How Quartermaster is Building the Distributed Data Network for the Ocean
Quartermaster, connecting every vessel on the water to create a comprehensive, real-time picture of our oceans, unlocking critical data insights that underpin a prosperous global maritime ecosystem, led by Neil Sobin, Matt Beck, and Steve Ribaudo, has raised $140 million, including a $100 million Series B led by Insight Partners with new participation from Overmatch Ventures, and a $40 million venture debt facility from Stifel. First Round Capital and Quiet Capital, who co-led the Series A in May, both returned, as did Steel Atlas, TMV, and others.
Quartermaster had not planned to raise capital in 2026, but rapid changes in the shipping and maritime industry widened the gap between fleet needs and existing solutions. Insight subsequently led a preemptive Series B to accelerate the company’s efforts to address that gap. The new financing will support engineering hiring and the addition of vessels to expand coverage across major fishing grounds and commercial shipping lanes worldwide.
The Ocean Got Harder to Navigate.
In late February, commercial vessels across the Gulf began receiving false navigation signals as military operations jammed and spoofed GPS to counter drones and missiles. Ships across Emirati, Qatari, Omani, and Iranian waters were affected, despite not being military targets.
The disruption quickly became an economic problem. The Dallas Fed reported that the closure of the Strait of Hormuz was initially driven largely by the need to adjust insurance contracts for oil tankers. By March, several major underwriters had stopped covering the region, sending maritime traffic through the Strait sharply lower.
War-risk premiums subsequently surged, reaching 7–10% of a ship’s insured value per voyage in July, more than 30 times February levels.
The result was a critical maritime chokepoint effectively shut down by the inability to price risk. Without reliable information about conditions around the Strait, insurers could not accurately assess exposure, and ships could not move without coverage.
You Can’t See the Ocean from Afar.
Most ocean visibility systems rely on signals, transmissions, or satellite imagery rather than direct observation. AIS identifies ships through self-reported signals, navigation systems derive positions from transmissions, RF systems triangulate radio emissions, and satellite imagery provides periodic snapshots.
Quartermaster takes a different approach by building a distributed network of vessels equipped with SmartMast sensors. More than 650 vessels across 25 countries currently participate, providing physical presence on the water.
Operators receive the hardware, installation, support, access to their own data, hazard alerts, and broadband connectivity at no cost. In return, SmartMast sensors contribute data to a network that provides insurers, fleets, and energy operators with a more direct view of ocean activity.
The Missing Data.
Every serious discussion about AI in trade, energy, or logistics eventually reaches the same constraint: the models are ready, but critical ocean data is missing.
That data cannot simply be captured from orbit or generated through models. It requires physical presence on the water and a network capable of collecting it at scale. Building that dataset is difficult and labor-intensive, but it represents a significant opportunity to create a new layer of intelligence for the ocean.
𝐑𝐞𝐦𝐨𝐭𝐞 𝐇𝐢𝐫𝐞 𝐨𝐫 𝐁𝐮𝐢𝐥𝐝 𝐖𝐢𝐭𝐡 𝐔𝐬: 𝐁𝐮𝐢𝐥𝐝𝐰𝐞𝐫𝐤𝐬 helps technology companies build in India: two ways. Hire vetted remote engineers, product leaders, designers, and GTM professionals directly onto your team. Or partner with a proven development studio to design, build, and ship your product end-to-end. Learn More At: menlotimes.com/buildwerks
