21,800 Kg — that number, stamped on a plaque in March 2025 by State Factory 447, names and weighs a new "155 mm Naval Guided Missile Gun" that has since moved from display and pier‑side installation to open‑water testing.
State Factory 447’s 155 mm Naval Guided Missile Gun, March 2025
Photographs of a plaque dated March 2025 identify a weapon as the "155 mm Naval Guided Missile Gun," produced by State Factory 447 and listed at 21800 Kg. The plaque detail is the earliest firm fixture in the public record for this system and supplies the clearest manufacturing data released so far.
Type 909 test ship: from pier to sea on May 1, 2026
High‑resolution imagery shows the gun mount first appearing aboard a Type 909‑series test ship in February 2026, and by May 1 the ship was conducting open‑water activity. The blog post describing the May Day photographs noted that the system "has moved from pier‑side installation to open‑water testing," and described the Type 909 test ships as long‑standing PLAN platforms "for evaluating new sensors, weapons, and combat systems."
An unconfirmed technical note in the imagery record suggests the gun may be a 43‑caliber design; the post explicitly treated that as not yet verified. The transition from static display to sea trials is the concrete development visible in the public imagery chain.
Possible fit: Type 055, retrofits, or a new "heavy" DDG?
The public record raises two explicit deployment possibilities. One line of reporting asks whether the Type055 destroyer — currently noted in the post as the PLAN’s heaviest combatant and equipped with a 130 mm H/PJ‑38 gun — might be retrofitted to accept the 155 mm system. The same post also recorded the question of whether a new class of PLAN "heavy" destroyer is under consideration. The original text framed these as open questions: "Retrofiring the Type055 from 130mm to this new 155mm? A new class of PLAN 'heavy' is under consideration? Both 1 and 2?"
Role and design intent: an AGS‑like capability
Earlier commentary circulating with the photos compared the weapon’s concept and role to the U.S. Navy’s Advanced Gun System (AGS). The public write‑ups link the 155 mm design to an operational profile "optimized for delivering sustained, precision fire in support of amphibious and coastal operations." The same analysis listed several potential doctrinal and technical implications: an expanded land‑attack portfolio alongside missile systems, potential interoperability with advanced guided projectile technology, and a doctrinal shift toward sustained naval gunfire support in joint operations.
What this means for the PLAN, naval technologists, and shipbuilders
- The People’s Liberation Army Navy (PLAN): will be watching sea trials closely as a concrete step toward integrating a larger‑caliber, precision‑oriented gun into fleet operations; the visible use of a Type 909 test ship signals formal evaluation rather than mere display.
- Naval technologists and weapons developers: will focus on guided‑projectile compatibility and the sustained‑fire profile implied by a 155 mm mount, especially if the system is indeed intended to mirror AGS roles for amphibious and coastal support.
- Shipbuilders and procurement planners: must contend with the engineering and weight implications (the plaque lists 21800 Kg) and the strategic choice between retrofitting existing hulls such as the Type055 or designing a new "heavy" destroyer to accommodate the system.
The photographic trail — a March 2025 plaque, closer looks through 2025, an installation on a Type 909 in February 2026, and sea trials in May 2026 — establishes a clear development arc. As the blog post put it with a touch of levity, "A May Day surprise? If so, the PLAN definitely has a sense of humor." More photos and details, the post predicted, "will no doubt surface as sea trials continues."
