Pacific Ocean, (Jun 4, 1998) The attack submarine USS Columbus (SSN 762) home ported at Naval Station Pearl Harbor, Hawaii, conducts an emergency surface training exercise, 35 miles off the coast of Oahu, HI. U.S. Navy photo by Photographer's Mate 2nd Class David C. Duncan (RELEASED)
Crewman on board the U.S. Navys Los Angeles-class attack submarine USS Baltimore (SSN 704) stand by with a grappling hook to snag a mail shipment being lowered by an SH-60 Seahawk helicopter from Anti-Submarine Squadron Five (HS-5) July 17, 1996. The Baltimore is part of the aircraft carrier USS George Washington (CVN 73) Battle Group, which is just days away from completing their scheduled six-month deployment in the Mediterranean.
Spectacular photos of the US Navy's most powerful battleship ever
This is the USS Iowa, the first of the largest, most powerful battleship class ever in the United States Navy, equipped with nine 16-inch (406mm) guns that could fire nuclear shells—the only American ship in history with this capability.
The atomic submarine, USS Thresher, sank in the Atlantic Ocean, off the coast of New England, April, 10, 1963, while on a training mission. The entire crew of 129 including officers, sailors & civilians perished. Launched in 1960, the USS Thresher was the 1st of the new class of atomic submarines which are said to be quieter & can reach greater depths than previous atomic subs.