Quartermaster: The $43M Bet That 600 Ships Can See Everything Your Satellites Can’t

The global ocean is the largest unmonitored space on Earth. This Arlington startup is fixing that — one mast at a time.

Ninety percent of everything you own arrived by ship. Roughly 100,000 commercial vessels are moving across the world’s oceans at any given moment. And most of what happens out there — who’s near who, what’s being loaded or offloaded, whether a vessel is running dark — is invisible.

Not because the technology to see it doesn’t exist. Because nobody built …