Sweden's submarines are small and quiet, perfect for the Baltic Sea that many NATO allies share with Russia.

and other submarines. Stealthier vessels with designs that notably increase hydrodynamic efficiency are harder to find and consistently track, but environment plays a role as well. Last week ...

They are equipped with the Oniks and Kalibr type missiles. Unlike most Soviet submarine designs, the Yasen-class boats do not make use of a double-hull-instead it has hybrid design with a lighter ...