China Tests 155mm Naval Gun, Expands Amphibious & Anti-Ship Firepower

The War Zone reports China has mounted a 155mm gun—its largest modern naval gun to date—on a test vessel. The platform is designed to support amphibious operations and engage surface and air targets. The article provides no details on deployment timeline, production rate, or which class of ship will carry the weapon operationally.

If the 155mm gun equips the Type 075 LPD fleet (9+ hulls planned), it directly increases the firepower density of Chinese amphibious task forces, which compresses the window for allied air defense systems to intercept inbound support fire during a Taiwan strait crossing. This forces U.S.

Pacific Command to either accelerate short-range air defense procurement (e.g., CRAM, SeaRAM upgrades on allied navies) or accept higher casualty estimates in amphibious defense scenarios, reshaping force sizing assumptions in the FY27 Taiwan Contingency Plan.

WHY IT MATTERS

A 155mm naval gun increases effective range and payload for Chinese amphibious assault ships and destroyers, directly enhancing fire support for Taiwan contingency operations and contested island scenarios in the South China Sea.

The capability matters most if it appears on the Type 075 LPD or Type 052D/055 destroyer classes—confirmation of which platforms carry it will determine whether this is a marginal upgrade to existing hulls or a step change in amphibious fire support. Without production numbers and deployment timelines, it's unclear whether this represents immediate operational risk or a 2-3 year capability maturation.

WHAT THIS DOESN’T TELL US

The article does not specify which ship class(es) will receive the 155mm gun, production capacity, expected deployment date, or how this compares in range and rate-of-fire to existing Chinese naval guns or U.S./allied equivalents.

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