John Halliwell wrote:

In article , Grantland
writes
A shaped charge would be different. 'Moot though, if there were nets.

The whole of the Upkeep charge was effectively a 'shaped charge' though,
pressed right up against the dam wall with hundreds of millions of tons
of water behind it. The whole operation depended on the ability to keep
it pressed against the wall.

--
John

You're confusing Monroe effect with containment.

Grantland