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Ocean surveillance startup Quartermaster raises another $140M

Ocean surveillance startup Quartermaster raises another $140M

techcrunch.com 28.09.2026 15:00 4 views
The tech enables real-time awareness for what Quartermaster calls the “largest blind spot on Earth.”

Arlington, Virginia-based startup Quartermaster in May closed a $43 million Series A around its idea of using weather-hardened sensors to capture data and generate insights about maritime activity. That idea has proven popular, because Quartermaster has already closed a much larger Series B, bringing in $140 million this time. Founder and CEO Neil Sobin said the round was preempted by software-focused venture firm Insight Partners, and the interest in what Quartermaster is building was helped by the war in Iran and the shipping chaos it’s caused.

The remaining $40 million came in the form of a debt facility from investment bank Stifel. The startup integrates cameras and radios into a package that’s mounted on a ship’s mast, and can capture and relay real-time maritime data. This allows governments, shipping companies and insurance providers to know far more than the current standard of AIS, or the “automatic identification system,” which is more or less just a series of location pings.

This real-time awareness data creates all kinds of opportunities for what Quartermaster calls the “largest blind spot on Earth.” Everything from helping ships avoid collisions, to better understanding congestion in shipping lanes, to rescuing lost mariners is on the table. Sobin said each SmartMast records tens of gigabytes per day, and the startup and its customers are still finding new uses for the data being captured. Mariners around the world have been ignored by technology for a really long time, and so when they meet us, they’re so excited, because they’re like: ‘Oh, I have so many ideas, let’s work on them’,” he said.

More than 650 vessels are now equipped with SmartMast in 25 countries, Sobin said, and the startup has shipped over 800 to customers. That gap is largely driven by the fact that Quartermaster is about to start deploying the SmartMast system to entire fleets, a sign that early adopters are really buying into the idea. Quartermaster has had to hustle to keep up with demand, Sobin said.

The startup has doubled its manufacturing capacity and continues to tweak its design so its hardware can be manufactured at a quicker clip. You run faster and you move faster and you double down on that strategy.”

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