I noticed the photograph below in the news last week in an article about the re-enactment of the Inchon Landing during the Korean War.

I would really like to know what kind of blasts those are.

They seem to be detonating in one plane and also appear to be spreading shrapnel in the same plane if you look at the water underneath the middle blast.

I am guessing that they are either anti-aircraft blasts or some beach clearance devices.

Either way, I wouldn’t want to be on the receiving end of one of them but I can think of quite a few uses for them!

Another view.