INVESTIGATION: Beijing's 155mm naval supergun — the siege weapon aimed at Taiwan from the sea

Introduction: A cannon from the iron age for a twenty-first century war

The resurrection of a forgotten doctrine

There is something anachronistic, almost cinematic, about the image of a 155-millimeter cannon mounted on the bow of a modern destroyer. The era of heavy naval artillery was supposed to be dead and buried, supplanted by cruise missiles and kamikaze drones. We were wrong. The People's Liberation Army Navy (PLAN) has just put a logic of massive coastal bombardment back on the table, and the geopolitical message is as heavy as the gun itself: this siege weapon is pointed at Taiwan.

In March 2025, Norinco — China's giant in land-based armaments — completed a prototype naval cannon of 155mm caliber, the largest active caliber ever installed on a warship in service. The test vessel, the Wu Yunduo, a 6,000-ton ship, began sea trials near Dalian in May 2026. This is not a laboratory experiment. It is an ongoing operational integration, carried out by a fleet that already fields 35 Type 052D destroyers and 10 Type 055 destroyers, all candidates to receive this technology.

Why now, why Taiwan

The question nobody in Beijing asks officially is precisely the one that must be asked: what is the point of a 155mm naval cannon in 2026? The answer is brutally simple. Missiles, however capable, are expensive per unit, traceable, and can be intercepted. Long-range naval artillery, on the other hand, enables continuous, economical saturation fire, difficult for missile defense systems to overwhelm. With a claimed range of 200 km using extended-range munitions, this cannon can hit targets on the island of Taiwan from protected positions inside the strait — or even from international waters.

Analysts at Defence Security Asia noted as early as February 2026 that this weapon fits within a doctrine of amphibious landing support. Before an assault force touches Taiwanese soil, coastal defenses, radar installations, and ammunition depots would need to be neutralized. The 155mm cannon does exactly that job: systematically preparing the ground, shot by shot, without depleting the stock of cruise missiles that will be needed for high-value targets.

Norinco and the Wu Yunduo — the secrets of an industrial birth

Norinco: from battle tank to open sea

Norinco (China North Industries Group Corporation) is first and foremost a manufacturer of land-based systems: tanks, self-propelled artillery, ammunition. The company, which has appeared for years on the Pentagon's list of 188 Chinese military companies, made a bold industrial bet: transposing its expertise in 155mm caliber artillery — NATO's land standard, ironically — onto a naval platform. The result, completed in March 2025, is a 21.8-ton system integrating a high-rate-of-fire automated turret with active barrel cooling.

The choice of 155mm caliber is no accident. This is the standard of the German PzH 2000 and American M109 howitzers, which demonstrated in Ukraine that long-range precision artillery remains a decisive force multiplier. By adapting it to the navy, Norinco creates a doctrinal bridge between modern land warfare and naval power projection. It is a technological fusion that no one else has achieved at this operational scale.

The Wu Yunduo: laboratory vessel or production prototype

The 6,000-ton vessel named Wu Yunduo is not a combat ship in the active fleet. It is identified as a platform for technical testing and integration. The sea trials conducted in May 2026 near Dalian were designed to measure the vessel's stability under the recoil constraints of a cannon of this caliber, test fire-control systems, and evaluate structural stresses at different speeds and sea conditions. According to Asia Times, the initial data from these trials were positive, though no official confirmation from the PLAN has been published.

The real question is one of serialization: will Beijing integrate this system onto its active fleet destroyers? The Type 052D and Type 055 are currently armed with anti-ship missiles and air defense systems. Replacing or supplementing their main armament with this 155mm cannon would represent a major doctrinal reconversion — but also a considerable tactical advantage in any amphibious operation scenario against a fortified coastline.

The 200 km range — decoding a technical claim

Extended-range munitions: what 200 km really means

The 200 km range claimed for this naval cannon is not achievable with standard munitions. It is conditional on the use of Extended Range Guided Munitions — propelled and guided projectiles that combine cannon propulsion with an aerodynamic lift system. This type of munition — the Chinese equivalent of the American ERGM or LRLAP — has not yet been confirmed as fully operational by independently verifiable sources. The 200 km figure should therefore be interpreted as a theoretical maximum performance, not a capability already demonstrated under real conditions.

The conventional range of a 155mm naval howitzer is more in the range of 40 to 70 km, which is still considerable for naval artillery. At that distance, from positions in the Taiwan Strait, the cannon can nonetheless reach critical infrastructure on Taiwan's west coast: the ports of Taichung and Kaohsiung, radar installations, fuel depots. That is not negligible — it is precisely what PLAN military planners are seeking to prepare for.

Comparison with Western standards

For context: the American Advanced Gun System (AGS), installed on Zumwalt-class destroyers, fires LRLAP munitions at a range of 148 km. The program was largely abandoned because of the prohibitive cost of munitions — $800,000 per round. The challenge that Norinco must now meet is precisely to offer an economically viable solution. If Chinese long-range munitions can be produced at an acceptable cost, the advantage is real. If costs explode as they did with the American AGS, the program will lose its operational appeal.

The SCMP highlighted in June 2026 that the PLAN is betting precisely on this economic tradeoff: a combined artillery-missile saturation, in which the cannon provides volume of fire and missiles handle precision strikes against high-value targets. It is a hybrid doctrine drawing on lessons from recent conflicts, particularly Ukraine, where saturation artillery demonstrated its ability to destroy fortified defenses that missiles alone could not have neutralized.

The Type 052D and Type 055 fleet — potential vectors of the threat

35 Type 052Ds and 10 Type 055s: a destroyer fleet with no regional equal

At the time of the Wu Yunduo's sea trials, the Chinese navy fielded 35 Type 052D destroyers and 10 Type 055 destroyers in active service, according to data compiled by Asia Times in June 2026. These figures are blunt, but their implication is staggering: if even a fraction of this fleet is equipped with the 155mm cannon, the firepower it could project against Taiwan's coastlines would become overwhelming. The Type 055, with its displacement of 13,000 tons, is particularly well-suited to integrating a heavy system of this type without compromising its other capabilities.

The Type 052D, smaller at 7,500 tons, poses a more serious integration challenge. The 21.8-ton turret represents a significant mass for a vessel of this size, and its installation would alter the center of gravity and stability. Substantial structural modifications would likely be required, which may explain why the trials are being conducted on a dedicated vessel rather than directly on a production destroyer.

Integration into the joint operations doctrine

The PLAN does not think of this cannon in isolation. Within the doctrine of joint area operations (Joint Island Landing Campaign), this system fits into a coordinated kill chain: first, DF-21D and DF-26 anti-ship ballistic missiles neutralize opposing carrier groups; then cruise missiles destroy air defense systems; and finally, 155mm naval artillery prepares landing beaches by neutralizing coastal fortifications and defensive strongpoints. It is a layered suppression sequence that mirrors, on a maritime scale, what Russian artillery attempted in Ukraine — with lessons drawn from the successes and failures of that campaign.

The Dongfeng 2024 exercises and the maneuvers around Taiwan in April 2023 and August 2022 already tested elements of this doctrine. Adding a heavy naval artillery capability would complete a puzzle whose pieces have been falling into place for several years. Taipei's planners must factor this into their threat assessments — and their June 2026 preparations, which we will analyze in subsequent articles in this series, show they have gotten the message.

Taiwan's defenses — 1,400 missiles against artillery

Taiwan's anti-ship arsenal: a missile shield

Taiwan is not defenseless. The island possesses one of the densest anti-ship arsenals in Asia relative to its size. According to data compiled by Asia Times, Taiwan fielded approximately 1,000 Hsiung Feng II and III missiles as of June 2026 — domestically manufactured anti-ship missiles with ranges of 150 to 400 km — along with more than 400 Harpoon missiles supplied by the United States. This combination represents a serious threat to any surface vessel approaching within firing range of the 155mm cannon.

The defensive paradox lies precisely here: to use its naval cannon at its standard range of 40–70 km, the Chinese navy would have to navigate waters where its ships would be exposed to Hsiung Feng and Harpoon missiles. The 200 km long-range munitions are therefore less a comfort option than a tactical necessity: allowing armed vessels to stay outside the danger zone of Taiwan's coastal defenses while maintaining their strike capability. It is a race between Chinese offensive range and Taiwanese defensive range.

The limits of anti-artillery defenses

The problem that heavy artillery poses for defenders is fundamentally different from that posed by missiles. A missile can be intercepted by a Patriot or Sky Bow III system. An artillery shell — especially in rapid salvos — is far more difficult to intercept systematically. C-RAM (Counter Rocket Artillery Mortar) systems exist, but their effectiveness against 155mm long-range munitions traveling on flattened ballistic trajectories remains limited. Taiwan possesses a limited number of AN/TWQ-1 Avenger systems and Phalanx batteries, but their coverage is primarily designed for air defense and anti-missile protection, not for long-range naval counter-battery fire.

Taiwan's response to the 155mm cannon will likely be asymmetric: rather than attempting to intercept shells, Taipei will seek to destroy the launching vessels before they open fire. This is where the importance of Taiwan's submarines — the fleet is being modernized with new domestically built Hai Kun-class vessels — and F-16V aircraft equipped with AGM-84 Harpoon anti-ship missiles will become decisive. Defending Taiwan against this cannon means, above all, destroying the launcher.

China's amphibious doctrine — what the cannon reveals about the broader strategy

The Joint Island Landing Campaign revisited

American and Taiwanese military strategists have spent years analyzing the Joint Island Landing Campaign (JILC), the PLAN's unofficial doctrine for an amphibious assault on Taiwan. This doctrine has evolved considerably since the early 2000s versions, incorporating lessons from recent wars. One of the fundamental challenges of a landing operation against a fortified coastline is the phase of beach defense neutralization (naval SEAD and DEAD). This is precisely the role the 155mm cannon is designed to fill: sustained, continuous, economical fire against fortifications, forward command centers, and logistical depots that resist pinpoint missile strikes.

The Defence Security Asia report of February 2026 estimated that integrating this system on a single Type 055 destroyer would enable a firing rate of 10 to 15 rounds per minute against coastal targets. Over a six-hour period — typical duration of a pre-landing preparation phase — that amounts to between 3,600 and 5,400 impacts across a coastal zone of roughly ten square kilometers. No fortification is built to absorb that kind of prolonged saturation without significant damage to its defensive capacity.

Interdependence with aircraft carriers and the amphibious fleet

The 155mm cannon does not operate alone. It integrates into a force structure that includes the Chinese navy's two operational aircraft carriers — the Shandong and the Fujian — along with the amphibious fleet of Type 075 and Type 071 vessels. While destroyers armed with the cannon saturate coastal defenses, amphibious ships ferry assault troops, and carrier-based air cover protects the entire force package against aerial counterattacks. It is a complete expeditionary force architecture, of which the 155mm cannon is now an essential cog.

Analysts at SCMP noted that the PLAN's interest in this type of system accelerated after careful observation of the conflict in Ukraine, where long-range artillery — notably American HIMARS at 80 km and French Caesar howitzers — demonstrated its ability to shift the tactical balance even against numerically superior forces. Beijing drew its own lessons: if long-range artillery can change the course of a land war, its naval equivalent can change the course of an amphibious assault.

American reactions — between surveillance and counter-development

The Pentagon facing a naval artillery problem

The American response to China's development of a 155mm naval cannon is first and foremost an intelligence response: monitor, document, assess. The Pentagon confirmed, in its 2025 annual report on Chinese military power, that the PLAN is developing long-range naval artillery capabilities as part of its amphibious modernization. What the report does not specify — and what sources like Asia Times have revealed — is the level of advancement already reached with the Wu Yunduo's sea trials.

The American problem is structural. Washington has precisely abandoned its own heavy naval artillery program with the AGS aboard the Zumwalt destroyer. The three Zumwalt-class destroyers in service saw their main cannon partially deactivated due to a lack of affordable munitions. The replacement program — integrating a hypersonic missile launcher into the AGS tubes — is advancing slowly. If the Chinese navy succeeds where the American navy has failed, it is a symbolic as much as tactical reversal of a balance of power that has long favored Washington.

Regional allies on alert

Japan and Australia are following the development of China's naval cannon with particular attention. Tokyo recently accelerated its shipbuilding program, approving a record defense budget in 2025 aimed at bringing military spending to 2% of GDP. One of the priority axes is precisely the development of long-range anti-ship countermeasures capable of threatening Chinese amphibious forces before they reach Taiwan's coastlines. Japan's acquisition of Tomahawk missiles and the domestic development of the extended-range Type 12 missile fit within this logic.

Canberra, for its part, is accelerating acquisitions under AUKUS, notably nuclear-powered submarines whose first deliveries are expected in the second half of the 2030s. The shared logic behind both allies is identical: create a distributed deterrence network capable of threatening Chinese surface vessels at distances sufficient to make any scenario involving the 155mm cannon against Taiwan's coastlines prohibitively costly.

The smart munitions challenge — the decisive variable

Long-range guided projectiles: the economic equation

If the cannon itself is an integration achievement for Norinco, the real battle is over munitions. The 200 km range is only attainable with rocket-assisted projectiles combined with GPS or inertial guidance. These munitions are radically more complex and more expensive than conventional shells. The American experience with the LRLAP for the Zumwalt AGS showed that this type of munition could reach unit costs of $500,000 to $1 million, making the system economically unviable at scale.

China has an industrial advantage that the United States does not possess in this domain: mass manufacturing production capacity and structurally lower labor costs. If Norinco can produce long-range guided munitions at a cost of 50,000 to 100,000 yuan per unit (approximately $7,000 to $14,000), the system suddenly becomes economically viable for intensive use. That is where the strategic equation tips — not on the cannon's performance, but on munitions logistics and economics.

Enhanced fragmentation munitions and coastal saturation

Regardless of the long-range munitions, the 155mm cannon retains tactical utility with conventional short- and medium-range munitions. Enhanced Fragmentation munitions, capable of covering an area of several hundred square meters per impact, are particularly effective against light fortifications, lightly armored vehicles, and troop concentrations in landing zones. At a range of 40–50 km, two or three destroyers armed with this cannon can maintain a rate of destruction sufficient to progressively neutralize a landing beach's defenses.

Defence Security Asia estimated in February 2026 that in a landing scenario on Taiwan's west coast, three to five destroyers armed with the 155mm cannon could provide the fire support needed by an amphibious assault brigade of 15,000 to 20,000 troops, substantially reducing dependence on expensive cruise missiles for the initial preparation phase. It is a military economic efficiency argument that explains why this program, despite its technical challenges, remains a priority for PLAN planners.

The regional dimension — what Seoul and Tokyo are calculating

South Korea facing the naval cannon precedent

Seoul is watching the development of the 155mm naval cannon with an anxiety that official statements only express in measured diplomatic terms. The reason is twofold. First, North Korea already possesses a massive coastal artillery capable of threatening Seoul — the South Korean capital is less than 60 km from the border. A Chinese long-range naval cannon adds a maritime dimension to this existing threat. Second, South Korea, a US ally, knows that any conflict in the Taiwan Strait will have immediate repercussions on the Korean peninsula — a Chinese navy deployed in force in the strait would find itself near the maritime supply routes vital to the South Korean economy.

Seoul has responded by accelerating its own naval program. The KDX-III Batch II-class destroyer, whose first units are expected to enter service by 2027, will be equipped with long-range strike capabilities including Haesseong-III anti-ship missiles with a range exceeding 400 km. The logic is one of cross-deterrence: threaten Chinese surface vessels sufficiently to make their deployment in a regional conflict scenario unacceptably costly.

Japan and its assumed remilitarization

In Tokyo, the development of China's 155mm naval cannon fed the debates that led to the revision of Japan's National Security Strategy in 2022 — now fleshed out by the 2024 and 2025 military budgets pushing spending toward the threshold of 2% of GDP. Japan has officially acquired a deep-strike capability against adversary territory, a strategic revolution for a country whose post-war constitution limited its defense to a strictly defensive posture. The extended-range Type 12 Stand-off Missile, with a range exceeding 1,000 km, is explicitly designed to threaten Chinese naval forces in a conflict scenario in the East China Sea and Taiwan Strait.

The Ryukyu Islands — notably Okinawa and the Sakishima Islands — are at the heart of Japan's strategy. Located less than 200 km from Taiwan, these islands would be obligatory passage points for any Chinese force seeking to control maritime access between the South China Sea and the Pacific Ocean. Tokyo has intensified force deployments to these islands — including Type 12 anti-ship missile batteries and PAC-3 missile defense systems — precisely to create a deterrence barrier to the use of these maritime routes by the Chinese navy.

The legacy of past wars — lessons poorly learned or well retained

Guadalcanal, Normandy, Inchon: naval artillery as a decisive factor

Military history on amphibious operations is unequivocal: naval supporting artillery has always been a determining factor. At Normandy in June 1944, naval bombardments by Allied battleships and cruisers destroyed significant portions of the defenses of the Atlantic Wall, allowing troops to land against partially neutralized defensive positions — even if the human cost remained terribly high. At Inchon in 1950, General MacArthur had staked everything on surprise and naval firepower to compensate for the audacity of a landing on fortified territory. These precedents are not lost on PLAN planners — they are part of the curriculum in Chinese military academies.

The lesson of the Falklands in 1982 is equally relevant: Argentine amphibious forces succeeded in their initial landing due to insufficient British defensive resistance during the opening phase. This is precisely what Taiwan seeks to avoid: allowing the PLAN to establish a beachhead before organized resistance can be mounted. Naval artillery of 155mm caliber, if it can neutralize the first defensive lines within hours of intense bombardment, would be an accelerant for this critical phase.

Ukraine as a laboratory — the revenge of artillery

The war in Ukraine, closely observed by all major military powers, has restored artillery to its central place in strategic thinking. Russian artillery, despite its logistical problems and considerable losses, remains the primary instrument of destruction on the front. American HIMARS, with their precision and range, allowed Ukraine to strike Russian ammunition depots and forward command posts at distances that put them beyond the reach of conventional Ukrainian artillery. This duality — saturation artillery for mass destruction, precision artillery for high-value targets — is exactly the hybrid doctrine the PLAN seeks to develop for its 155mm naval cannon.

Beijing also drew lessons from Ukrainian counter-battery fire: exposed artillery systems, even modern ones, are vulnerable to precision strikes. At sea, a destroyer's mobility provides partial protection against counter-battery — a moving vessel cannot be targeted with the same precision as a fixed land artillery battery. But modern anti-ship missiles, such as Taiwan's Hsiung Feng III or Norwegian NSMs provided to other US allies in the region, remain a lethal threat to any destroyer that exposes itself within reasonable firing range of the coast.

Industrial dimensions — Norinco and the Chinese war economy

Norinco: national champion, global player

Norinco (China North Industries Group Corporation) is one of eight major Chinese state armaments groups. Its annual revenue exceeds 70 billion yuan (approximately $10 billion), split between domestic sales to the PLAN and exports to some fifty countries. The group has a long tradition in artillery — its PLZ-05A 155mm howitzers equip the army and have been exported notably to Pakistan and Myanmar. The transition to naval artillery of the same caliber is therefore a natural evolution of its expertise.

One of Norinco's competitive advantages is its vertically integrated supply chain: the group manufactures the cannons, munitions, fire-control systems, and communications equipment. This vertical integration reduces development timelines and production costs, but it also concentrates vulnerabilities — American and European sanctions targeting Norinco would affect the entire production chain for this system.

The stakes of sanctions and technology controls

Norinco appears on the US Treasury Department's list of sanctioned entities, limiting the group's access to American technologies and components. For a naval artillery system, the most critical components subject to export controls are high-precision inertial guidance systems, precision accelerometers, and certain electronic components for fire-control systems. China has invested massively since 2018 in domestic substitution of these components, with uneven but steady progress.

SCMP reported in June 2026 that the guidance systems for the naval cannon's long-range munitions now use chips manufactured in China by companies such as Huawei HiSilicon and foundries from the CXMT group, circumventing restrictions on advanced semiconductors. The performance of these domestic components is judged slightly inferior to their American equivalents, but sufficient for the intended military applications, according to analysts cited by the Hong Kong newspaper.

Beijing's strategic silence — calculated intimidation communication

Neither confirmation nor denial — the doctrine of ambiguity

One of the most revealing aspects of the 155mm naval cannon program is how Beijing manages its communication. There has been no official announcement from the Chinese navy, no PLAN communiqué, no press conference. Information circulates through carefully dosed leaks in specialized media, through observations from commercial satellite imagery, and through expert analyses from outlets such as Asia Times or SCMP. This is the classic doctrine of strategic ambiguity: let adversaries imagine the worst, without ever confirming or denying.

This communication doctrine has several advantages for Beijing. It maintains psychological pressure on Taipei and Washington without creating a measurable diplomatic incident. It allows technical program adjustments without losing face in the event of failure. And it forces adversaries to plan against a maximum capability scenario, even if the real capability remains uncertain — which is itself a form of strategic victory at low cost.

The role of state media in power projection

Global Times and CCTV did not ignore the Wu Yunduo trials — they simply did not address them directly. But coverage of the PLAN's naval exercises increased significantly in 2025–2026, with reports on amphibious capabilities, destroyer modernization, and combined operations doctrine. The subliminal message is consistent: the Chinese navy is ready, modern, capable. The technical details of the 155mm cannon need not be mentioned explicitly — the information exists in international specialized media, and the intended recipients of the message know it perfectly well.

This communication strategy contrasts with the voluntary transparency of the American military, which regularly publishes detailed reports on Chinese military capabilities. The Pentagon, paradoxically, helps amplify Beijing's intimidation message by meticulously documenting these advances in its annual reports to Congress. Both sides find what they need in this arrangement: Washington justifies its budget requests, Beijing circulates its power message through the channel of its principal adversary.

Implications for international law — the grey zones of the sea

The Taiwan Strait and the right of innocent passage

The potential use of a 155mm naval cannon in the Taiwan Strait raises questions of international law that remain largely unresolved. China claims partial sovereignty over the strait, treating it as internal waters — a position rejected by the United States, Japan, and most democracies. The United Nations Convention on the Law of the Sea (UNCLOS) guarantees the right of innocent passage through international straits, but China has never ratified the arbitration provisions of UNCLOS that ruled against it (notably the 2016 ruling on the South China Sea).

In a conflict scenario, the question of international law would quickly become academic. But in peacetime, deploying destroyers armed with the 155mm cannon in the strait would represent a calculated provocation. American freedom of navigation in the strait — the Freedom of Navigation Operations (FONOPS) regularly conducted by the US Navy — would be confronted with a show of force qualitatively different in nature from embarked missiles. A destroyer pointing its 155mm cannon toward Taiwan's coast during a FONOP, even without firing, would send a political message of considerable intensity.

The militarization of regional waters and its consequences

The progressive militarization of the Taiwan Strait and adjacent waters — South China Sea, East China Sea — is a process underway for a decade. China's artificial islands in the South China Sea, armed with anti-ship missiles and air defense systems, have already altered the regional strategic equation. The 155mm naval cannon is the latest addition to this power projection architecture. Its deeper significance is not purely military — it is a message sent to the region's trading partners, on whom a large share of the global economy depends for transit through these sea lanes.

Global trade passing through the Taiwan Strait and the South China Sea accounts for approximately $5 trillion in goods annually. The mere possibility that these routes could be disrupted by a military conflict involving the PLAN has repercussions on maritime insurance premiums, industrial investment decisions, and supply chain diversification calculations for hundreds of multinational companies. The 155mm cannon, paradoxically, weighs more heavily on the global economy through its threat effect than through its direct destructive capacity.

The ultimate question — how far will Beijing be allowed to go

The sum of all concerns

This 155mm cannon is not a technological curiosity. It is the materialization of an ambition: transforming the Chinese navy into a power projection force capable of imposing its will on the coastlines of its neighbors. Combined with the DF-17 hypersonic, the PL-16 air-to-air, the Lijian anti-drone lasers, and a rapidly growing nuclear stockpile, it constitutes a link in a complete chain of destruction — conceived, funded, and deployed with a strategic coherence that only a resolutely authoritarian power can sustain over multiple decades without deviation.

Taiwan is not defenseless. Its 1,400 anti-ship missiles, its submarine fleet under development, its F-16Vs, its coastal fortifications, and above all the determination of its population are real factors. But the race between China's offensive capability and Taiwan's defensive capability is accelerating. This is not the moment for Washington or its allies to let their guard down, reduce arms deliveries, or allow the slightest doubt to hang over their willingness to defend the strait's status quo.

What history will remember

In ten or twenty years, historians analyzing this period may look back on spring 2026 as the moment when the Chinese navy crossed a decisive qualitative threshold in its amphibious capability. The sea trials of the Wu Yunduo, the 35 Type 052D destroyers and 10 Type 055s potentially reconfigurable, the long-range munitions under development — all of this forms a coherent picture. The 155mm cannon is not an answer to a question; it is a question posed to the international community: how far will Beijing be allowed to go before the collective response becomes something other than press statements?

Conclusion: A cannon that speaks louder than a thousand speeches

The sum of all concerns

This 155mm cannon is not a technological curiosity. It is the materialization of an ambition: transforming the Chinese navy into a power projection force capable of imposing its will on the coastlines of its neighbors. Combined with the DF-17 hypersonic, the PL-16 air-to-air, the Lijian anti-drone lasers, and a rapidly growing nuclear stockpile, it constitutes a link in a complete chain of destruction — conceived, funded, and deployed with a strategic coherence that only a resolutely authoritarian power can sustain over multiple decades without deviation.

Taiwan is not defenseless. Its 1,400 anti-ship missiles, its submarine fleet under development, its F-16Vs, its coastal fortifications, and above all the determination of its population are real factors. But the race between China's offensive capability and Taiwan's defensive capability is accelerating. This is not the moment for Washington or its allies to let their guard down, reduce arms deliveries, or allow the slightest doubt to hang over their willingness to defend the strait's status quo.

What history will remember

In ten or twenty years, historians analyzing this period may look back on spring 2026 as the moment when the Chinese navy crossed a decisive qualitative threshold in its amphibious capability. The sea trials of the Wu Yunduo, the 35 Type 052D destroyers and 10 Type 055s potentially reconfigurable, the long-range munitions under development — all of this forms a coherent picture. The 155mm cannon is not an answer to a question; it is a question posed to the international community: how far will Beijing be allowed to go before the collective response becomes something other than press statements?

Signed Maxime Marquette, columnist

Columnist's transparency box

Editorial positioning

I am a columnist and analyst, not a field journalist. My work is to analyze, interpret, and contextualize facts reported by primary sources. I do not claim to have had access to Chinese navy installations or to confidential government sources. My opinions are clearly identified as such in the editorial passages. I am pro-Western, convinced that international stability rests on a balance of power favorable to liberal democracies, and that the military buildup of authoritarian China constitutes the primary structural threat to that balance.

Methodology and sources

This article is based exclusively on dated, identified, and clickable public sources in the Sources section. No factual figures were invented or extrapolated without a factual basis. Range, cost, and capability estimates are those reported by the cited sources, not personal assessments. Where information is not officially confirmed — such as the details of the Wu Yunduo's sea trials — I flag this explicitly in the text.

Nature of the analysis

This investigation draws on a synthesis of specialized sources in Indo-Pacific defense and geopolitics. It does not constitute an intelligence report or an official military assessment. It aims to inform the English-speaking reader of Chinese military developments that deserve public attention, often undercovered in mainstream media relative to their real strategic importance.

Sources

Primary sources

Asia Times — China's new naval supergun trained on Taiwan's shielded shores — June 16, 2026

South China Morning Post — China's navy has missiles and drones, why is it bringing back big guns? — June 13, 2026

Defence Security Asia — China 155mm Naval Gun: Plan for Taiwan Amphibious Warfare — February 21, 2026

Secondary sources

19FortyFive — China's New 155mm Naval Gun: What It Means for Taiwan — June 2026

Military Times — China's naval artillery program raises regional concerns — June 2026

Foreign Policy — China's New Naval Gun and the Taiwan Strait — June 2026