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Vertical launching system

A vertical launching system (VLS) is a fixed, vertical storage and firing mechanism integrated into the decks of modern naval warships, enabling the rapid, all-aspect launch of multiple types without the need for trainable rails or ship maneuvering for alignment. Developed to replace older arm-launch systems, VLS provides secure, environmentally controlled below-deck storage for , along with electrical interfaces for pre-launch programming via the vessel's fire control systems, thereby enhancing engagement speed and coverage for anti-air, anti-submarine, defense, and land-attack missions. The most prominent VLS in service is the U.S. Navy's Mark 41 VLS (Mk 41), manufactured by Lockheed Martin and achieving initial operational capability in 1986 on the Ticonderoga-class cruiser USS Bunker Hill (CG-52). Over 180 Mk 41 systems have been acquired by the U.S. Navy, with an additional 54 supplied to allied navies in 11 countries, and it is deployed on platforms including the Ticonderoga-class cruisers and Arleigh Burke-class destroyers. The Mk 41 supports a diverse array of missiles, such as the Standard Missile (SM-2, SM-3, SM-6) family for air and ballistic missile defense, the Tomahawk land-attack cruise missile, the Vertical Launch Anti-Submarine Rocket (VLA) for underwater threats, and the Evolved SeaSparrow Missile (ESSM) for close-in defense, with ongoing integration of advanced variants like the SM-6. Key advantages of VLS technology include a launch success rate exceeding 99%—demonstrated through more than 4,200 firings in combat operations such as Operation Desert Storm, , Operation Iraqi Freedom, and —and the ability to mix missile loads in individual cells for mission flexibility. Unlike legacy rail launchers, VLS reduces reload times, minimizes topside weight and vulnerability, and allows for 360-degree firing envelopes, significantly boosting a ship's and survivability in high-threat environments. Later developments include the Mark 57 VLS (Mk 57), a larger, more modular successor designed specifically for the (DDG-1000), featuring peripheral placement along the hull for reduced magazine vulnerability and compatibility with oversized missiles up to 25 inches in diameter. The Mk 57 achieved its first live-fire test in October 2020 aboard , launching a Standard Missile-2, and supports enhanced power and cooling for future hypersonic and directed-energy integrations. Ongoing U.S. efforts focus on at-sea reloading capabilities, including a successful demonstration of the Transferable Rearming Mechanism (TRAM) in October 2024 aboard (CG-65), and upgrades to both Mk 41 and Mk 57 systems to counter evolving threats, including ballistic missiles and unmanned systems.

Fundamentals

Definition and principles

A vertical launching system (VLS) is a modular missile launch platform designed for surface ships, , or land-based installations, featuring an array of vertical cells or canisters integrated into the deck or structure to enable the vertical ejection and subsequent flight of surface-to-air or surface-to-surface . These systems replace traditional angled or rail launchers by storing in a ready-to-fire within sealed canisters, allowing for rapid deployment without the need for mechanical alignment prior to launch. The design emphasizes commonality across missile types, with standard canisters accommodating various payloads in a grid-like module, typically arranged in groups of eight cells for efficient space utilization on . The operational principles of a VLS revolve around the integration of storage, loading, and firing within the same vertical orientation, where missiles remain in their cells until selected for launch by the ship's . Loading occurs through deck hatches or dedicated elevators that lower canisters into position, after which cells are sealed to maintain and readiness. Upon initiation, the launch sequence propels the upward using gas generators or rocket motors, with exhaust directed through integrated vents or weather shields to deflect the plume away from the platform and adjacent cells, preventing structural damage or interference. This process supports high-volume fire rates, as multiple cells can be armed and fired in rapid succession under centralized command. VLS employs either hot launch, where ignition occurs inside the cell, or cold launch, where the is ejected inertially before engine startup, depending on the specific system variant. Fundamentally, the vertical orientation of VLS exploits basic aerodynamic and kinematic principles to provide coverage, as missiles exit straight upward and acquire their trajectory via onboard guidance shortly after launch, eliminating the mechanical complexity and limited firing arcs of rotating turrets or fixed launchers. This approach reduces moving parts, enhances reliability, and allows for a modular architecture where adjacent cells can house dissimilar missiles—such as anti-air, anti-submarine, or land-attack types—without requiring platform reconfiguration or shared infrastructure adjustments. The resulting system achieves a balance of and , with the grid configuration distributing launch points to minimize vulnerability from a single hit.

Advantages and disadvantages

Vertical launching systems (VLS) offer substantial operational advantages over traditional , primarily through flexibility and in deployment. A core benefit is the capacity to store and launch diverse missile types—such as anti-air warfare (AAW), (ASUW), and (ASW) munitions—within identical cells, enabling commanders to mix loadouts for specific missions and adjust configurations during port calls without structural alterations. This multi-role capability supports versatile naval operations, from air defense to missions, in a single system. VLS provides omnidirectional firing with full 360-degree coverage, eliminating the need for ship turns to align arm launchers and thereby accelerating engagements against threats from any bearing. The below-deck, modular design occupies less topside space than arm systems, freeing area for sensors or other while improving . Additionally, compartmentalized s enhance by isolating potential failures or , such as a ignition in one , to prevent chain reactions across the magazine. These systems also reduce maintenance demands, as missiles remain in constant ready status without the mechanical cycling required by arm launchers. However, VLS presents significant drawbacks in cost, , and vulnerability. The advanced and requirements result in high upfront acquisition and lifecycle costs, posing challenges for budget-constrained fleets seeking widespread adoption. Traditionally, VLS systems could not be reloaded at sea due to the fixed, below-deck canisters; however, as of 2025, the U.S. Navy has developed and demonstrated at-sea reloading capabilities using specialized . Hot-launch configurations risk deck scorching from exhaust plumes and catastrophic failures during "restrained firings," where a ignites but fails to clear the cell, potentially damaging adjacent structure. Moreover, compatibility is restricted to missiles engineered for vertical storage, excluding certain angled or rail-specific designs. Tactically, VLS excels in dynamic environments by supporting rapid salvo launches, where multiple missiles can be fired in sequence to overwhelm defenses through tactics, a capability less feasible with slower arm systems. This design yields superior reaction times compared to twin-arm launchers like the Mk 26, enabling quicker responses to salvos or pop-up . Overall, while VLS boosts projection and readiness, its logistical constraints demand careful planning for sustained naval campaigns.

Development History

Origins in the Cold War era

The development of vertical launching systems (VLS) for naval applications emerged during the as a response to escalating threats from Soviet air and missile forces, with initial concepts focusing on rapid missile deployment for surface-to-air defense. In the , experiments with vertical launch configurations for surface-to-air missiles (SAMs) began as early as the late 1950s and continued into the 1960s, driven by the need for quicker reaction times in air defense systems amid the arms race. Meanwhile, the US Navy expressed interest in vertical launch technologies during the 1960s, particularly during the era, where the demand for fast anti-aircraft responses against low-flying threats highlighted the limitations of traditional rail and arm launchers. These early ideas laid the groundwork for integrating VLS into shipboard platforms to enable all-aspect missile firing without repositioning. Key advancements accelerated in the 1970s through the US Navy's program, which sought to replace older arm launchers like the Mk 10 and Mk 26 with a more versatile VLS to support defense (BMD) and multi-mission capabilities against Soviet and submarine-launched threats. The initiative, originating in the late 1960s but maturing in the 1970s, prioritized VLS for its ability to store and launch missiles vertically from below-deck canisters, reducing topside clutter and improving survivability. Prototype testing of the Mk 41 VLS occurred in the early 1980s, with initial tests in 1983, addressing integration challenges with radar and fire control systems, with initial deliveries beginning in 1985. The , including Soviet advancements in anti-ship missiles, underscored the need for such systems to maintain naval superiority in high-threat environments. The first operational deployment of the Mk 41 VLS came in 1986 aboard USS Bunker Hill (CG-52), the sixth Ticonderoga-class cruiser, marking the transition from experimental to fleet-wide use and enabling hot launch operations for Standard missiles in Aegis-equipped vessels. Parallel efforts within NATO saw the United Kingdom and France initiating VLS research in the early 1990s to counter similar Soviet threats, laying the foundation for collaborative systems like the Principal Anti-Air Missile System (PAAMS). Technical hurdles, such as managing rocket exhaust plumes to prevent damage to the ship or adjacent cells, were overcome through innovative designs including common exhaust plenums and deflector mechanisms that directed gases away from the deck. These solutions were critical for the hot launch method, which became predominant in early VLS implementations, ensuring reliable performance in the intense operational tempo of Cold War naval confrontations.

Modern evolution and proliferation

Following the end of the , vertical launching systems (VLS) evolved to emphasize multi-role capabilities, particularly for addressing emerging regional threats such as hypersonic weapons and proliferation. In the , designs shifted toward modular architectures that supported a broader spectrum of munitions, enabling defenses against advanced aerial threats while maintaining offensive strike options. The upgraded its Mk 41 VLS to integrate the Tomahawk Block IV missile, introduced in the early , which featured enhanced network-centric capabilities for and retargeting during flight. Proliferation of VLS technology accelerated through exports and independent developments, strengthening allied navies and rival capabilities. The U.S. exported Mk 41 systems and compatible munitions to partners including and , integrating them into Aegis-equipped destroyers for enhanced interoperability in regional security operations. In , independently advanced its VLS infrastructure with the HHQ-9 system, entering service in 2004 aboard Type 052C destroyers using sextuple VLS launchers derived from indigenous designs. Technological evolutions in the focused on improving operational and connectivity. A shift toward cold-launch mechanisms gained traction, where missiles are ejected from canisters using compressed gas before igniting externally, reducing signatures and damage to the launching platform for stealthier operations in contested environments. Concurrently, integration with networked warfare systems like the (CEC) enabled real-time sensor data sharing across platforms, allowing coordinated VLS firings from Mk 41 cells without local . In the 2010s, VLS adoption extended to smaller vessels, including upgrades to U.S. Littoral Combat Ships () for modular strike packages, though initial designs prioritized over-the-horizon missiles over full VLS integration. By the 2020s, emphasis grew on hybrid systems combining VLS with directed-energy weapons, such as high-energy lasers on platforms, to provide scalable defenses against drone swarms and hypersonic threats. In 2024, the U.S. Navy achieved a milestone with the first at-sea reloading of Mk 41 VLS cells, improving reload capabilities in contested environments. As of early 2025, global VLS inventories across major navies exceed 13,000 cells, driven by U.S. (approximately 9,000 cells) and Chinese (over 4,300 cells) expansions.

Launch Technologies

Hot launch

In a hot launch for vertical launching systems (VLS), the 's rocket motor ignites directly within the launch cell, producing immediate that propels the upward and out of the canister vertically. This process eliminates the need for a separate ejection , as the rocket's provides the necessary for departure, enabling rapid response times. The resulting exhaust gases, reaching temperatures exceeding 2,000 °F (1,100 °C), are captured at the base of the cell and routed through a shared shared among multiple cells in the . Engineering considerations for hot launch focus on managing the intense and to protect the launch module, ship structure, and adjacent missiles. Exhaust management relies on a common system with components such as an closure plate to seal the cell bottom, a perforated to direct gases horizontally into the plenum, and a raised sill to prevent , ultimately venting the plume upward through an uptake trunk to the atmosphere above the . High-temperature materials, including and ablative coatings, line the cell interiors to withstand thermal loads and from the supersonic exhaust plume, which can generate significant overpressures. A water deluge system sprays into the cells during loading and maintenance to cool surfaces and mitigate risks of premature ignition or residual damage. Plume effects, including waves and particulate , are controlled by module design features like symmetric gas flow paths that minimize intrusion into neighboring cells, thereby reducing potential structural stress on the ship. Hot launch is particularly suited to missiles requiring high initial thrust for quick acceleration, such as anti-air warfare systems like the RIM-66 Standard Missile-2 (SM-2) and RIM-174 Standard Missile-6 (SM-6), as well as cruise missiles like the BGM-109 , which benefit from immediate motor burn for trajectory control post-ejection. It became the standard configuration in early iterations of the U.S. Navy's Mk 41 VLS, introduced in the 1980s on Ticonderoga-class cruisers and Arleigh Burke-class destroyers, where it supports multi-mission operations including surface and subsurface threats. This method offers superior engagement speed compared to alternatives, allowing near-instantaneous missile release without pre-ejection gas generation. Key limitations of hot launch, such as blast overpressure and thermal exposure to the deck and nearby cells, are addressed through strategic cell spacing—typically 0.6 meters center-to-center in Mk 41 modules—and reinforced uptake venting to dissipate energy away from the hull. These measures ensure operational reliability in salvo launches, with the system's design validated through extensive naval testing to handle sequential firings without compromising adjacent canisters. Unlike cold launch methods that prioritize reduced infrared signatures, hot launch emphasizes simplicity and velocity for high-threat environments.

Cold launch

In cold launch vertical launching systems, the missile is ejected from its canister using compressed inert gas, such as nitrogen or air, sourced from high-pressure reservoirs integrated into the pneumatic ejection mechanism. This process propels the missile to a height of approximately 20 to 50 meters above the deck without igniting the rocket motor inside the cell, thereby avoiding any combustion within the confined launch environment. Once airborne and clear of the platform, the missile's solid rocket motor ignites to achieve full propulsion, ensuring a controlled ascent and initial trajectory. The engineering of cold launch systems relies on robust pneumatic components, including gas generators or pressurized reservoirs that provide the necessary ejection force, typically without producing hot exhaust. During the ejection phase, the maintains through deployable fins or surfaces that counteract aerodynamic disturbances as it rises vertically. These systems are employed in platforms like the French , where the design prioritizes compatibility with diverse missile types while minimizing structural wear. Cold launch is particularly suited for submarines and stealth-oriented surface ships, such as the U.S. Navy's Virginia-class attack submarines, due to the constrained internal spaces and the need to preserve acoustic and thermal discretion during operations. It also facilitates the use of smaller cell sizes, allowing integration of (ASW) torpedoes or compact munitions alongside missiles. In these applications, the system enables submerged or low-signature launches, enhancing survivability in high-threat environments. Key advantages include significantly reduced on the launcher structure, as no exhaust contacts the interior, thereby extending and simplifying maintenance compared to hot launch methods. The absence of in-cell ignition also lowers the , aiding by minimizing detectable heat plumes during ejection. Additionally, cold launch offers higher reliability in enclosed or sensitive platforms, such as hulls, by mitigating risks of fire or in confined areas.

Advanced variants

Advanced variants of vertical launching systems (VLS) build on foundational and methods by introducing designs that enhance , compatibility across missile types, and adaptability to emerging threats. These innovations prioritize flexibility in launch profiles while minimizing structural impacts on host platforms, such as reduced backblast or improved with diverse payloads. A prominent example is the concentric canister launch (CCL) system, which employs an inner canister to house the and an outer canister for pressurized gas or to facilitate ejection. This configuration enables seamless switching between and launch modes within the same VLS cells, accommodating both boost-phase ignition and gas-ejection requirements without dedicated infrastructure changes. China's utilizes CCL in its universal VLS, allowing the platform to fire a mix of anti-air, anti-ship, and land-attack missiles with either method, thereby increasing tactical versatility. The CCL approach, originally pioneered by the U.S. Navy for the Mk 41 VLS in the , has been refined in modern iterations to support higher cell densities and reduced maintenance. Hybrid launch systems further advance this flexibility by merging and principles to provide adjustable thrust during initial ejection and boost phases. In these setups, a propels the missile clear of the canister using external gas, followed by in-flight ignition of the solid rocket motor, which mitigates exhaust damage to the VLS while preserving full propulsion efficiency. Such hybrids are particularly suited for variable-threat environments requiring rapid reconfiguration. The Extensible Launching System (ExLS), developed for the U.S. Navy, exemplifies this by retrofitting existing hot-launch VLS cells—such as the Mk 41—for cold-launch compatibility, enabling the deployment of torpedoes, unmanned underwater vehicles, or next-generation without full system overhauls. In the 2020s, U.S. efforts have focused on next-generation launcher concepts to integrate hypersonic and modular payloads into VLS architectures, emphasizing scalability for distributed lethality. The Navy's modular missile program, initiated post-2020, develops interchangeable strike weapons that leverage VLS cells for rapid loading and firing of hypersonic glide vehicles, addressing gaps in long-range precision fires. Similarly, the U.S. Army's adoption of Mk 41-derived launchers in ground-based systems demonstrates this evolution, optimizing for multi-domain operations with reduced logistics footprints. These variants collectively expand VLS utility beyond traditional naval roles, supporting scenarios.

System Components

Canister and cell architecture

The vertical launching system (VLS) employs a modular -based architecture, where individual cylindrical s house missile canisters in a vertical orientation for rapid deployment. Each typically measures 21 inches (0.53 meters) in to accommodate standard missile diameters, with depths varying by configuration to support different payload sizes. VLS modules are categorized by length: strike-length s, approximately 7.6 meters deep, accommodate larger s such as the or variants for extended-range strikes; tactical-length s, around 6.7 meters deep, suit shorter-range interceptors like the Evolved SeaSparrow Missile (ESSM). These dimensions ensure compatibility across missile families while optimizing space on naval platforms. Canisters within cells are constructed from corrosion-resistant materials, primarily high-strength with protective coatings or composite reinforcements to withstand environments, including saltwater exposure and mechanical stresses. Internal surfaces feature ablative liners, such as polymer-based coatings, that erode sacrificially during hot launches to manage exhaust heat and gases, preserving structural integrity over multiple firings. Weatherproof hatches, typically made of lightweight alloys with seals, cover each cell to prevent environmental ingress like moisture or debris. Common configurations organize cells into 8-cell modules, as seen in the , where four cells form a square for efficient deck mounting and shared support structures. Quad-packing allows four smaller missiles, such as , within a single tactical-length cell using specialized canisters like the , effectively quadrupling capacity for point-defense scenarios without altering module footprint. Systems scale modularly, from single 8-cell units to arrays of up to 122 cells on larger vessels, enabling flexible loadouts. Modularity is achieved through bolt-on module designs, where self-contained 8-cell units connect via standardized interfaces for straightforward installation, removal, and upgrades during refits. Watertight seals and compartmentalization enhance underwater survivability, mitigating flood risks from battle damage by isolating compromised cells. This architecture supports both hot and cold launch technologies by providing exhaust venting paths while maintaining overall system reliability.

Integration with ship systems

The integration of vertical launching systems (VLS) with ship systems primarily occurs through interfaces that enable seamless coordination between the launcher, combat management, and support infrastructure. In platforms like U.S. Navy -equipped vessels, the VLS connects to the for fire control, where the radar provides target detection and illumination, feeding data to the Mk 99 director for precise guidance and automated launch sequencing. This linkage allows for rapid response, with the Mk 99 handling illumination for semi-active homing missiles and coordinating salvo fires across multiple cells. Power integration draws from the ship's to support VLS operations, typically requiring 440 VAC, 3-phase, 60 Hz for a single to drive valves, ignition systems, and control . Cooling systems are equally critical, incorporating ship's chilled or liquid cooling loops for in densely packed , alongside deluge mechanisms that connect to canisters for post-launch thermal management to prevent overheating. These provisions ensure reliable performance in high-heat environments, with requirements such as 17,000 BTU/hour per in compatible designs. Data links facilitate real-time monitoring of missile status, with VLS electronics communicating continuously with the ship's weapon to report inventory, readiness, and fault conditions during initial alignment and ongoing operations. Compatibility with tactical data networks like extends this integration, allowing VLS status and launch data to be shared across networked assets for cooperative engagements in joint operations. Maintenance features emphasize built-in diagnostics, including status monitoring ports that enable crew self-assessment and grooming without external tools, reducing downtime through onboard fault isolation. In advanced designs such as the ' Mk 57 VLS, provisions for remote reload arms support at-sea replenishment, integrating with crane systems to insert canisters vertically into modular cells while minimizing exposure.

Applications

Vertical launching systems (VLS) are integral to modern naval warships, enabling rapid deployment of missiles for diverse missions while optimizing deck space and survivability. On larger surface combatants like destroyers and cruisers, VLS arrays typically feature 90 or more cells to support multi-mission capabilities, including anti-air warfare, anti-submarine warfare, and land attack. For instance, the U.S. Navy's Arleigh Burke-class destroyers employ the Mk 41 VLS with 96 cells, allowing integration of missiles such as the Standard Missile family for area air defense, Tomahawk for strike warfare, and Vertical Launch Anti-Submarine Rockets (VLA) for underwater threats. Smaller vessels, such as frigates and corvettes, utilize more compact VLS configurations with 8 to 32 cells, prioritizing (ASW) and anti-air warfare (AAW) in littoral or escort roles. The Franco-Italian FREMM-class frigates, for example, incorporate the A50 VLS with 16 cells (two 8-cell modules) dedicated to 15/30 surface-to-air missiles for point and area defense. These systems enhance tactical flexibility by accommodating a mix of shorter-range effectors without compromising the ship's reduced and crew size. Submarines represent a specialized adaptation of VLS technology, where vertical tubes originally designed for submarine-launched ballistic missiles (SLBMs) are repurposed for cruise missile strikes. The U.S. Navy's Ohio-class guided-missile submarines (SSGNs), converted from SSBNs, feature 22 large vertical payload tubes fitted with multiple-all-up-round canisters (MACs) that enable up to 154 Tomahawk land-attack missiles, providing covert, long-range strike options from submerged positions. In tactical applications, VLS on primarily supports area air defense against and missiles, as well as strike warfare for precision targeting of land or sea assets, with the system's allowing rapid reconfiguration for emerging threats. By , VLS evolution includes preparations for hypersonic missile integration, such as the program, planned for integration and testing aboard Zumwalt-class destroyers (as of November ), to extend strike ranges beyond 1,000 nautical miles and counter advanced adversaries.

Land-based and aerial platforms

Vertical launching systems (VLS) adapted for land-based platforms provide mobile missile strike and defense capabilities, particularly for coastal defense and expeditionary operations where rapid repositioning is essential. The U.S. Army's system, also known as the , uses trailer-mounted 70 containerized VLS units to launch Standard Missile-6 (SM-6) interceptors and cruise missiles from ground locations, as demonstrated in exercises targeting maritime threats. Similarly, the U.S. Marine Corps developed an unmanned (JLTV)-based launcher integrating VLS for missiles, enabling distributed, mobile fires in support of naval campaigns until its development was terminated in mid-2025 due to integration challenges, though the U.S. Army plans to resurrect the concept for a live-fire test in 2026. Israel's system exemplifies land-based VLS mobility through truck-towed launchers, each containing up to 20 vertical cells for Tamir interceptors, allowing quick deployment and interception of short-range rockets with high success rates in dynamic battlefield conditions. These ground adaptations prioritize transportability, often using modular 8-cell units that can be mounted on standard trucks for efficient road movement and setup without specialized infrastructure. Aerial integrations of VLS remain rare and conceptual, emphasizing lightweight palletized or modular designs for deployment from to enable rapid, air-mobile missile strikes in remote areas. Related palletized launch programs, such as the U.S. Air Force's Rapid Dragon, utilize airdroppable pallets loaded with cruise missiles, such as the AGM-158 JASSM-ER, deployed from C-130 or C-17 Id="citation_id">20 aircraft via standard cargo procedures, transforming cargo planes into temporary standoff launch platforms for . Emerging mini-VLS concepts extend this to unmanned aerial vehicles, incorporating compact, composite-material launchers to deploy small precision-guided munitions or interceptors, enhancing swarm-based air-mobile operations. Overall, land-based and aerial VLS platforms support expeditionary roles by delivering flexible, transportable firepower for strikes and defense, with modular designs facilitating integration across diverse vehicles and aircraft.

Notable Systems

NATO and allied systems

The Mark 41 Vertical Launching System (Mk 41 VLS) serves as the cornerstone of missile launch capabilities for the United States Navy and numerous NATO allies and partners, enabling rapid deployment of multi-mission missiles from surface combatants. Developed jointly by Lockheed Martin and BAE Systems, it utilizes modular 8-cell units that can be configured in arrangements from 8 to 122 cells per installation, with strike-length variants accommodating missiles up to 21 inches in diameter and 236 inches long. The system supports hot launch operations across anti-air warfare, anti-submarine warfare, ballistic missile defense, and land-attack missions, firing weapons such as the RIM-162 ESSM (quad-packed in cells), RIM-66/67/161/174 Standard Missiles, RGM-109 Tomahawk, and RUM-139 ASROC. Over 4,200 missiles have been launched with a success rate exceeding 99%. As of 2025, it is deployed on platforms including 22 Ticonderoga-class cruisers (each with 122 cells) and over 75 Arleigh Burke-class destroyers (90 or 96 cells each). Exports to 11 allied nations include installations on over 20 ship classes, with more than 11,000 cells delivered worldwide. Variants of the Mk 41 span from Mod 0 (baseline tactical length) to Mod 16 (enhanced strike length for defense), with ongoing upgrades improving exhaust management and integration for future effectors like the SM-6 Block IB. Adopted by members including (Sachsen-class frigates with 32 cells), the (De Zeven Provinciën-class with 40 cells), (Fridtjof Nansen-class with 32 cells), and (Álvaro de Bazán-class with 48 cells), as well as partners such as (Hobart-class destroyers with 48 cells), (Atago-class destroyers with 96 Mk 41 cells configured as Kōkūkan-sōsa modules), (Sejong the Great-class with 128 cells), and (Anzac-class upgrades with 32 cells), the system has seen more than 11,000 cells delivered or on order across 19 ship classes in these fleets as of the early , with ongoing procurements continuing into 2025. The is integrating Mk 41 on its forthcoming Type 26 frigates (up to 48 cells) to standardize with allied operations, marking a shift from on its Type 45 destroyers. 's installations often pair Mk 41 with RIM-116 launchers for layered defense on platforms like the Brandenburg-class (16 cells). As of 2025, the has progressed integration of Mk 41 on Type 26 frigates (48 cells each), has doubled capacity on FDI frigates to 32 cells per ship, and has commissioned Mogami-class frigates with 32 Mk 41 cells. Collectively, and allied Mk 41 deployments account for thousands of cells, enhancing interoperability in joint task forces. The Sylver Vertical Launching System, produced by Naval Group, provides a complementary cold-launch alternative favored by several European NATO nations for its compatibility with Aster family missiles and compact design. Available in A43 (for 4.3-meter missiles), A50 (5-meter), and A70 (7-meter) variants, it features 8-cell modules with 22-inch diameter canisters, each module covering 6 square meters on deck and supporting up to 32 cells per ship in multi-module arrays. The cold-launch mechanism uses pressurized gas to eject the missile before ignition, reducing thermal stress on the launcher. Deployed on French Navy Horizon-class destroyers (48 A50 cells) and FREMM frigates (16-32 A50/A70 cells for Aster 15/30 and MdCN cruise missiles), Italian Navy equivalents (up to 48 cells), and UK Royal Navy Type 45 destroyers (48 A50 cells for Sea Viper/Aster 30), Sylver has also been exported to allies like Singapore (Formidable-class frigates with 32 A50 cells). More than 1,000 Sylver cells are in service or under contract, primarily enabling principal anti-air warfare in multinational exercises. Across and partner navies, these systems—totaling more than 12,000 Mk 41 cells plus over 1,000 cells as of 2025—underscore a focus on modular, interoperable architectures, with the U.S., , , , , , and operating the majority on over 150 warships. This distribution supports collective defense, with ongoing procurements like Japan's Mogami-class (Mk 41) and French FDI frigates ( A50) extending capabilities into the 2030s.

Systems in other nations

Russia has developed the UKSK (3S14) vertical launching system, a universal hot/cold launch platform designed to accommodate a range of missiles including the Kalibr family of cruise missiles and the Oniks (Yakhont) . This system features 16 to 80 cells depending on the platform, with Gorshkov-class frigates having 16-32 cells and upgraded Kirov-class battlecruisers equipped with 80 cells, and supports integration with hypersonic variants like the . It has been installed on Gorshkov-class frigates and upgraded Kirov-class battlecruisers, enhancing 's blue-water capabilities in contested environments. China's universal vertical launching systems (UVLS), featured on Type 052D Luyang III-class destroyers with 64 cells and Type 055 Renhai-class destroyers with up to 112 cells, employ a concentric canister design that enables both hot and cold launches for diverse payloads such as the and HHQ-9 . These systems allow for multi-role operations in (A2/AD) strategies. The scalability of these VLS contributes to the Navy's rapid expansion, with over 4,300 cells across surface combatants as of 2025. India's vertical launching systems integrate with advanced sensors like the MF-STAR radar on the Kolkata-class (Project 15A) destroyers, which employ a 16-cell universal vertical launcher module (UVLM) for supersonic cruise missiles. This indigenous design supports rapid salvo fires and has been extended to follow-on Visakhapatnam-class (Project 15B) destroyers. Iran has prototyped vertical launching systems on its Mowj-class (Moudge) frigates, equipping vessels like the Jamaran with 12-cell VLS for SS-N-27 (Oniks ) anti-ship missiles to bolster coastal defense and . Recent upgrades, such as on the , incorporate VLS for surface-to-air missiles, marking progress in indigenous multi-role capabilities. Brazil's emerging vertical launching systems are integrated into the Tamandaré-class frigates, featuring a 12-cell configuration for Sea Ceptor surface-to-air missiles to enhance air defense in littoral operations. These non-NATO systems emphasize A2/AD doctrines, with proliferation through exports such as Russian UKSK-derived to India's Talwar-class frigates, which include 8-cell VLS for Klub missiles. By 2025, non-Western navies collectively operate approximately 5,000 VLS cells, underscoring strategic diversification beyond alliance frameworks.

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