Sejong the Great enlarges a familiar Aegis-destroyer pattern to suit South Korea's fleet economics. Korea planned six of these large destroyers, while the US Navy requires dozens of Arleigh Burkes, so South Korea can justify greater investment in each hull. In the illustrative comparison, spending a Sejong-sized budget on every Burke could leave the US Navy with forty ships where it needs fifty. Greater capability per ship would then come at the expense of needed hull numbers. The diminishing-returns argument is that moving from a highly capable design toward theoretical perfection becomes disproportionately expensive, much as additional ship speed demands rapidly increasing power. Different fleet sizes therefore produce different procurement choices even when both navies value similar technology.
Notable Point ยท 34:19-35:43
Sejong the Great scales up the Burke-shaped destroyer idea
South Korea's smaller fleet can justify individual destroyers that are larger and more expensive than their US counterparts.