The Defense Architecture of the American Aircraft Carrier
By Yuval Eckhaus[1]
Keywords: Aircraft Carriers, Naval Power, Technology, Naval Missiles, Directed-Energy Weapons, AEGIS.
Since 1945, the United States has not lost a single aircraft carrier. Yet the threats confronting aircraft carriers today differ fundamentally from those faced by naval commanders eight decades ago. This insight examines the aircraft carrier as a strategic asset, the layered defense architecture developed to protect it, and the emerging threats that increasingly challenge its survivability and operational relevance.
Aircraft Carriers as a Strategic Asset
United States aircraft carriers constitute the spearhead of American naval power and remain among the most visible symbols of US global hegemony since the end of World War II. Beyond their military role, they also project political influence and strategic prestige. Aircraft carriers serve as the central and most important vessels of the fleet (capital ships), while simultaneously functioning as command platforms for the Carrier Strike Groups (CSGs) that accompany them. They enable the United States to deploy military force rapidly and effectively for both combat operations and deterrence missions across nearly every theater of the globe.
Each of the US Navy’s 11 active nuclear-powered aircraft carriers effectively functions as a floating airbase. A typical carrier embarks around 80 aircraft, including fighter and strike aircraft, helicopters, airborne early warning and control (AEW&C) platforms, and transport aircraft. Depending on the class and configuration, the crew numbers are between 4,500 and 6,000 personnel. The Carrier Air Wing (CVW) is capable of establishing air superiority and conducting long-range strike operations hundreds of kilometers from the carrier, with aerial refueling capabilities extending this operational reach even further. At the same time, the construction and maintenance of these formidable platforms impose a substantial financial burden on the US Navy. The construction cost of a single new-generation aircraft carrier is estimated at approximately $13 billion, while annual maintenance costs exceed $1 billion per vessel.
The immense size of an aircraft carrier (CV), its relatively high speed, and surprising maneuverability, combined with its armored hull featuring separated watertight compartments and redundant propulsion and operational systems, reduce the likelihood that a single missile strike could sink such a ship. However, even a CV is not entirely immune to sinking. During World War II, American aircraft carriers were sunk in various instances by aerial attacks, suicide planes (kamikaze), and submarine torpedo strikes. The primary danger currently facing a CV is a coordinated, combined attack using diverse types of weapons. Such an attack would saturate the maritime battlefield, making it difficult for defense systems to eliminate all simultaneous threats.
The Changing Threat Landscape: From Hypersonic Missiles to UAV Swarms
Their strategic value, immense power, prestige, and tremendous cost make aircraft carriers top-priority targets for adversary forces. Technological developments and the return to great power competition present aircraft carriers with new and significant threats. Alongside traditional threats from the past, such as enemy aircraft attacks, anti-ship missiles from surface vessels, and torpedoes, modern threats have evolved in recent years, including hypersonic missiles and anti-ship ballistic missiles. While hypersonic cruise missiles, like the Russian “Zircon”, challenge detection and defense systems with their high speed and flat trajectory, ballistic missiles like the Chinese DF-21D and DF-26 maneuver upon atmospheric reentry, complicating their interception due to their speed and maneuverability. UAV swarms pose additional significant threats. Although they lack the destructive power to sink a vessel of this magnitude, they can overwhelm and saturate detection and defense systems, leading to the depletion of expensive ammunition, thereby exposing the aircraft carriers to missile or enemy aircraft strikes.
The Multi-Layered Defense of the American Aircraft Carrier
An aircraft carrier requires defensive solutions across three dimensions: defense against aerial attacks, defense against enemy surface ships, and subsurface defense against modern, silent running submarines launching fast and powerful modern torpedoes. An aircraft carrier does not operate as a lone vessel at sea, but rather as the centerpiece of a task force or a Carrier Strike Group (CSG). The CSG consists of a large number of various vessels, some being combat ships and others auxiliary vessels for supply and logistics. Each combat vessel plays a role in defending both the aircraft carrier and the rest of the force. This creates a system comprising multiple multi-layered and multi-dimensional defensive rings at varying distances—in the air, on the surface, and underwater. A typical strike group includes a Guided Missile Cruiser, which serves as the air defense command center for the entire force. Additionally, destroyers specializing in anti-submarine warfare (ASW) and anti-missile warfare sail alongside the force. Attack submarines are also typically attached to the group, tasked with monitoring the underwater domain, as well as attacking and destroying enemy submarines and threats emerging from this vector.
The outer defensive ring begins hundreds of kilometers from the CV and is based on E-2D Hawkeye early warning aircraft (an advanced model of the “Daya” aircraft that also operated in the Israeli Air Force). Their role is to detect threats and dispatch F/A-18 or F-35C fighter jets to neutralize these threats before they approach or launch their munitions. The middle defensive ring, deployed tens of kilometers around the CV, is managed by the cruisers and destroyers. These vessels possess sophisticated AEGIS radar, command, and fire-control systems, along with SM-6, SM-3, and SM-2 long-range missiles for intercepting missiles and aircraft.
The inner ring consists of point defense systems installed on the CV itself. It includes RAM and ESSM medium- and short-range interceptor missiles, and the Phalanx CIWS anti-missile gun system (which was previously deployed on Israeli Navy missile boats). Additionally, it features aerial and underwater decoys and countermeasures, integrated with electronic warfare (EW) systems to deceive attacking weapons.
Another area under development for close-range defense is directed-energy weapons (laser and microwave). These are intended to intercept and destroy missiles that have slipped through the outer defense arrays, as well as to address UAV swarms that could overwhelm defense systems and deplete defensive munition stockpiles. An additional goal of these developments is to reduce interception costs and alter the current asymmetric economic equation, where million-dollar missiles are used to intercept cheap UAVs. Initial laser systems (HELIOS, ODIN), designed to blind the sensors of attacking threats or physically destroy them, have already begun entering service on naval vessels. Initial testing of the microwave system (METEOR), tasked with burning from within and disabling the electronics of an attacking missile, is scheduled to begin in 2026.
Technology, Command and Control (C2) Systems
Managing such a complex system of defensive rings at varying distances, against multiple simultaneous threats across different dimensions, requires exceptionally high command and control (C2) capabilities. To achieve this, the Navy utilizes the AEGIS system, which serves as the “brain” of American naval defense. Connected to all vessels in the force via a single data network, the system integrates capabilities for detecting, tracking, and acquiring over 100 targets simultaneously. Concurrently, the system is responsible for selecting and guiding the appropriate weapon to address a threat. It utilizes artificial intelligence to allocate targets to the most relevant vessel or aircraft for rapid interception. The use of the Naval Integrated Fire Control-Counter Air (NIFC-CA) architecture enables one ship to fire a missile at a target not detected by its own sensors. Instead, it relies on data from another ship, an F-35, or an E-2D aircraft located far ahead. The strategic significance of this capability is far-reaching, as it extends the interception range beyond the ship's radar horizon. This capability is vital against low-flying cruise missiles and hypersonic missiles at varying altitudes. Anti-submarine warfare (ASW) defense is similarly bolstered by the simultaneous use of detection systems from multiple ships, combined with ASW helicopters, and, when necessary, countermeasures.
In the modern battlefield, defense, and electronic warfare (EW) systems are no less critical than kinetic ones. Indeed, ships are equipped with passive EW systems to detect enemy device emissions, and active systems to jam enemy radars and deceive missiles launched against the force. The extensive connectivity required among the strike group's vessels to synchronize information systems, maintain a common maritime picture, share the threat picture, and allocate targets exposes the entire force to cyber warfare threats. The objective of such cyberattacks is, among other things, to disrupt connectivity and impair the integrated battle management capability, especially during critical moments. Consequently, exceptionally robust cyber defense is required, which is essential for maintaining the continuity of command and C2 systems.
The Navy's New Operational Doctrine
The Navy's operational doctrine has required adjustments in response to technological developments and the new threats accompanying them. Instead of the Carrier Strike Group (CSG) moving in a relatively concentrated formation, the Navy developed Distributed Maritime Operations (DMO). In this approach, escort ships are spread across a vast area, all connected via a single data network. Dispersing the force is intended to make it difficult for the enemy to locate the CV while simultaneously expanding the coverage of the defensive rings. Movement is accompanied by strict emission control (EMCON) policies aimed at complicating the enemy's signals intelligence (SIGINT) efforts to track the force's components. Additionally, extending the range of fighter jets through aerial refueling by other aircraft and UAVs contributes to keeping the CV out of immediate danger.
This force structure—distributed in its movement yet interconnected through its operational picture—also generates greater redundancy. Consequently, damage to one ship does not disable the defensive capabilities of the entire force. It also enables more efficient utilization of combat power, as the platform detecting the threat can direct another platform that is in a better position to engage it.
The Never-Ending Race: Will Aircraft Carriers Remain Dominant in the Future?
The immense military capabilities of aircraft carriers, combined with the political influence and prestige they project, continue to drive major naval powers—primarily the United States—to rely heavily on them. Ongoing geopolitical tensions across multiple theaters, from the Indo-Pacific and the Arabian Sea to the war in Ukraine, suggest that aircraft carriers and their accompanying strike groups will remain extensively deployed and operationally central in the years ahead.
However, these very characteristics also make aircraft carriers prime targets for attack and destruction. Critics view them as extraordinarily expensive platforms whose utility is increasingly undermined by emerging threats, particularly hypersonic and ballistic missiles, as well as advanced underwater systems. Proponents, however, argue the opposite, maintaining that the aircraft carrier will remain the dominant naval combat platform for the foreseeable future. Former Chief of Naval Operations Admiral John Richardson even argued that the defense systems surrounding a CV make it “the most survivable military airfield” in existence.
Even if such assessments may appear overly optimistic, the defense of an aircraft carrier is undeniably a continuous race between increasingly sophisticated strike capabilities and the defensive technologies designed to neutralize them. The integration of multilayered defense architectures with advanced technological developments—including directed-energy weapons, enhanced command-and-control systems, electronic warfare, and long-range interception capabilities—allows this massive and highly powerful platform to retain its operational relevance and strategic value. Although CVs benefit from mobility and relatively high speed, enabling them to traverse more than a thousand kilometers per day, the decisive factors in preserving their naval superiority will increasingly be the speed of data processing, sensor fusion, and the ability to intercept threats at long range before they penetrate the carrier strike group’s defensive perimeter.
[1]Yuval Eckhaus's research examines the integration of air systems into maritime operations and its implications for how forces are built and employed.. He holds a B.A. in International Relations from the Hebrew University and an M.A. in Security Studies from Tel Aviv University. He previously served as a naval officer in the Israeli Navy. To quote this insight: Eckhaus, Y (2026, May). The Defense Architecture of the American Aircraft Carrier (Elrom Aerial Insight 3/2026). Elrom Center for Air and Space Studies.