blast damage is modeled for CV's
try offline, set the ack to 0 so it does not kill you, and get to an enemy CV with a torpedo.
release the torpedo so it hits right below the big guns on the cruiser.
with 1 torpedo you will not sink the ship, but if aimed right you will get "kill" messages of the guns being damaged by the blast.
this also works with a 1000lb bomb dropped right next to a CV. i mean right next to it though, not glancing it or hitting the edge.
it is easier to see the "kill" message of the gun batteries on the smaller support ships, since their guns are closer to sea level.