Quartermaster builds SmartMast, a package of weather-hardened mast-mounted sensors and an analytics platform that streams real-time maritime data from ships, creating a distributed sensing network the company describes as a hive mind for the oceans. The Arlington, Virginia-based startup positions its system as a richer alternative to AIS, supporting ship identification, marine autonomy training data, government intelligence, and search-and-rescue use cases. Its SmartMast units have been installed on more than 600 ships covering over 10 million square miles of ocean.
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Sep 28, 2026
Latest raise
Funding activity · 1 round
Sep 28, 2026
$140M
Series B
Led by Insight Partners
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