MarineTraffic vs VesselFinder: A Practical Comparison for Maritime Professionals

Vessel tracking platforms are not hobbyist tools — they are working instruments for surveyors, port agents, cargo superintendents, and fleet operators who need accurate position data before a vessel arrives.

This comparison covers MarineTraffic, VesselFinder, and ShipFinder across free and paid tiers, written from the perspective of someone who uses them professionally, not recreationally.

I check MarineTraffic before every survey to confirm ETA and verify declared draught against the last port of call, and also get a quick size and layout overview.

How Do MarineTraffic and VesselFinder Actually Work?

Both platforms receive and display AIS data — Automatic Identification System signals broadcast by vessels and collected by shore-based receivers or satellites. AIS carriage is mandatory under SOLAS Chapter V for vessels of 300 GT and above on international voyages, and all passenger ships regardless of size.

The critical distinction for professional users is between terrestrial AIS and satellite AIS. Terrestrial AIS relies on shore-based receivers within VHF range — typically 40 to 60 nautical miles from the coast. Satellite AIS captures signals from vessels anywhere on the ocean, including mid-ocean passages outside coastal receiver range.

Free accounts on both MarineTraffic and VesselFinder show terrestrial data only. If the vessel you are tracking is mid-Atlantic or mid-Pacific, a free account shows nothing. A cargo superintendent monitoring a vessel’s ETA three days out will see the last known coastal position — not the vessel’s current position.

What Do You Get on the Free Tier?

The free tier is where most professional one-off checks happen — a surveyor confirming ETA, a port agent checking last port of call, a P&I correspondent verifying a declared cargo route. The table below reflects known free-tier capabilities on both platforms as of early 2026.

MarineTraffic has progressively moved vessel history data behind its paywall since 2023. VesselFinder currently exposes more vessel particulars and port call history on the free tier.

I used to reach MarineTraffic first on mobile, but service limitations force me to check for alternatives when I hit the limits. For a quick, free check, VesselFinder now delivers more data before prompting an upgrade.

Is ShipFinder Worth Using?

ShipFinder is a lighter platform developed by Pinkfroot Limited and available on the App Store for a one-time payment of £4.99. AIS data coverage is narrower than both MarineTraffic and VesselFinder, and the vessel database is smaller.

The app tracks 30,000+ ships simultaneously and includes augmented reality vessel identification — point your device at a vessel and the app overlays name, type, and AIS data. Filters, search, night mode, and bookmarks are included in the paid version.

The web service at shipfinder.co has a poor and outdated UI with limited information — it is not a usable professional tool in its current state. The app itself is functional for basic coastal position checks, but coverage gaps are real: users report losing vessels mid-ocean, which reflects the absence of satellite AIS. For a maritime professional who needs reliable port call history, extended track data, or comprehensive vessel particulars, ShipFinder is not a replacement for either main platform.

The app was last updated for iOS in November 2018, which raises questions about ongoing development. It suits budget users or occasional tracking in well-covered coastal areas, not professional operational use.

What Do Paid Plans Cost in 2026?

VesselFinder — Verified Pricing (April 2026)

The Satellite 24-hour pass ($12) is a practical option for surveyors who need one-day satellite coverage without a monthly commitment. The Premium plan at $39/month gives 7-day track history and 500-ship fleet monitoring — sufficient for most port agents and cargo superintendents.

Note: VesselFinder subscriptions do not renew automatically. API access and historical data are sold separately, not bundled with any subscription plan. The iOS app requires a paid purchase; Android is free.

MarineTraffic — Verified Pricing (April 2026)

All plans cover terrestrial vessel tracking. Prices are per user and exclude VAT. The Basic plan at £10/month covers 10 vessels with 100 notifications monthly — suited to an individual surveyor or port agent doing occasional fleet checks. The Essential plan at £100/month is single-vessel but unlocks 7-day track history and 300 notifications — the right tier for detailed voyage reconstruction on a specific vessel.

The Enterprise plan is quoted on request and covers unlimited notifications, 5,000 vessels, 2,000 custom areas, and up to 5 years of track history. Satellite AIS is not listed as a standard feature on the published terrestrial plans — contact MarineTraffic sales for satellite coverage pricing.

MarineTraffic has the more established commercial API, reflecting its larger receiver network and longer institutional history. For fleet operators with budget authority, request demos from both platforms before committing — Enterprise pricing is negotiable at volume.

Which Platform Should You Use?

The right platform depends on your role and how often you need the data.

For ship enthusiasts and family members tracking a specific vessel: VesselFinder free tier. It shows more vessel particulars without requiring an account upgrade, and the interface is cleaner for infrequent use.

For professional one-off checks — cargo superintendent, port agent, marine surveyor: MarineTraffic. The professional interface shows more operational context per vessel, and the port call history is more useful for voyage reconstruction.

When a cargo superintendent is checking whether a vessel deviated from its declared route — relevant for a cargo plan discrepancy — MarineTraffic’s track display is the more functional tool.

For bunker surveyors: MarineTraffic for ETA confirmation and draught verification against last port of call. The bunkering sequence and documentation requires knowing the vessel’s recent port history and nominated next port — this is the data field where the two platforms differ most in free-tier accessibility.

For fleet operators with 10+ vessels: MarineTraffic Professional Plus. Fleet management, alerting, and event logging are more developed than VesselFinder’s equivalent offering.

For budget-conscious users who need satellite coverage: VesselFinder Satellite is the cheaper entry point. If you are monitoring a passage rather than managing a fleet, VesselFinder satellite coverage at a lower cost is the rational choice.

For port agents monitoring arrivals: Either platform works for ETA verification. For the berthing approach and pilot boarding point coordination, a port agent needs current draught and beam — both available free on either platform.

How Do the Mobile Apps Compare?

The MarineTraffic mobile app is the more feature-complete of the two. It includes augmented reality vessel identification, weather overlay, and a larger underlying vessel database. The AR feature is useful during port approaches and for identifying nearby vessels quickly — relevant when coordinating with a vessel approaching a berth for a survey.

VesselFinder’s app is simpler and faster for a single-vessel position check. The free version is more capable relative to its desktop free tier — it shows more data before prompting an upgrade. I use the VesselFinder app for quick position checks when I am in port and need a vessel’s ETA without logging into a browser.

ShipFinder’s app costs £4.99 as a one-time purchase with no ongoing subscription. Its AR functionality works in areas with good AIS coverage. Last updated in 2018, it lacks satellite AIS and has known coverage gaps in some major ports — confirmed by user reviews. The GMDSS equipment and communication standards a professional relies on require accurate vessel identification; ShipFinder’s coverage gaps make it unreliable for operational use.

What Neither Platform Shows You

This is the section that most vessel tracking articles omit — and the one that matters most for professional use.

AIS can be switched off. A vessel that does not appear on MarineTraffic or VesselFinder is not necessarily stationary or not operational. Certain vessels — particularly fishing vessels and some naval or government vessels — disable AIS intentionally. Vessels engaged in sanctioned trades have also been documented operating with AIS off or intermittently. Absence from the platform is not evidence of absence.

AIS positions can be spoofed. Position spoofing — transmitting false GPS coordinates via AIS — has been documented in the Black Sea, Persian Gulf, and other high-scrutiny regions. Neither MarineTraffic nor VesselFinder can independently verify that a vessel’s transmitted position matches its actual position. If a P&I surveyor or insurer needs verified position data, AIS alone is insufficient.

Draught data is self-reported. The draught figure shown on any platform reflects what the officer of the watch entered into the AIS transponder. It is not measured in real time, is frequently not updated after departure, and may reflect arrival draught, departure draught, or a ballast estimate. Never use AIS draught data as a substitute for a physical draught survey.

ETA and destination are manually entered. The destination field and ETA on AIS are typed by the crew — often abbreviated, frequently outdated, and sometimes entirely wrong. Do not use AIS ETA for precise voyage planning or contractual arrival time calculations. Passage planning professionals know that AIS ETA is an indicator, not a commitment.

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Dmitry

I worked as an officer in the deck department on various types of vessels, including oil and chemical tankers, LPG carriers, and even reefer and TSHD in the early years. Currently employed as Marine Surveyor carrying cargo, draft, bunker, and warranty survey.

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