Declassified now - JARI-USV-A "Killer Whale"
58 meters long, 23 meters wide, has a displacement of 500 tons, and a cruising range of over 4,000 nautical miles.
This airshow just keeps on giving. Holy.
It also is UVLS by @太湖军I名.
More info by them, translated: It is equipped with a universal vertical launch system, carrying payloads such as rockets, anti-ship missiles, surface-to-air missiles, and a remote-controlled weapons station. It can operate in coordination with drones, achieving a high level of firepower integration on a small platform. It can be independently deployed for long-term missions or work alongside other forces in critical sea areas, performing tasks such as surveillance patrols, anti-ship strikes, anti-submarine warfare, self-defense against aerial threats, battlefield environmental assessment, and search-and-rescue missions.