The short answer: Because the submarine can hear a surface ship long before the surface ship can detect the submarine, and therefore it can take evasive action before its detected. Many submarines emit less noise than the ambient water noise. read more
The short answer: Because the submarine can hear a surface ship long before the surface ship can detect the submarine, and therefore it can take evasive action before its detected. read more
In principle, each military submarine is built to make as little sound as possible or emit minimal signals. The ARA San Juan is no exception. During World War II Germany built submarines with certain stealth capabilities. The first models were the class VII vessels of the German Navy. read more