According to some accounts, it may be believed that these six were the first ironclads, and were built such that guns could not penetrate them.

Its 75mm gun could penetrate the new Soviet tanks.

Its 25mm main gun could penetrate the armour of the Panzer IV.

Combat use proved that Finnish light anti-tank guns could not penetrate the armour of these tanks.

Their smaller guns could not penetrate the armor-but they could sweep the decks.

The light guns can't penetrate our armor so don't bother with them.

If that gun can penetrate main battle tank armor, it can punch through a submarine's hull.

Its gun can penetrate 360 mm of armor.

A gun could penetrate the metal of a truck.

The T-34's main gun could penetrate the Turan's 50 mm of armor at a much greater distance.