“Should we use you, MarineTraffic or VesselFinder? “
It is a question we are asked directly, and it deserves a straight answer rather than a sales pitch.
The short version: if you are an individual who needs vessel positions, or a business looking for standalone AIS data feeds, VesselFinder is a sensible place to start. If you are a large organisation building a corporate maritime data capability, MarineTraffic and the wider Kpler platform are built for that scale. If you are an operational team sharing responsibility for a fleet, from a three-person operation to a security or management team of dozens, that is the buyer we built BigOceanData for.
Start with a feature comparison, but do not stop there
A feature comparison is a reasonable place to start, and it is one we are comfortable having: on capability depth, from zone logic and scheduled automation to security workflows and multi-year track replay, we compare well against anyone in this market. But a feature matrix is one part of the decision, not the whole of it, because the differences that decide whether a platform works for you rarely fit in a checkbox. Who does the alert reach? How far back does the history go? Is the picture shared across a team or fragmented across accounts? What can the tool do when watching a vessel has to become acting on one? Those differences come down to three questions.
Who is watching? If the answer is one person, the economics and the design of an individual subscription make sense. If the answer is a team, several people sharing responsibility for the same vessels, the question becomes whether the tool understands that. An alert that goes to one inbox, a zone that lives in one account, and an investigation that depends on forwarded screenshots are not small inconveniences. They are how things get missed.
What are you responsible for? There is a real difference between watching vessels and managing them. Watching means knowing where ships are. Managing means alerts that reach the person on duty, zones that reflect how your operation works, reports that go to the people who need them, and a history you can replay when something goes wrong. A watchlist of two thousand vessels and a managed fleet of thirty are different jobs, and they suit different tools.
What happens when something goes wrong? This is the question asked least often at purchase and it matters most in practice. When there is a collision, a claim, a sanctions question or a vessel behaving unusually, the answer is rarely in today’s positions. It is in the pattern: how far back you can see, how quickly you can reconstruct events, and whether the whole team can look at the same evidence at the same time.
Where VesselFinder fits
VesselFinder is strongest when the requirement is straightforward access to vessel information: live and satellite positions, short-term track history, port calls and vessel particulars through individual subscriptions, with standalone AIS data and API services for businesses. It is built on a large terrestrial receiving network, its free portal is one of the most used maritime sites in the world, and it does that job well. If your needs stop there, we would not try to talk you out of it. Where the requirement becomes shared operational workflow, team accountability, incident response and managed fleet monitoring, the fit becomes less obvious, because those are not the problems it is designed to solve.
Where MarineTraffic fits
MarineTraffic is the biggest name in the category and, as part of Kpler, sits alongside one of the deepest pools of maritime and commodity data anywhere, with long historical archives, extensive APIs and serious analytical reach. For large organisations feeding data programmes, analytics teams and trade desks, that is a strong fit. It also sells mid-tier plans for professionals. The distinction that matters for a team is not size but licensing: its published self-serve plans are licensed per seat, so fleet lists, zones and alerts live in each individual account, and broader team requirements typically become a sales-led conversation. BigOceanData starts from the opposite assumption: every plan is a shared workspace from day one.
Where BigOceanData fits
The gap sits in the middle, and it is where most working maritime teams actually live. Ship agents, fleet managers, security operations, fisheries bodies and port service companies: teams who share responsibility for a defined fleet, need more than an individual subscription offers, and should not have to enter a corporate procurement cycle for what ought to be a straightforward purchase.
This is the group we build for, and it starts with the data itself. BigOceanData combines multiple satellite and terrestrial AIS sources, cleaned, cross-checked and merged into one continuous feed, tracking 450,000 vessels through 24 million position reports every day. Every plan is a shared team workspace rather than a set of individual seats: one fleet list, one set of zones and alerts, one operational picture that everyone responsible for the fleet works inside. Every plan includes that same full data feed, because we do not believe data quality should be a pricing tier. Every plan includes a full year of vessel history and track replay as standard, rising to three years from our Professional plan. Others offer deeper archives at enterprise level; our point is that a serious investigative history should not be gated behind an enterprise tier. And our plans are published, from $189 a month, so a team can see the cost, choose a plan and start the same day.
Two more differences do not fit a plan card: our people and our flexibility. Support here means a specialist team who know your fleet and care what happens to it, which is a large part of why 96% of our clients renew. And that support extends to engineering around your situation, integrating positions from onboard devices and other ship systems alongside AIS when standard tracking is not enough. When hostilities broke out in the Persian Gulf, a maritime service client needed to bring their vessel SARBAS home through the region. Over a single weekend our team set up frequent position updates using satellite communications beyond AIS, integrated into the same operational picture, and the vessel was monitored continuously until she was clear. Their Marine Director’s words, not ours: the solution “played a key role in de-risking the return of our vessel” and was “delivered with efficiency and professionalism throughout.” That is what support looks like when the people behind the platform know your vessels, not just your account number.
The comparison at a glance
| VesselFinder | MarineTraffic (Kpler) | BigOceanData | |
|---|---|---|---|
| Built for | Individuals needing positions and data feeds | Professionals (per-seat plans) and enterprise data programmes | Teams sharing a fleet, on published plans |
| Licensing model | Individual subscriptions | Per-seat self-serve plans; team and enterprise via sales | Shared team workspace on every plan |
| Vessel history included | 90-day track on its satellite plan | 7 days on its mid-tier plan; 5 years at enterprise | 1 year on every plan; 3 years from Professional |
| How you buy | Self-serve | Self-serve seats; enterprise via sales | Published plans from $189/month; Enterprise scoped directly |
Competitor details reflect published plans as of mid-2026 and may change; always confirm current offerings with each provider.
Where we stand
If you are one person who needs to know where ships are, an individual subscription will suit you, and VesselFinder is a sensible place to start. If you are a multinational building a maritime data capability, talk to the enterprise providers, MarineTraffic among them. If you are a team responsible for a fleet, with shared alerts, shared investigations and shared accountability, then you are the buyer the market has historically served least well, and you are exactly who we built BigOceanData for.
The best test is not a feature matrix, ours included. It is to ask what happened the last time something went wrong at three in the morning: who saw the alert, who could see the history, and how many screenshots were forwarded before everyone was looking at the same picture. If that question made you wince, bring us your fleet list and your current alert setup, and we will show you what they look like as one workspace.
Frequently asked questions
Is BigOceanData an alternative to MarineTraffic or VesselFinder?
For teams, yes. If all you need is to follow vessel movements and nothing more, an individual subscription from VesselFinder or MarineTraffic may be enough, and Kpler’s enterprise offering serves large corporate data programmes. BigOceanData is built for the ground in between: operations, security and management teams who share responsibility for a fleet and need one workspace, full satellite and terrestrial AIS on every plan, and each managed vessel carrying its own alerts, zones and history.
Do all BigOceanData plans include satellite coverage?
Yes. Every plan runs on the same combined satellite and terrestrial AIS feed. Plans differ by team size, vessel capacity and workflow features, never by data quality.
How much does BigOceanData cost?
Published plans start at $189 a month for the Essential Operations Workspace, which includes two users, 25 actively monitored vessels, full satellite and terrestrial coverage and a year of vessel history. Details are on our pricing page.
