Command links the cable cannot cut.

Undersea cables carry over 95% of international communications. Adversary naval forces can sever, tap, or degrade cable infrastructure with minimal risk of attribution. Nations whose sovereign communications depend on cables transiting international waters have handed adversaries a physical interdiction option. A severed cable does not just disrupt commercial traffic — it severs the command link between a naval HQ and its deployed forces.

Commercial and military satellite downlinks operate over known frequencies, beam patterns, and communication windows that adversary SIGINT assets exploit for passive collection and active jamming. Satellite command links that use standard SATCOM protocols emit recognizable signatures that allow adversaries to track platform communications tempo, identify contact patterns, and develop jamming solutions for active denial.

Emission control requires that platforms transmit no signal that discloses their position. Conventional naval communications protocols emit enough signature — frequency, timing, protocol handshake, power profile — that passive direction-finding assets can locate the transmitting platform. EMCON-compliant communications require not just reduced transmission but transmissions that cannot be attributed to a specific platform or mission profile even when intercepted.

Naval C2 traffic — deployment orders, patrol routes, fleet rendezvous, weapons employment authority — carries strategic intelligence value over decades. Adversaries are archiving encrypted naval traffic today for retroactive quantum decryption. A submarine patrol order recorded in 2025 remains actionable intelligence when quantum hardware arrives. The strategic sensitivity window for naval operational traffic typically exceeds the protection horizon of current encryption standards.

GPS-dependent navigation and timing systems on naval platforms and satellites are vulnerable to jamming and spoofing attacks that can displace platform position data, corrupt timestamping in communications systems, and degrade coordination between distributed assets. Communications systems that depend on GPS-derived timing or location data inherit this vulnerability. A C2 protocol that does not depend on GPS-derived data cannot be degraded by GPS denial operations.