched at the moment by the Swedish Armed Forces.
What makes the Swedish method notably fascinating is the truth that it seems to rely for the anti-submarine warfare mission on a mixture of belongings, the JAS 39 Gripens and Visby-class corvettes, quite than on devoted maritime patrol and ASW (Anti-Submarine Warfare) plane just like the P-8 Poseidon. In that sense, it additionally appears to mirror a workaround imposed, at the very least partly, by the shortage of a specialised fixed-wing ASW platform. Plane just like the P-8 (and P-72) are particularly designed for the maritime patrol position, combining lengthy endurance, wide-area search functionality, sonobuoy deployment and onboard acoustic processing. They’re additionally outfitted with numerous ESM (Digital Help Measure) sensors, that make them ISR (Intelligence Surveillance Reconnaissance) platforms too.
In contrast, the usage of fighters and corvettes factors to a unique method, one that will nonetheless work within the Baltic’s confined surroundings, however stays considerably completely different from the extra typical ASW mannequin constructed round purpose-designed patrol plane.
