Quartermaster, a Arlington, VA-based builder of the world's largest maritime awareness network, has raised $43M in Series A funding co-led by First Round Capital and Quiet Capital. The company transforms civilian and commercial vessels into a distributed sensing layer using vessel-mounted HD video, geolocation, AI-powered multimodal detection, and resilient satlink for real-time ocean visibility. The capital will expand deployments of its SmartMast system and grow the team.
Distributed Sensing Disrupts Satellite MDA
The timing comes amid a shift from centralized satellite and radar systems to distributed vessel-mounted sensor networks for persistent coverage. Quartermaster's approach turns commercial fleets into a scalable sensing mesh, addressing gaps in traditional maritime domain awareness where vessels can opt out of or spoof AIS.
Vast Ocean Coverage Gaps Persist
The ocean covers 71% of the planet and carries 80% of global trade yet remains one of the least digitized environments. Quartermaster has identified 400k vessels without AIS and covered more than 10M nautical miles with its fleet, highlighting the scale of blind spots that current systems leave unaddressed.
Vessel Network Creates Hive Mind
Quartermaster built SmartMast, a vessel-mounted system with camera, satcom, battery, computer, cabling, and display that turns working vessels into nodes in a global network. Unlike point solutions focused on onboard collision avoidance or satellite analytics, the platform aggregates verified, timestamped HD video across hundreds of vessels for real-time alerts and incident response.
As CEO Neil Sobin noted:
"In maritime, AIS is a completely broken system… you can simply opt out of the system, or spoof it."
Mission Capital Validates Sensing Thesis
First Round Capital and Quiet Capital co-led the round, joined by maritime specialists TMV Logistics, Shorewind Capital, Steel Atlas, BoxGroup, Operator Partners, and angel David Adelman. The mix signals strong conviction in data-platform plays that combine hardware deployment with network effects, validating Quartermaster's dual hardware-software model for ocean intelligence.
Maritime Surveillance Market Expands
The maritime surveillance market stands at $26.37 billion in 2025 and is projected to reach $50.93 billion by 2035 at 6.9% CAGR. Key drivers include rising illegal fishing, piracy, offshore energy security needs, and regulatory pressure for maritime transparency, alongside policy tailwinds from US government pushes for AI-enabled maritime surveillance exports.
Team Expansion Underway
The company recently leased a 13,000 sq ft office in Arlington Tower and announced it is hiring across the company to support growth of its pro-mariner sensing fleet. Deployments already span 25 countries across four continents with assistance in over 20 rescues at sea.