Marine AIS Data

Maritime AIS Data for vessel tracking

Your trusted source of data powering the most innovative organizations in the maritime industry.

Configure your AIS data solution

What we do at Spire Maritime

Spire is the unrivaled open ocean and shore coverage provider revolutionizing how​ maritime data is collected, analyzed, and delivered, to improve supply chain tracking​ and route optimization,​ insurance and compliance,​ commodity intelligence, environmental monitoring, etc.​

We aim to lead the maritime industry’s digital transformation by expanding our open ocean and shore coverage, delivering the most accurate and comprehensive vessel tracking data through cutting-edge technology, and enabling unprecedented insights that empower maritime stakeholders to make the best-informed decisions.​


shipping activity at sea

Why choose Spire Maritime?

Most complete source of AIS data

Spire Maritime has the largest proprietary constellation and highest volume of messages tracked by satellite, Detecting over 600K vessels and 250K active vessels per day. We offer the most complete picture of AIS data on the market with data dating back to 2010.

Only constellation providing real-time AIS on the market with latency of less than 1 minute

This offers up-to-date and accurate view of the world’s shipping activities with 24/7 global coverage.

Track vessels anywhere and at any moment in time

Increase your situational awareness by accessing vessel positions worldwide or in areas of interest.

Leverage accurate and actionable data

Make better‑informed decisions, even in highly congested traffic areas, with enhanced vessel detection.

Accessible through modern APIs

Designed by developers, for developers.

Best in class support including:

  • Continuous Support (live technical and customer support, including onboarding and developer documentation)
  • Accessible through Modern APIs designed by developers, for developers
  • Easy integration with support from dedicated Spire engineers
  • 24/7 global satellite coverage
  • Wide array of digital resources

Configure your AIS data solution

What is AIS vessel tracking data?
Are you a developer? Start here
How are our customers using AIS?

  • AIS Position Validation New!

    Uncover suspicious vessel behavior, worldwide and in real-time

    By utilizing our satellite constellation and experience with radio frequency doppler shift, Spire Maritime is the first to deliver a near real-time, global AIS message position validation service.

    Learn more about AIS Position Validation

Our range of Maritime AIS data solutions for vessel tracking

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Standard AIS

Unrivaled ocean coverage, data quality, and developer-friendly AIS APIs with Standard AIS.

Standard AIS

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Real-time AIS data

The highest-frequency AIS data empowers you to track in real-time the world’s shipping activities.

Real-time AIS

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Historical AIS data

Historical AIS vessel tracking data going back to 2011, delivered via fast APIs or one-time downloads.

Historical AIS

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AIS Position Validation

Advanced RF signal-based vessel detection & tracking to validate vessels’ positions.

AIS Position Validation


Easy-to-use ship tracking web application that leverages our global Maritime AIS data.

Discover ShipView™

Optional premium features available

Enhanced Satellite AIS

Enhanced Satellite AIS fills in the gaps in global AIS ship tracking data, especially in High Traffic Zones.

Enhanced S-AIS

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Vessel to Port ETA

Get more reliable, machine-learning powered port ETAs and route predictions for specific vessels.

Vessel to Port ETA

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Port Events

Get access to worldwide port events, including terminal and anchorage events, in a convenient API.

Port Events

Vessel Characteristics

Detailed vessel data: ownership, build, technical information, registration, capacity.

Vessel Characteristics

Why Spire Maritime data?

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Data collected from multiple sources

We combine Satellite AIS, Terrestrial AIS, and Enhanced Satellite AIS, to provide wide coverage and give our customers a serious competitive edge.

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Unique coverage in high‑traffic zones

Enhanced Satellite AIS collects data in busy shipping lanes, providing unprecedented coverage, especially in the most congested areas.

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Convenient delivery methods

We deliver live maritime tracking data through easy-to-use APIs or live feeds (TCP raw NMEA), as well as custom historical data file delivery.

Continuously improving data

New satellites added to our constellation each year means a constant increase in quantity and quality of data delivered and reduced latency.

Documentation and
live support

Get started quickly with our global technical and customer support, customer-centric on-boarding, and detailed documentation.

Use cases

What is Spire AIS Data useful for?

Application Development

Our maritime data is ideal to develop applications that integrate vessel tracking and maritime information.

Learn more

Defense & Security

Reliable, real-time maritime data for enhanced situational awareness and smarter decision-making when every second counts.

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Insurance &

Leverage Spire Maritime’s data for enhanced decision-making in insurance and compliance sectors.

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Fleet Management

AIS data is essential in running an efficient, compliant and profitable fleet, and ensuring the safety of crew and vessel.

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Logistics & Supply Chain

Access data that minimizes the impact of supply chain disruptions, as well as reliable ETAs to optimize port resources.

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Oil and Gas

Make remote asset tracking and protection easier with our data, and significantly mitigate risk in remote regions.

Learn more

Port Operations

Get access to accurate data to optimize short- and long-term port operations and allocate resources effectively.

Learn more

Illegal Fishing

Our data helps to establish and monitor fishery protection measures against overfishing or illegal fishing.

Learn more

Environmental Protection

Preserve ecossystems using data by identifying breaches into protected or sensitive areas.

Learn more

Search and Rescue

Maritime data empowers shore-side authorities in risk and vulnerability analysis and resource planning.

Learn more

Customer testimonials

“The accuracy, the availability, and the redundancy of the data feeds we get from Spire Maritime, these elements are really critical in Starboard’s ability to provide a robust and trusted service.”

Trent Fulcher
CEO, Starboard Maritime Intelligence

“What I like about working with Spire is that we get data from a lot of different sources. I can definitely recommend working with Spire for anyone who is looking for fast innovation and accurate data.”

Michiel Valee
Co-founder and Tech Lead, Dockflow

“It’s been really fantastic how flexible Spire has been, and how they have been able to work with us on an individual basis to make sure that the data fits our needs.”

David Kroodsma
Director of research and innovation, Global Fishing Watch

“Partnering with Spire was a great decision for our team, it’s given us the highest quality AIS data that we could find, which is fundamental to the platform that we’re building.”

Gary Lloyd
Chief of Architecture and Strategy, 90POE

“Getting the Spire information allowed us to develop a predictive tool with a hight degree of situational awareness.”

Art Salindong
Founder and CEO, Trabus Technologies

“The customer focus has really been what keeps us within Spire.”

Ingvi Georgsson
Co-Founder, Styrid