Submarines Japan.

This is coolbert:

From a prior blog entry this question asked:

"While not being specifically named these Japanese boats are of the Soryu class submarine? A diesel/electric boat of formidable capability."

NOT so apparently a Soryu class boat able to notionally defeat surface ships of the U.S. Navy during war games. The Japanese for a period of decades however able to manufacture successive generations of evolving, very sophisticated and capable diesel/electric submarines including Soryu class but hardly limited to.

JMSDF = Japanese Maritime Self-Defense Forces.

1. Soryu class.

"The Sōryū-class submarines (16SS) are diesel-electric attack submarines that entered service with the Japan Maritime Self-Defense Force in 2009. The design is an evolution of the Oyashio-class submarine, from which it can most easily be distinguished by its X-shaped tail planes."

2. Oyashio class.

"The Oyashio is a class of Japanese diesel-electric attack submarine operated by the JMSDF. The submarines entered service in the late 1990s. The submarines are larger than the earlier Harushio-class submarines, to provide space for a flank sonar array."

3. Harushio class.

"The Harushio is a Japanese diesel-electric submarine class operated by the JMSDF. The design is an evolution from the Yūshio class being slightly larger and with better noise reduction."

4. Yushio class.

"The Yūshio was a Japanese diesel-electric submarine class operated by the JMSDF. It was a second generation submarine, a development of the Uzushio class submarine, incorporating a teardrop hull, with a resulting increase in underwater performance on the Uzushio class submarine. Ten were built under the fourth defense plan in 1975 fiscal year"

I am impressed. A continuity of effort over a period of decades with a lot of forethought and careful reasoning. Not a hit or miss program. Again, good boats combined with good crews make for excellent to outstanding performance and worthy of respect well merited.

coolbert.