:0) the difference is, unlike then, there are now small caliber guns and machineguns on ships....back then Japan could have sunk any European or American fleet....since the presiding theory was only BIG BIG BIG guns. Gotta wonder about these lemming admirals.
Modern warships are porcupines rather than turtles. It is the unexpected attack that may be successful; even a kamikaze would have trouble getting through unless by total sneak attack.