Submarine Japan.

This is coolbert:

In case of conflict in the East China Sea do not think American naval assets alone will confront the Chinese.

ALSO THAT FRENCH SUBMARINE NOT ALONE IN THE ABILITY TO DEFEAT AND SINK IN A NOTIONAL MANNER DURING NAVAL WAR GAMES AMERICAN SURFACE VESSELS AND ABLE TO DO SO ALMOST AT THEIR LEISURE.

From the Japan Times: 

"Japan’s crack submarine fleet"

"During the 1998 Rim of the Pacific Exercise off the coast of Hawaii, Adm. Archie Clemens, commander in chief of the U.S. Pacific Fleet, was dumbfounded as a monitor screen showed that eight vessels of his fleet were 'attacked and sunk' one after another by a single MSDF submarine."

Great graphic! Japanese submarine surrounded by five enemy vessels. Ninja warrior exiting the Japanese sub with samurai sword strapped to back, throwing star in hand! What more do you need?

"In the subsequent RIMPAC exercises, MSDF submarines and surface ships have maintained the upper hand. One U.S. naval officer said that those submarines were the last thing he would like to fight, adding that if they got really serious it would become impossible to continue the exercise."

"The reason that has led the United States to give such a complimentary evaluation of MSDF submarines is that they perform at such a high level that even the general Japanese public has trouble grasping just how good they are. This ability stems from two factors: one is the subs’ performance characteristics that are superb even by global standards and the other is the high levels of training that their crews go through."

While not being specifically named these Japanese boats are of the Soryu class submarine? A diesel/electric boat of formidable capability. That combination of good boats and good crews makes for excellent to outstanding performance.

coolbert.