What does the term "Defense in Depth" refer to regarding a Carrier Strike Group (CSG)?

The term "Defense in Depth" in the context of a Carrier Strike Group (CSG) refers to a strategy that utilizes multiple layers of defense to protect the carrier and its accompanying ships from potential threats. By surrounding the carrier with various defensive units, such as aircraft, destroyers, submarines, and other assets, the CSG creates a robust defense mechanism that can engage threats at different ranges and altitudes.

This strategy is vital in maritime operations, as it enhances the survivability of the carrier and its strike capability against enemy attacks, whether they be from airborne platforms or surface and subsurface threats. Each layer of defense complements the others, allowing for a coordinated response that can adapt to the evolving threat landscape and maintain the operational integrity of the CSG. By employing this multifaceted approach, the CSG ensures that any adversary faces significant challenges when attempting to engage the carrier directly.