Back to today’s briefing

Story perspectives

China Unveils Massive Underwater Drones in South China Sea

9/24/2025

50 8

Summary

Story summary

China tests Ultra-Large Uncrewed Underwater Vehicles (XXLUUV) in the South China Sea near Hainan, signaling greater capability.
Each XXLUUV exceeds 40 meters and is housed in floating docks to aid testing and secrecy.
The vessels may carry more weapons and are expected to have advanced sensor suites with AI-driven processing.
Speculation about nuclear propulsion exists, but no evidence supports it.

1 of 1

Story summary

China tests Ultra-Large Uncrewed Underwater Vehicles (XXLUUV) in the South China Sea near Hainan, signaling greater capability.
Each XXLUUV exceeds 40 meters and is housed in floating docks to aid testing and secrecy.
The vessels may carry more weapons and are expected to have advanced sensor suites with AI-driven processing.
Speculation about nuclear propulsion exists, but no evidence supports it.