Danish startup lands €1M for underwater sensor network

Triton Depth, a Copenhagen-based startup founded in 2025 by three DTU engineering students, has raised €1 million in pre-seed funding to build underwater monitoring technology aimed at Europe’s growing maritime security risks.

The company says it wants to tackle one of the EU’s most exposed security gaps: the seabed. That includes threats tied to Baltic cable sabotage, shadow-fleet activity, and underwater drone warfare. Its backers include London-based The Creator Fund and Denmark’s state-owned Export and Investment Fund (EIFO).

Triton Depth’s system centers on what it calls “Triton Nodes” — a scalable network of low-maintenance passive acoustic sensors. These sensors capture underwater sound and send the data to a model that identifies and classifies vessels or other objects in real time.

Chief executive and co-founder Carl Borg said the startup wants to build “the intelligence layer for the ocean” for both civilian and defense applications. The dual-use pitch is part of the appeal: cheaper acoustic monitoring could offer Denmark and other European countries a more affordable way to watch subsea infrastructure than traditional naval systems.

The timing is notable. Denmark and the wider region have become more sensitive to underwater vulnerabilities after sabotage incidents in the Baltic, including the destruction of Nord Stream 1 and 2. The article notes that more critical infrastructure — from power interconnectors and data cables to offshore wind — now sits underwater, increasing the need for persistent monitoring.

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Other European governments are also looking for scalable ways to monitor coastal and subsea assets as Nordic defense budgets rise, and Triton Depth is one of several companies trying to meet that demand.