Missile-tube rows and the limits of extending Virginia

The criticism distinguishes Virginia Block V from hypothetical versions carrying several additional payload modules. The existing extension is treated as tolerable, while repeated modules raise objections about hull length and structural loads. Virginia's narrow beam places the large missile tubes in a single line, whereas a ballistic-missile submarine hull can accommodate two rows. The proposed use of Columbia-sized hulls follows from that arrangement: more missile tubes could fit within a comparable compartment length. A further suggestion is to make cruise-missile inserts transferable between ballistic-missile boats as they age, presented as a design proposal rather than an established conversion system.