Sister Ships of the Silent Service

This is the story of two submarines, sister ships, built at the same time and at the same place.  During trials one of the subs sank in the Atlantic Ocean and the other one stood guard and helped in the greatest submarine rescue operation in the world.  When the one was brought back to their original shipyard the other helped all along the way.  Their crews played softball together and their wives played the game of bridge together.  They were at Pearl Harbor together before being stationed in the Philippines together.  When one was sunk by the Japanese the other attacked her enemy in one of the most remarkable tales in US Navy history.