Why a Pacific-range F100 adaptation can become a new ship

The Álvaro de Bazán class and its Australian Hobart adaptation are assessed as sound ships. A design suited to North Atlantic and Mediterranean operations does not automatically meet American expectations for Pacific endurance. Adding fuel requires space, changes to internal arrangements and supporting modifications elsewhere. Inserting a section of hull therefore does more than add an isolated tank. As alterations accumulate, an adaptation can become a new design constrained by its parent, anticipating the later Constellation discussion.