The Typhoon-class submarine could stay submerged for 120 days in uneventful conditions. However, that amount could be further ...

Typhoon Class submarines, also known as "Acula" in Russia, represent the pinnacle of submarine engineering, holding the record as the largest submarines ever built. Created during the Cold War ...

What You Need to Know: The Russian Navy has decommissioned the Dmitry Donskoy, the last active Typhoon-class submarine and the largest submarine ever built. Initially entering service in 1981 as ...

The submarine’s massive size and quiet operation—owing to advanced sound-dampening technologies—made it a formidable ghost in the deep.