Arguably these could be called skill on behalf of the shooter.
Many planes, ships, and tanks met their end by a couple or even one well placed round, despite their designers enthusiasm/promises, either directly, or consequentialy.
Accidental detonations included.
examples:
Arizona
Roma
Mutsu
to name just a few.
I recal reading about a 4-duce mortar from a chemical batallion putting a round through the open hatch of a Panzer IV. Nicely done boys!

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All opinions expressed here are those of "Little Green Men" and don't necessarily represent views, positions, policy, thoughts, actions, or anything else.

In the Arizona's case it was simply that the ship was not completely buttoned up for the attack. A single open hatch is assumed to have allowed the flash to carry into a magazine as no other Japanese bomb of the type that sank Arizona penetrated similar thicknesses of armor and detonated successfully. This is why both Tennessee and Maryland survived their hits.

Magazine detonations among battleships under attack are not that uncommon. There were several of these in WW 1, particularly British battlecruisers at Jutland. In WW 2, Hood, Bretange, Fuso, Yamato, Roma, Arizona all suffered magazine explosions from enemy action.

For good shooting I recall an incident in France in 1944 where an expert from Aberdeen Proving Ground was instructing troops on the M 18 and wanted to show the accuracy of the gun. He proceeded to set up a series of German helments at 1000 yards and then using single shots picked them off using the 76mm gun. Don't recall the guy's name right off though.

Both Prince of Wales & South Dakota were hit and lost power. Lucky hits.
Washington & Admiral Lee saved SoDak and dispatched Kirishma.
The Prince was not so lucky. I've heard the captain of Repulse saw two groups of torpedo planes approaching his ship from both starboard & port bow. No way to evade. Lucky flight plan to corner a manuvering ship.
Bismarck took one in the rudder or it would have made good it's escape. Lucky hit.
Arguably the fastest light cruiser the world has ever produced, Bartolomeo Corleone took a hit in the engine room at the end of its attackers range, lost speed, got pummeled and then torpedoed. Lucky hit.
I've heard the Fuso had its keel blown out from under it by deep running torpedos, re-set by a Des-Ron Captain who recognized the shape of a Battleship in the dark. Lucky one Captain was paying attention.
The entire Battle of Midway for the Americans.
CV's Akagi,Kaga,Hiryu,Soryu...blub-blub (and eventually both CA's Mogami/Mikuma)(against loss of CV Yorktown/DD Hammon)
The entire Battle of Savo for the Japanese.
CA's Canberra,Quincy,Astoria,Vincennes...blub-blub. Against nothing.
The Mutsu blew up by itself, the world may never know why.
Jutland was a neat sea battle. The Invincible, Indominable, Inflexible class BC's were vulnerable. Then again so were the Queen Mary, Tiger, Lion class.
The Germans had no better luck with the Derflinger, Lutzow, Von Der Tan, Moltke. BC's fighting BB's. Who'd a figgered?

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All opinions expressed here are those of "Little Green Men" and don't necessarily represent views, positions, policy, thoughts, actions, or anything else.