Scene aboard the signal bridge of the USS Minneapolis (CA-36) of sailors enjoying their morning coffee.

Wargaming participants at the Naval War College, RI.

President John F. Kennedy addressed the U.S. Naval Academy class of 1967 from the steps of Bancroft Hall on August 1, 1963.

Captain Joseph K. Taussig Jr., USN, photographed as a midshipman at the U.S. Naval Academy.

Petty Officer 2nd Class Cory Sumner, a San Francisco Maritime Enforcement Specialist, directs Blasjo, an explosive detection K-9, during a search of AT&T Park Thursday, March 27, 2014. The goal of the exercise is to get the explosive detection K-9s, like Blasjo, prepared to do sweeps in preparation of the baseball season. U.S. Coast Guard photo by Petty Officer 3rd Class Adam Stanton

140412-N-PM781-001 BATH, Maine (April 12, 2014) Secretary of the Navy (SECNAV) Ray Mabus speaks with media before the christening ceremony for the Zumwalt-class guided-missile destroyer (DDG) 1000. The ship, the first of three Zumwalt-class destroyers, will provide independent forward presence and deterrence, support special operations forces and operate as part of joint and combined expeditionary forces. The lead ship and class are named in honor of former Chief of Naval Operations Adm. Elmo R. Bud Zumwalt Jr., who served as chief of naval operations from 1970-1974. (U.S. Navy photo by Mass Communication Specialist 1st Class Arif Patani/Released)

USN Hospital Ship USS Sanctuary (AH-17), no date.

The SS Andrea Doria sinking into the Atlantic following a collision with another vessel in July 1956.

USS Constellation (CV-64) and USS Hoel (DDG-13) replenish from the USS Camden (AOE-2) while operating in the Tonkin Gulf during Vietnam.

USS Camden (AOE-2) replenishes the USS Constellation (CV-64) and USS Hoel (DDG-13) in the Gulf of Tonkin.

USS Block Island (CVE-21) underway in October 1943.

The USS Block Island (CVE-21) underway in the Atlantic in heavy seas during World War II.

Bow view of the USS Block Island (CVE-106) underway in August 1953.

Starboard side view of the USS Block Island (CVE-106) underway, 1945.

USS Block Island (CVE-106) off the north end of Vashon Island, Washington, 1945.

Aerial stern view of the USS Block Island (CVE-106) underway off Vanshon Island, Washington, in January 1945.