As dawn broke on April 7th 1945 the great Super-Battleship Yamato, the pride of the Japanese Imperial Navy and nine escorts steamed toward Okinawa on a suicide mission. It was literally the end of empire and the end of a navy. What had begun on December 7th 1941 was now winding down as the Imperial Navy launched its last offensive operation against the United States Navy.
The Imperial Navy was already at the end of its tether. Following the disasters at the Battle of the Philippine Sea which decimated the carrier air arm of the Imperial Navy; the subsequent losses in the defense of Formosa which used up the majority of any remaining carrier aircraft and crews; and the Battle of Leyte Gulf which decimated the surface forces of the navy what remained was a pitiful remnant of a once dominant fleet.
The great battleship Yamato and her sister ship Musashi were the largest warships ever built until the advent of the USS Enterprise CVN-65. Displacing over 72,000 tons 863 feet long and 127 feet in beam these ships mounted the largest artillery battery ever placed on a warship. Their nine 18.1” guns mounted in three triple turrets each weighing over 2500 tons weighed as much or more than the largest destroyers of the time. They could fire their massive shells 26 miles and had the capability of firing a special anti-aircraft shell known as the Sanshiki or beehive round... (see more at: http://padresteve.com/2014/04/08/death-of-the-yamato/)