Market Overview
Comparing AIS Data API Providers
An honest overview to help you choose the right maritime data provider.
Key Takeaways
- 1All three providers offer core vessel tracking, positions, and particulars data — feature parity for most use cases
- 2Data Docked provides self-serve signup from 80 EUR/mo vs enterprise-only pricing at MarineTraffic and €330 minimum at VesselFinder
- 3Enterprise providers offer longer historical archives (10-15+ years) — Data Docked focuses on accessible pricing and unique PSC inspection data
Transparency note: This comparison is published by Data Docked. We aim to be factual and fair, drawing on official API documentation, consultations with maritime data experts, feedback from customers of multiple providers (including those who have switched between vendors), and public reviews from G2, Trustpilot, Reddit, and maritime community forums.
Last updated: February 2026. Pricing, features, and policies may have changed since this date. Despite our best efforts, some information may be incomplete or interpreted incorrectly. We encourage you to verify details on provider websites before making decisions. This content is for informational purposes only and does not constitute professional advice.
Provider Profiles
How to chooseMarineTraffic
The industry leader in vessel tracking, acquired by Kpler in March 2023. The largest AIS network in the world. Offers Basic, Essential, and Enterprise plans (removed credit system January 2025). Enterprise plan requires contacting sales.
Key Strengths
- Widest breadth of maritime data available
- Low latency (~5 seconds average per Kpler)
- Most established brand in the industry (6M+ monthly visitors)
- Largest AIS network in the world (terrestrial + satellite)
Best For
VesselFinder
Credit-based AIS API with global terrestrial and satellite coverage. Historical AIS archive dating back to 2009. Pricing starts at €330 for 10,000 credits. Has PHP and Python API wrappers on GitHub.
Key Strengths
- Global terrestrial and satellite AIS coverage
- Historical AIS archive since 2009
- Credit-based pricing (€330/10k, €625/20k, €1,470/50k credits)
- Both JSON and XML response formats
Best For
Data Docked
This siteDeveloper-focused maritime data API combining satellite and terrestrial AIS with transparent, predictable pricing. A practical choice for teams who value straightforward integration and cost transparency.
Key Strengths
- Transparent credit-based pricing (from 80 EUR/month)
- Pay per request with no hidden fees
- Developer-friendly documentation and onboarding
- Combined satellite + terrestrial AIS coverage
Best For
Where Providers Stand
A visual comparison of entry cost vs feature breadth. Hover over providers for details.
Hover over a provider to see details
Compare Features
| Feature | Data DockedYou are here | MarineTraffic | VesselFinder |
|---|---|---|---|
Real-time vessel positions | |||
Satellite AIS coverage | |||
Historical track data | 2 years | Archive since 2010 (API: 190-day lookback) | Archive since 2009 |
Vessel particulars | 3 credits per request | ||
PSC inspection records | All 9 MOUs + USCG | ||
Uptime SLA | 99.9% | Enterprise SLA (contact sales) | Not documented |
Pricing model | Credits from 80 EUR/mo | Basic/Essential/Enterprise tiers | Credit packages (€330–€1,470) |
Entry-level cost | 80 EUR/month | Contact sales | €330 for 10,000 credits |
Last updated February 2026. Verify on provider websites before deciding.
Why Developers Are Searching for Alternatives
Recent market consolidation has changed the AIS data landscape. Understanding these shifts explains why many teams are evaluating new providers.
Kpler Acquires MarineTraffic
Kpler, a commodities data company, acquires MarineTraffic to expand into maritime analytics. This marks the beginning of major market consolidation.
Kpler Acquires FleetMon
Kpler also acquires FleetMon in a coordinated deal, combining three maritime data providers under one umbrella.
MarineTraffic Removes Credit System
MarineTraffic discontinues credit-based pricing, switching to enterprise subscriptions only. Users must now contact sales for pricing.
Kpler Acquires Spire Maritime
Kpler acquires Spire Maritime, gaining the largest proprietary satellite AIS constellation with 100+ nanosatellites.
Kpler Acquires MarineTraffic
Kpler, a commodities data company, acquires MarineTraffic to expand into maritime analytics. This marks the beginning of major market consolidation.
Kpler Acquires FleetMon
Kpler also acquires FleetMon in a coordinated deal, combining three maritime data providers under one umbrella.
MarineTraffic Removes Credit System
MarineTraffic discontinues credit-based pricing, switching to enterprise subscriptions only. Users must now contact sales for pricing.
Kpler Acquires Spire Maritime
Kpler acquires Spire Maritime, gaining the largest proprietary satellite AIS constellation with 100+ nanosatellites.
The result: Enterprise-focused pricing, reduced flexibility, and growing demand for developer-friendly alternatives with transparent, credit-based models.
Find Your Ideal AIS Provider
Answer a few questions about your needs and we'll help you determine which AIS data provider is the best fit.
What is your monthly budget for maritime data?
Consider your total expected spend including all API calls.
What Users Are Saying
“Service terminated without notice after Kpler acquisition. Had to pay more than double for the same service.”
“Costs add up fast—satellite, analytics, vessel count—it is all separate billing.”
“The satellite systems and availability of data APIs support our startup in delivering solutions that generate value.”
“Would almost call it a scam—other free sites provide exactly the same. MarineTraffic costs $900 USD per year.”
Feedback from G2, Trustpilot, Reddit, and forums. Last updated February 2026.
How to Decide
Full guideDo you need API access or a consumer tracking app?
Predictable (subscription) or variable (pay-per-use)?
Do you need historical data? How far back?
What uptime and support guarantees do you need?
Common Questions
Ready to Try Data Docked?
Start with a free trial — 20 credits to test our API with no commitment.