Chinese aircraft carriers - Type 002 'Shandong' and Type 003 'Fujian'

[Josh_TN]

I'm thinking that's shock testing, where you deliberately set off an explosion of specified size a certain distance away from the hull and look for what broke.

Boom in the picture is much too small to be a nuke, and it doesn't have a shadow under it to be a cloud.

Would the ship be underway during a shock test? I’m leaning to very low cloud.

 

[Scott Kenny]

Would the ship be underway during a shock test?

For some tests, I think.

Never did shock tests on my subs.

I’m leaning to very low cloud.

Possible, but it'd have to be nearly a fog bank.