SIGNALCapital Markets·Jul 6, 2026, 5:32 PMSignal75Medium term

The next frontier for defence companies is the deep blue sea

Countries have a whole host of relatively new vulnerabilities lying on the seabed

Why this matters
Why now

The increasing reliance on subsea infrastructure for global communication and energy, coupled with geopolitical tensions, makes these vulnerabilities a priority.

Why it’s important

This highlights a critical new theatre for defense and potential points of international conflict, requiring advanced technological solutions.

What changes

Defense strategies will increasingly focus on protecting and potentially disrupting subsea assets, expanding the scope of military operations and R&D.

Winners
  • · Defense contractors specializing in maritime, sonar, and autonomous underwater v
  • · Naval forces with advanced subsea capabilities
  • · AI/ML companies for subsea intelligence
Losers
  • · Nations with extensive, unprotected subsea infrastructure
  • · Commercial entities reliant on vulnerable undersea cables and pipelines
Second-order effects
Direct

Increased investment in subsea surveillance and protection technologies by nations concerned about critical infrastructure.

Second

Development of new offensive and defensive doctrines for warfare in the deep sea, potentially leading to an arms race in this domain.

Third

The weaponization of marine robotics and AI to achieve strategic advantages in contested subsea environments, shifting global power dynamics.

Editorial confidence: 90 / 100 · Structural impact: 60 / 100
Original report

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Read at Financial Times — Technology
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