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Essex-Class: The Best Aircraft Carriers to Ever Sail?

Essex-Class Aircraft Carrier
Image: Creative Commons.

If you were a sailor assigned to U.S. Naval aviation during the middle of 1943 and onward, you probably served on one of the Essex-class of aircraft carriers. Twenty-four were built though the Navy originally wanted 32. This stalwart served through the 1960s and 1970s when the new super aircraft carriers came online. 

These capital ships meant business. They beat back the Japanese and helped face down the Soviets during the Cold War after a sterling record toward the end of World War Two. One of the more famous carriers even served in Vietnam. This is the story of the worthy Essex-class carrier that won’t leave you disappointed.

Essex-Class: Bend But Not Break

Of the 32 original Essex ships, the Navy cancelled eight while 24 were laid down. Seventeen of the Essex-class carriers saw combat in the Second World War. The Essex ships served at the end of the war in the Pacific starting in 1944, at a time when scads of Japanese kamikaze pilots menaced American vessels. The Essex-class were survivable carriers, some suffered damage from the suicide missions, but no ship was lost.

The Americans Believed the Carriers Had a Promising Future

The Essex-class began in the late 1930s with the rise of Germany and Japan. Congress passed legislation in 1938 to increase the tonnage of ships in a departure from limitations imposed by the Washington Naval Treaty that ended in 1936. Designers wanted the carriers to sail through the Panama Canal, so this put a limit on their size. But engineers and officers who served onboard other carriers envisioned a flat-top that could bring the fight to the enemy and win major naval engagements.

The shipbuilding activity was a team effort from the beginning. In a process that was ahead of its time, feedback and opinions from pilots, catapult and arresting gear personnel, ship drivers, and maintenance technicians were gathered and used to design the Essex-class. 

Punch Out the Enemy 

Curiously, the Navy wanted to employ a concept called the “Sunday Punch.” This meant the flight deck would be capable of handling four squadrons totaling 90 aircraft for a decisive blow against the enemy with a single mission. Aviation chiefs envisioned at least 36 fighters, 37 dive bombers, and 18 torpedo bombers. This made it difficult to build the flight deck big enough to handle all those airplanes. But if the design eliminated some of the guns and allowed the deck to hang over the ship, the arsenal of aircraft would fit. 

The Navy determined that the island could be downsized to enlarge the flight deck too. Putting the folding elevators toward the edge of the ship also conserved space on the rectangular-shaped flight deck. The deck was finally designed to be 872 feet with two catapults and several arrestor cables.

In an innovation for that time, the shipbuilders used Special Treatment Steel (STS), which is a nickel-chromium steel alloy. This enabled many parts of the ship such as the hangar deck and bulkheads to have more protective armor. The ships displaced 34,000 tons.

Then the Building Started All Over the Eastern Seaboard

In those days, the United States had several shipyards in Virginia, Massachusetts, New York, and Pennsylvania. Construction began in 1941. The first of the class, the USS Essex, had its keel laid after Pearl Harbor. By 1942, five other Essex-class carriers were being built. 

Propulsion System Was Top-Notch

Several design improvements were used in the ship’s engine rooms. Steam turbines were implemented instead of the turbo-electric designs of Langley and the Lexington-class. There would be four boiler rooms and two engine rooms located at the center of the ship. Each boiler room had two Babcock and Wilcox boilers burning at 850°F. The engines were Westinghouse steam turbines with low-pressure and high-pressure turbines affixed to double-reduction gears. This enabled 15 to 20,000 nautical miles of range with a speed of 15 knots.

The Carriers Had Early Sensors

The Essex-class would have early types of shipborne radar for tracking enemy ships and aircraft. It could carry 1,600 tons of munitions. Armaments included eight five-inch dual-purpose guns, thirty-two 40mm Bofors anti-aircraft guns, and 46 Oerlikon anti-aircraft guns. 

Essex-class Served All Over the Pacific

The Essex-class was busy during the Philippines, Okinawa, and Iwo Jima campaigns. The carriers often launched all their airplanes for attacks to soften the beach landings and to conduct close air support for the marines fighting on the ground. Enemy airplanes, especially the occasional Japanese bomber that made it through the defenses, and the kamikaze pilots, took their toll and caused damage, but no sinkings occurred. 

Sea Stories About the Oriskany: A Personal Story 

The last of the Essex-class was the USS Oriskany made famous by one of its pilots, John McCain, who was shot down and taken prisoner in 1967. The Oriskany made multiple tours in the Vietnam War. My father-in-law Eddie Sanchez served on the Oriskany toward the end of the war as a flight deck crewman. The Oriskany was performing numerous sorties around the clock in those days. I asked Sanchez if he worked on the flight deck for 24 hours and 24-hours off to rest up. He said, “We worked 48 hours straight and only about 10 to 12 hours to rest after each rotation. Then it was back on the flight deck. Countless airplanes landed and took off. I remember constant action.” The duty was dangerous. Sanchez once saw a sailor cut in half with a broken arrestor wire whipped across the deck. Some sailors were lost overboard due to various accidents. 

The End of Duty

The Essex-carriers were decommissioned in the 1970s. USS Lexington became a training carrier in Pensacola, Florida, and was finally taken out of service in 1991. Now USS Lexington and her sister ships USS Yorktown, USS Intrepid, and USS Hornet are preserved as four of the five aircraft carrier museum ships in the United States.

Naval aviation would never have dominated the air without the Essex-class. The carriers served with distinction, from World War Two, until the Vietnam War. The battles were dangerous as the capital ships provided the Japanese with large targets to hit. And the Oriskany proved it could hold its own in battle during Vietnam. The Essex leaves a proud legacy of combat and shipbuilding prowess with innovative design. It would be difficult to imagine today’s industrial base building that many carriers in such a short amount of time. 

Essex-Class Photo Essay


Seven aerial photographs showing the major different modernizations of the U.S. Navy Essex-class aircaft carriers (l-r): USS Franklin (CV-13), a “short hull” type as delivered, 21 February 1944. Franklin, USS Bunker Hill (CV-17), USS Boxer (CV-21), USS Princeton (CV-37), USS Tarawa (CV-40), USS Valley Forge (CV-45) and USS Philippine Sea (CV-47) received no or little modernization. USS Wasp (CV-18), after her SCB-27A conversion in late 1951: new hydraulic catapults, new island, removal of the deck guns, new bow. Modernized as such were USS Essex (CV-9), USS Yorktown (CV-10), USS Hornet (CV-12), USS Randolph (CV-15), Wasp, USS Bennington (CV-20), USS Kearsarge (CV-33) and USS Lake Champlain (CV-39). USS Oriskany (CV-34) was completed as such. USS Hancock (CV-19) after her SCB-27C modernization, circa 1955: like SCB-27A but new steam catapults and relocation of the aft elevator to the deck edge. USS Intrepid (CV-11) and USS Ticonderoga (CV-14) also received SCB-27C. USS Antietam (CV-36) after the installation of an experimental angled deck, circa 1954. USS Bennington (CV-20) after SCB-125: enclosed hurricane bow, angled deck, starboard deckedge elevator. USS Essex (CV-9), USS Yorktown (CV-10), USS Hornet (CV-12), USS Randolph (CV-15), Wasp, USS Bennington (CV-20) and USS Kearsarge (CV-33) received SCB-125. USS Hancock (CV-19) after SCB-125 in April 1957. The three SCB-27C ships were modernized as such an had the starboard deckedge elevator located further aft. The forward elevator was enlarged. USS Oriskany (CV-34) received SCB-125A, here on 30 May 1974. Similar to SCB-27C/SCB-125, only the starboard deckedge elevator was located further forward, as with the SCB-27A/SCB-125 ships. USS Lexington (CV-16), USS Bon Homme Richard (CV-31) and USS Shangri-La (CV-38) received SCB-27C/SCB-125 in one refit but had the starboard elevator in the same position as Oriskany.

Essex-Class Aircraft Carrier

The U.S. Navy aircraft carrier USS Philippine Sea (CVA-47) makes a sharp turn to starboard, while steaming in the Western Pacific with the U.S. Seventh Fleet, 9 July 1955. Philippine Sea, with assigned Air Task Group 2 (ATG-2), was deployed to the Western Pacific from 1 April to 23 November 1955.


Essex-class. Image Credit: US Navy Archives.


Seven aerial photographs showing the major different modernizations of the U.S. Navy Essex-class aircraft carriers

5 Most Lethal Warships Ever to Sail

Essex-class Aircraft Carrier. Image: Creative Commons.


USS Wasp. Image: Creative Commons.


USS Wasp. Image: Creative Commons.

Expert Biography: Serving as 1945’s Defense and National Security Editor, Dr. Brent M. Eastwood is the author of Humans, Machines, and Data: Future Trends in Warfare. He is an Emerging Threats expert and former U.S. Army Infantry officer. You can follow him on Twitter @BMEastwood. He holds a Ph.D. in Political Science and Foreign Policy/ International Relations.

Written By

Now serving as 1945s New Defense and National Security Editor, Brent M. Eastwood, PhD, is the author of Humans, Machines, and Data: Future Trends in Warfare. He is an Emerging Threats expert and former U.S. Army Infantry officer.