Demonstrating Soviet naval improvements was the Victor III-class submarine, which featured a significantly reduced acoustic signature. Sailors of the US Navy would occasionally, cynically refer to the Victor III as the Walker submarine.
Russia s Akula-Class Submarine Became a Stealth Killer - All Thanks to Japan
In the early 1980s, the Soviet Union had a stroke of luck and was able to import a crucial piece of Japanese technology that made their Akula-class submarines quieter.
Here s What You Need to Remember: Despite its age, it seems the Akula-class is still a potent (and quiet) force to be reckoned with.
American-laid hydrophones littered the ocean floor. They were arranged in arrays, bridging the GIUK Gap chokepoint, the area of ocean in the North Atlantic between Greenland and the United Kingdom with Iceland in the middle.