Billy Mitchell insisted on talking about tests of dropping bombs on ships, and his superiors didn't want him talking about those tests very much.
The first naval-warfare techniques were to try to board an enemy shop or else to try to ram it, with the Byzantines using "Greek fire", a kind of marine napalm. When guns became good enough a half a millennium ago, shooting each other became the dominant tactic, all the way to World War I. The next big naval war, World War II, had a mixture of both old and new: ships with big guns and aircraft carriers. The big-gun ships were outperformed by carriers in that war, and the largest naval vessels since then have been carriers.
The world's navies still have plenty of other surface ships, though relatively small and fast ones. They have guns, but relatively small ones, suitable for attacking airplanes and missiles. But are they also becoming vulnerable?