The replacement of old submarines with new ones offers multiple advantages

For those who are unfamiliar, the average life span of a submarine is around 40 years, and prolonged usage beyond this time would lead to high maintenance expenses and risks. The replacement of old submarines with new ones offers multiple advantages in terms of high performance and efficiency. It is also considered a cost-effective measure for governments in the long run. Therefore, several countries have undertaken submarine development and procurement projects to replace the old ones so that they remain at par with their adversaries in terms of military capabilities.