The naval standoff around Cuba illustrates that warships remain sovereign territory on an international highway, making control more ambiguous than it appears on a map. Unlike Checkpoint Charlie and other fixed European frontiers, the sea could not be divided cleanly between two blocs. The proposed GIUK Gap barrier used seabed hydrophones and SOSUS sensors to detect Soviet submarines moving into the Atlantic, after which hunter-killer groups would attack any boats already south of the line. This attractive technological answer promised uncontested control and encouraged planners to understate adaptation and countermeasures.
Notable Point · 41:26-45:26
Sea sovereignty and the promise of the GIUK barrier
The Cuban Missile Crisis and the GIUK Gap show how Cold War planners tried to impose fixed zones of control on a sea that has no equivalent of a land frontier.