Underwater Drones and the Future of Naval Warfare || Peter Zeihan

Zeihan on Geopolitics
Zeihan on GeopoliticsMay 1, 2026

Why It Matters

The rise of low‑cost surface drones and armed cargo ships threatens to destabilize maritime security, forcing navies and commercial fleets to adopt new defensive technologies and doctrines.

Key Takeaways

  • Underwater drones limited by range and detection, unlikely major role.
  • Surface maritime drones prove effective, as shown by Ukrainian tactics.
  • Existing torpedo tech already fulfills underwater drone functions.
  • Future conflicts may see cargo ships armed with drones for self‑defense.
  • Airborne drones remain best option for countering surface drone threats.

Summary

In a recent Patreon‑question response, geopolitical analyst Peter Zeihan argues that underwater drones will not reshape naval warfare, while surface‑borne maritime drones are poised to become a disruptive force.

He points out that underwater platforms suffer from fundamental physics: limited battery energy, poor optics and a short detection radius, meaning their range and strike capability remain comparable to traditional torpedoes. By contrast, cheap surface drones—essentially motor‑boats or jet‑skis fitted with explosives and remote‑control systems—have already demonstrated hundreds of miles of operational reach, especially after the Ukrainian war showcased their lethality against larger warships.

Zeihan cites the Ukrainian use of improvised “suicide” jet‑skis that forced Russian vessels to resort to deck‑mounted machine guns and RPGs, a clearly ineffective defense. He also warns that as global naval patrol capacity shrinks, commercial vessels will likely be equipped with their own weapon systems, most probably airborne drones, to intercept incoming surface threats.

The shift toward inexpensive surface drones and armed merchant ships could erode traditional naval dominance, compel navies to develop new counter‑drone tactics, and reshape the security architecture of congested waterways such as the Taiwan and Japan Straits.

Original Description

Drones have been all the rage in the Ukraine War, and they will continue to be one of the primary topics of warfare in the near future, but do underwater drones have any place in this conversation?
Note: This video was recorded last year during one of Peter's backpacking trips.
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