The type 636 submarine is considered to be one of the quietest diesel submarines in the world . it is said to be capable of detecting an enemy submarine at a range 3 to 4 times greater than it can be detected itself 正如海军情报部门所称，改进型“基洛”级潜艇是世界上最安静的潜艇之一，除装备俄罗斯海军外，还向印度伊朗中国等国出口。
