Design considerations also dictated size. The company had decided on a steel hull rather than the aluminum one featured on the QE2, because of steel's better durability. But that meant the ship had to be made wider. Ultimately the size was constrained in length by the amount of room in which the ship could turn around in its two main harbors: Southampton, England, and New York. Its height was tailored for passage under New York City's Verrazano Narrows Bridge. The QM2's growth didn't stop, however, until she was already too large to make it through the Panama Canal. Conover says that was not a major concern as "Panama Canal economies just weren't there for ocean liners." However, the company's president does confess to "a bit of gulping" as the price rose on the vessel during the more than five years between the idea's conception and launch. more