spire-emblem Sense™

Operate Intelligently
More Ships, More Often

Advanced Maritime domain awareness

Satellite AIS reveals the majority of vessel movements taking place in the open ocean and remote places that Terrestrial AIS simply cannot reach. By combining both data sources and advanced analytics, Spire Sense provides a complete and up-to-date reference on over 300 thousand unique ships with a single API call.


Avg. Latency
Avg. Unique MMSI'S
Avg. Messages

Industry-leading Improvements

Spire's launch strategy has new satellites entering orbit nearly every month. That pays large dividends in revisit time - the ability to see more ships, more often. Continuous on-orbit satellite software upgrades lead to immediate improvements for customers, like boosts in unique MMSIs and messages collected. No other AIS provider makes system-wide improvements as fast as Spire.

[How Our Data Compares ]
latency graph 1
latency graph 2
“We think about improvement on an exponential level - not linearly. That’s why we iterate quickly with new hardware, new software, and new launches. With each percentage improvement, we get closer to doubling our performance again”
Peter Platzer, Spire

Data Services Products

01 03

Vessels API

Easily track and visualize ships with Spire’s custom, constantly-updating vessels database. Access ship details along with positions and voyages. Quickly filter by area of interest, ship type, flag country, MMSI, IMO, arrival times, and more.

02 03

Messages API

Work with decoded and cleansed AIS messages plus retrieve data from the 7-day archive. Create a custom stream based on area of interest, message type, collection type, flag country, and MMSI.

03 03

Predict API

With typical AIS, you only know where a ship has been - not where it is or where it will be. Predict gives you, with confidence, an accurate location for where a ship is right now.


Access Constellation Analytics

Customer Portal


SpireSense API Documentation

Developer Portal



August 25, 2017
August 25, 2017

Maine Lobster Beginning to Roll In

Lobster is not only seen as a luxury food item but, according to the Maine Department of Marine Resources, is an over $500m industry with over 130m pounds of the crustacean caught in the Gulf of Maine last year alone.

August 16, 2017
August 16, 2017

Defrosting the Mysteries of the Arctic Circle

The Arctic Circle isn’t a place that one would commonly think of as bustling with human activity. Most of the time it is not, but as the North Pole warms and sea ice melts during the summer months, the region becomes a bustling metropolis of ship movement.

Learn More

Learn about how we utilize data at Spire and how we funnel those into other platforms and mediums.

Global GPS-RO Data



Eyes in the sky


View All Terms

The Spire Reference is a collection of miniature articles about topics mentioned throughout the Spire website. Each topic contains additional citations for further reading.