Subject: Done sank before it left the dock
Oh, darn. Hate when this happens:

https://www.cnn.com/2024/09/26...

China’s newest nuclear-powered submarine sank pierside in the spring and the Chinese Navy tried to conceal the loss, according to two US defense officials.

The attack submarine was the first of its new Zhou-class line of vessels, the official said, under construction at a shipyard near the city of Wuhan. The Zhou-class submarines have a distinctive X-shaped stern, designed to improve maneuverability underwater.