ARLINGTON, Va. - Quartermaster, a startup that puts cameras and radios on ship masts to track maritime activity, has closed a $140 million Series B, just months after a $43 million Series A in May. Because nothing says "we're onto something" like raising triple the amount before the first round has time to gather dust.

The round was preempted by Insight Partners, a software-focused venture firm, and the interest was helped along by the war in Iran and the shipping chaos it caused. Founder and CEO Neil Sobin said the global mess gave investors "huge amounts of conviction in the core thesis." Nothing like a geopolitical crisis to sharpen the pitch deck.

About $100 million came from Insight, new defense-focused investor Overmatch Ventures, and existing backers like First Round Capital. The remaining $40 million is a debt facility from investment bank Stifel. So yes, Quartermaster is now flush with cash and presumably a very nice nautical-themed office.

The company's hardware, called "SmartMast," is exactly what it sounds like: cameras and radios strapped to a ship's mast, capturing and relaying real-time maritime data. This is a step up from AIS (Automatic Identification System), which is basically just a series of location pings - like a game of Marco Polo, but with more cargo and less pool.

Quartermaster calls the ocean the "largest blind spot on Earth," and its data could help ships avoid collisions, understand congestion in shipping lanes, and even rescue lost mariners. Each SmartMast records tens of gigabytes per day, and customers are still figuring out what to do with all that footage. Sobin noted there's "not a lot of prior art in maritime AI," which is a polite way of saying the industry has been stuck in the age of semaphore.

"This is an ignored field," Sobin said. "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.'" Finally, someone is listening to the people who spend months at sea with nothing but a satellite phone and scurvy for company.

More than 650 vessels in 25 countries now have SmartMast installed, and Quartermaster has shipped over 800 units. The gap between shipped and installed is because the company is about to start deploying entire fleets - a sign that early adopters are really, truly, deeply buying in. To keep up, Quartermaster has doubled its manufacturing capacity and is tweaking its design for faster production.

"We know we can do this, and we are seeing a lot of proof that tells us we're really onto something massive and important in the world," Sobin said. "So, what do you do when you have that position? You run faster and you move faster and you double down on that strategy." Which, in startup-speak, means: spend the $140 million before the next geopolitical crisis makes you look prescient.