The Harushio is called a 3rd generation submarine, and makes use of complete double shell system and a tear drop kind hull. The silhouette resembles the Yushio type, but there is a projection element of the countermeasure cleverness sonar in which it varies within the appearance extending towards bow top that makes it is possible to distinguish them. The hull ended up being extended about 1 meter in total size attendant upon inside of warship space enhancement when comparing to the Yushio type. It really is technically derived from the earlier Yushio course, but quiet operating characteristic are strengthened and there are several improvements in underwater capability.