Russia Reportedly Sending World’s Largest Submarine to the Baltic Sea

Russia’s gargantuan Typhoon class nuclear ballistic missile submarine, Dmitry Donskoy—the last of its kind—is reportedly slated to travel from its home on the White Sea around Norway and Denmark, and into the increasingly tense confines of the Baltic Sea this summer. Eventually, it will end up in St. Petersburg to take part in a high-profile Navy parade on July 30th. Also said to be dispatched for the display is Russia’s only active Kirov class battlecruiser, the Pyotr VelikiyThese these huge vessels represent Russia’s most feared and destructive naval relics of the late Cold War, and if this reported plan proves to be accurate, the world will closely watch their voyage deep into the heart of NATO’s “swimming pool.”

The 574-foot-long Dmitry Donskoy is the last operational Typhoon class—indigenously known as the Akula class—boat in the Russian Navy’s inventory. It was the first of six similar vessels, all of which retain the mantle as the largest submarines ever built. The class was built to be the backbone of Soviet Union’s second-strike nuclear deterrent, carrying 20 massive R-39 “Rif” SLBMs with up to 200 warheads in total, for months-long patrols. It was the most deadly single weapon system Russia ever designed during the Cold War.  

The Typhoon class was made especially famous after its likeness was used as the experimental Red October in hit film Hunt For The Red October. Since then, the boat’s size and unique creature comforts have captured the imaginations of military and naval enthusiasts around the globe (read all about it here). Today the Dmitry Donskoy serves as a submarine-launched ballistic missile (SLBM) test boat, supporting the development of the Russian Navy’s accelerated strategic missile programs. This has included testing Russia’s current SLBM of choice, the RSM-56 Bulava missile that fills the launch tubes of Russia’s Borei class nuclear ballistic missile submarines.

Bellona Foundation/wikicommons

The Baltic Sea is usually the playground of smaller attack submarines, namely of the diesel electric variety, not of huge ballistic missile carrying “boomers.” The body of water is very much a littoral environment, with an average depth of around 180 feet, which is hardly the environment for a Typhoon class submarine that displaces 48,000 tonnes while submerged and was built to literally find a place in the deep and remote ocean to hide for long periods of time. According to The Barents Observer even transiting into the region will be a tight squeeze for the Dmitry Donskoy:

“For those who want to see, but can’t go to St. Petersburg, the vessel will have to sail at surface under the Great Belt bridge where vessels with a maximum draught of 15 meters can sail. According to Swedish Maritime Administration, the waters under the Öresund bridge or the Flint channel are too shallow. The draught of a Typhoon submarine is 12 meters.”

But even if the huge submarine doesn’t have a tactical purpose in the Baltic Sea, its appearance there will send a very big reminder to the region and beyond of the heavy-hitting naval capabilities the Russian Navy retains. A Kirov class battlecruiser is also not especially well-suited for operating in such a environment, but its abilities do pose a threat to the region. 

HMS Dragon shadowing the Pyotr Velikiy, Royal Navy

The ship was built to tear apart American carrier battle groups in the open ocean, but their missiles can be used against other targets as well, and  its long-range air defenses pose a credible challenge. But the fact is Russian long-range air defense assets, ballistic missiles, and even possibly land-based cruise missiles are already present in Kaliningrad, so although the Pyotr Velikiy does bring some new capabilities to the table in the region, Russia already has plenty of ways to turn on a no-fly-zone at a flick of a switch, and bombard NATO countries from nearly the inside-out if they actually wanted to do so. Not to mention the fact that a huge battlecruiser in a closed body of water is a big fat target itself. 


Maybe above all else, the fact that multiple nuclear reactors (both vessels run on nuclear power) of Soviet vintage will be plodding through the region is likely to draw the most ire from Moscow’s European neighbors. 

We’ll have to wait and see if the Kremlin confirms the deployment, but considering the region already experiences nearly constant maritime war games, contentious aerial encounters, and even full-on public submarine hunts, it could end of being one hot summer on the Baltic Sea. 

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Tyler Rogoway


Tyler’s passion is the study of military technology, strategy, and foreign policy and he has fostered a dominant voice on those topics in the defense media space. He was the creator of the hugely popular defense site Foxtrot Alpha before developing The War Zone.