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Caladh

Caladh is a YC Fall 2026 (F26) company. Based in Boston, MA, USA.

  • Hard Tech
  • Hardware
  • Drones
  • Maritime
  • Defense

About Caladh

GPAgent's own fund-neutral profile, written from public information. Updated Nov 2, 2026.

Summary

Caladh builds anti-drone defense systems for the maritime domain, protecting ports, vessels, and critical waterside infrastructure from unmanned threats above and below the waterline. Its systems detect, track, and neutralize both aerial and underwater drones before they can reach their targets, replacing ad hoc or manual threat response with purpose-built counter-UAS capability.

From the Y Combinator listing

How Caladh describes itself in Y Combinator's public directory.

Anti-drone defense for the maritime domain

Caladh protects critical maritime infrastructure from drone attacks above and below the waterline. Our systems detect, track, and defeat unmanned systems so they can't get near the assets they want to disrupt.

Facts

Industry
Industrials / Industrials -> Defense
Location
Boston, MA, USA
Status
Active
Stage
Early

Founders (1)

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