The US Naval Institute news site featured an article about the updated design for the next Arleigh Burke guided missile destroyers procured.  What is fascinating about the article is that it highlights the change in ship design.

A hundred years ago, ships were designed and built around their guns.  Today they are designed and built around their radars and computers.  The AC and power needed to be upgraded from the current Flight II design to accommodate the demands of the new radar set.  The new set is heavier and the hull had to be redesigned to improve sea keeping.  Previous models of the Arleigh Burke had their computers placed deep within the ship for maximum protection, but it made upgrades difficult.  The new design calls for modularization and the ability to swap out components, since IT improves at such a rapid rate.  Read the whole thing.