(DEFENCE SECURITY ASIA) — Taiwan’s land-based Hsiung Feng III supersonic anti-ship missile helped sink the decommissioned frigate Lan Yang on September 18, transforming a precision-weapons exercise into a full-scale demonstration of how Taipei intends to contest hostile naval operations near the island.

The strike concluded the three-day Joint Armed Forces Precision Munition Live-Fire Exercise at Jiupeng Base in Pingtung, where the former warship provided a realistic target for testing Taiwan’s expanding network of coastal missiles, surface combatants, aircraft, rockets and attack drones.

Modelled on a United States RIMPAC-style sinking exercise, the event subjected a full-sized frigate hull to coordinated anti-ship attacks, allowing commanders to assess weapon effects, firing sequences and cross-service integration under conditions more demanding than routine range trials.

Presidential Office footage showed multiple impacts producing large explosions, fire and smoke aboard Lan Yang, while the concentration of weapons against one target illustrated the saturation tactics Taiwan could employ to overload layered naval air-defence systems during a cross-strait conflict.

President Lai Ching-te inspected the final morning as land-based and ship-launched Hsiung Feng II and III missiles, extended-range HF-3 weapons, Harpoons, Mavericks, HIMARS rockets, Tien Kung III interceptors and land-based Sky Sword II missiles participated across the exercise.

Attack drones, including ALTIUS 600M, Switchblade and indigenous systems, entered Taiwan’s joint live-fire architecture together for the first time, indicating that inexpensive loitering weapons may increasingly supplement premium missiles by scouting, distracting defences and attacking exposed maritime targets.

The Coast Guard’s Anping-class patrol ship Qijin also fired an HF-3 and recorded a hit, underscoring Taiwan’s wartime conversion concept in which constabulary vessels can become missile-bearing combatants, widening the number of launch axes confronting an approaching naval force.

Although the exercise demonstrated destructive firepower against an uncrewed and undefended hull, it did not replicate electronic warfare, interceptor missiles, close-in weapon systems, deception measures or counterstrikes that would shape missile effectiveness against an operational Chinese naval formation.

Nevertheless, the sinking provided rare visible evidence of Taiwan’s distributed maritime-denial strategy, which seeks to combine mobile coastal launchers, missile-armed ships, combat aircraft, drones and external sensors into a resilient kill chain capable of generating convergent salvos.

The HF-3’s ramjet-powered supersonic flight compresses the interval between detection and impact, while its sea-skimming profile and high-G terminal weaving are designed to complicate tracking and engagement by shipboard radars, surface-to-air missiles and close-in defensive guns.

For Beijing, the signal extends beyond a single missile strike because the exercise displayed an increasingly diverse launcher network able to disperse, survive and attack from different directions, raising the potential cost and operational complexity of blockade or amphibious operations.

For Taipei, however, the central challenge remains converting spectacular live-fire results into a dependable wartime system, because long-range missiles require persistent targeting, trained crews, secure communications, rapid logistics and survivable command nodes before destructive potential becomes sustained combat power.

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HF-3 Speed, Warhead and Terminal Manoeuvres Reshape Ship Defence

Developed by the National Chung-Shan Institute of Science and Technology, the Hsiung Feng III is Taiwan’s first operational ramjet-powered anti-ship missile and the third generation of a domestic weapons family central to the island’s maritime-denial posture.

Work on ramjet technology began in 1994, prototype flight testing followed in 1997, and development and operational evaluation concluded during 2004–2005 aboard ROCS Cheng Kung before the missile’s public unveiling at Taiwan’s October 2007 National Day parade.

The standard missile measures approximately 6.1 metres, carries a reported launch weight between 1,400 and 1,500 kilograms, and combines a solid-fuel main booster with two side boosters before a liquid-fuel integrated rocket ramjet sustains supersonic cruise.

Reported speeds between Mach 2.5 and Mach 3.5 sharply reduce reaction time once the missile crosses a defender’s radar horizon, creating a demanding engagement sequence in which detection, classification, interceptor launch and terminal defence must occur within compressed intervals.

Its standard range is officially described as exceeding 100 kilometres and commonly reported near 150 kilometres, while inertial mid-course guidance and an active-radar terminal seeker with electronic counter-countermeasures support autonomous homing during the final approach.

The missile’s sea-skimming profile, reportedly spanning approximately 10 to 250 metres depending on flight phase, combines with random high-G terminal weaving to complicate fire-control solutions and potentially exhaust defensive interceptors when several weapons arrive nearly simultaneously.

A reported 225-kilogram self-forging fragmentation or semi-armour-piercing warhead uses a smart fuse intended to delay detonation until penetration, directing destructive energy within and downward through the hull rather than dispersing most explosive force outside the target.

Open-source test imagery described in the supplied material indicates an HF-3 impact produced an outwardly torn opening roughly three to four metres high and about three metres wide, although controlled demonstrations cannot establish identical damage against every hull design.

The frequently used “carrier killer” label reflects speed and potential destructive energy rather than a verified single-shot capability against an operational aircraft carrier, whose escorts, layered air defences, electronic warfare and compartmentalised construction create a far harder target.

HF-3 therefore changes the battlespace primarily by increasing defensive uncertainty and reducing reaction margins, especially when integrated into mixed salvos, rather than by guaranteeing destruction independently of targeting quality, salvo density, launch geometry or adversary countermeasures.

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Extended-Range Missiles Push Taiwan’s Kill Chain Beyond the Horizon

The extended-range HF-3ER, associated with the Panlong programme, is commonly credited with approximately 400 kilometres of reach, speeds above Mach 3 and a heavier warhead estimated between 300 and 400 kilograms, substantially enlarging Taiwan’s potential engagement zone.

First operationally deployed during Han Kuang 41 in July 2025, the variant is described as optimised against large combatants and amphibious ships, enabling coastal units to threaten naval concentrations before they reach waters immediately surrounding Taiwan’s principal landing approaches.

Longer reach can force hostile vessels to disperse, manoeuvre defensively or remain farther offshore, potentially complicating amphibious timelines and protective escort formations, but advertised range alone has little value without timely coordinates and dependable tracking of moving ships.

Over-the-horizon targeting becomes the decisive constraint because Taiwan must rapidly fuse information from maritime patrol assets, coastal radars, ships, aircraft, drones and potentially external partners while preserving communications against jamming, cyberattack, decoys and physical strikes.

A command-and-control system capable of assigning different platforms and flight paths could make missiles converge from several bearings, multiplying the defender’s tracking burden and creating opportunities for slower weapons or drones to exploit attention consumed by supersonic threats.

The air-launched Hsiung Chih development further complicates geometry by adapting a smaller missile, reportedly about 5.5 metres long and below 900 to 1,000 kilograms, for F-CK-1 Indigenous Defence Fighters without the surface-launched version’s booster arrangement.

Captive-carry and live-fire testing during 2025–2026, including a live-warhead shot on July 1, 2026, demonstrate continuing progress, although the supplied information indicates the air-launched weapon had not yet entered full operational service by the September exercise.

If operationalised, fighter carriage would extend launch lines and permit rapid repositioning, but aircraft would require protected bases, tanker-independent routing, escort support and survivable mission planning while facing Chinese long-range missiles and sustained counter-air operations.

Claims of possible land-attack capability remain secondary to the missile’s stated anti-ship mission, and rigorous strategic assessments should separate demonstrated maritime functions from speculative roles that could misrepresent inventory allocation, targeting requirements and escalation implications.

The 400-kilometre variant consequently represents both a weapon and an intelligence-network test, because every additional kilometre of nominal range magnifies the need for accurate identification, continuous track custody and secure data transfer across a contested electromagnetic environment.

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Distributed Launchers Complicate China’s Blockade and Invasion Planning

Taiwan deploys HF-3 missiles aboard Cheng Kung-class and Kang Ding-class frigates, Tuo Chiang-class corvettes and Jin Chiang-class patrol boats, while mobile launchers and hardened coastal positions operated by littoral units create additional firing points ashore.

Anping-class Coast Guard vessels add a dual-use layer through wartime conversion, and Qijin’s successful exercise shot demonstrated how peacetime law-enforcement hulls could augment naval missile capacity, complicating adversary targeting calculations and expanding Taiwan’s available maritime launch network.

Mobility supports survivability because transporter-erector-launchers can relocate between concealed sites, reducing exposure to pre-planned strikes, although frequent movement creates detectable logistical signatures and demands secure routes, disciplined emissions control, camouflage, decoys and decentralised command arrangements.

Mixed-platform salvos could pair HF-3 speed with HF-2 or Harpoon flight profiles and attack drones, forcing defenders to allocate sensors and interceptors across threats possessing different velocities, altitudes, signatures, terminal behaviours and potential approach bearings.

HIMARS rockets, Tien Kung III interceptors and land-based Sky Sword II missiles appearing within the broader exercise highlighted a joint force attempting to link offensive maritime denial with air defence and precision fires rather than treating anti-ship missiles as isolated capabilities.

For a blockade scenario, dispersed missiles threaten enforcement vessels and escorts approaching Taiwan, potentially requiring China to expand air-defence coverage, conduct systematic coastal suppression and maintain greater stand-off distances that weaken visual inspection or physical interdiction options.

During an amphibious campaign, the most valuable targets may include troop transports, landing ships and logistical vessels rather than heavily defended principal combatants, because destroying limited sealift capacity could disrupt force flow even when escorts remain operational.

China could respond through persistent surveillance, ballistic and cruise-missile strikes, electronic warfare, cyber operations, special forces and unmanned reconnaissance designed to locate launchers and fracture Taiwan’s sensor-to-shooter chain before mobile batteries generate coordinated firing solutions.

Taiwan’s distributed architecture therefore imposes costs only if launchers survive the opening campaign, receive reliable target data and retain sufficient ammunition, making concealment, reloading, maintenance and redundant communications as strategically important as missile speed or warhead power.

The September sinking communicated that Taiwan possesses multiple firing mechanisms, yet deterrence will depend on convincing Beijing that enough interconnected elements would endure sustained attack to deny operational objectives rather than merely inflict dramatic initial losses.

Production, Personnel and Logistics Determine Sustainable Missile Power

Taiwan reportedly increased annual combined output of standard and extended-range HF-3 missiles from roughly 20 to approximately 70 under expanded production, while the broader Hsiung Feng family has accumulated deliveries exceeding 1,000 weapons in recent years.

The Panlong extended-range production line was approaching completion of its 2022–2026 special-budget phase, with additional purchases planned after 2026, indicating that Taiwan views deep maritime denial as a continuing force-structure requirement rather than a temporary procurement surge.

Inventory depth matters because a high-intensity conflict could require repeated salvos against numerous contacts while reserving weapons for later invasion waves, forcing commanders to balance immediate tactical opportunities against uncertain campaign duration and replenishment prospects.

Reports that missiles and launchers were arriving faster than trained personnel reveal a critical readiness gap, because stored weapons cannot generate deterrence unless crews can move, maintain, network, reload and fire them accurately under dispersed wartime conditions.

Expanding littoral formations therefore requires substantially more than operator courses, encompassing technical maintainers, target analysts, communications specialists, transport crews, security elements and experienced commanders capable of applying decentralised doctrine when headquarters or networks become unavailable.

The liquid-fuel ramjet and associated support equipment create maintenance and handling obligations, while mobile batteries need protected storage, reload vehicles, spare components and concealed resupply routes that remain functional after ports, depots, roads and communications nodes suffer attack.

Taiwan must also prevent launcher expansion from outrunning surveillance capacity, since additional missiles without corresponding sensors and data links can produce a numerical stockpile that lacks the track quality required for discrimination and effective long-range engagement.

The accidental July 1, 2016 launch from Chin Chiang, which struck a fishing vessel after flying approximately 75 kilometres, killed the captain and injured three, demonstrates why procedural discipline and safety controls remain inseparable from accelerated force expansion.

Although the warhead did not fully detonate and three officers were held responsible for procedural violations, the episode illustrates how training deficiencies or command failures can create lethal consequences even before an adversary contests the operating environment.

Sustainable anti-ship warfare consequently rests on an industrial and human ecosystem connecting factories, magazines, training units, sensors, communications and dispersed launch sites, making logistics resilience the decisive bridge between Taiwan’s growing missile inventory and credible combat endurance.

Strategic Signalling Is Powerful, but Combat Uncertainty Remains

The Lan Yang sinking delivered a carefully staged message to domestic audiences, Beijing and international observers: Taiwan is building the capacity to impose severe losses on naval forces attempting coercion, blockade or amphibious assault across the surrounding approaches.

President Lai’s presence elevated the event from technical evaluation to national strategic signalling, associating political leadership with joint-force readiness while demonstrating that indigenous missiles and imported systems are being integrated within a broader precision-strike and defensive framework.

For regional planners, the exercise suggested Taiwan could contribute a dense coastal anti-access zone affecting operational calculations across the western Pacific, especially if external intelligence and surveillance networks help maintain tracks beyond the island’s organic sensor horizon.

However, external targeting support would introduce political and escalation questions, while dependence on foreign data could create vulnerabilities if communications were disrupted, delayed or constrained by partners seeking to control their degree of involvement during a crisis.

The exercise also highlighted asymmetric economics, because mobile missiles and converted patrol ships can threaten far larger naval assets, yet Taiwan must purchase sufficient rounds and preserve enough launchers to survive an adversary possessing extensive reconnaissance and strike capacity.

China may interpret the display as further evidence that delaying action permits Taiwan’s denial architecture to mature, or alternatively as proof that an assault would face unacceptable uncertainty, illustrating how identical military developments can generate opposing conclusions about escalation and deterrence.

Taipei’s strongest position lies in ensuring that no single countermeasure can collapse the network, requiring diversified sensors, independent launch authorities, hardened communications, physical decoys and stocks distributed broadly enough to withstand an extended suppression campaign.

The September 18 event verified that multiple Taiwanese weapons could strike and sink a representative frigate-sized target, but it did not establish performance against manoeuvring formations protected by airborne surveillance, electronic warfare, interceptors and coordinated counterfire.

That distinction preserves factual neutrality while recognising genuine progress: Taiwan demonstrated terminal lethality and joint firing complexity, whereas survivability, battle-damage assessment, contested targeting and sustained reload operations remain assumptions that only demanding exercises or warfare could resolve.

Lan Yang’s final mission therefore mattered less as proof of an invincible “carrier killer” than as evidence of an evolving force posture designed to make every hostile naval approach slower, more resource-intensive, operationally uncertain and potentially catastrophic.