Frequently asked questions

Questions that come up often enough to be worth answering once. If yours is not here, talk to our team.

Data and events

Why do different port events carry the same timestamp?

A single AIS message can trigger more than one event at once, depending on how often the vessel is reporting.

PORT_AREA_ARRIVAL and PORT_ARRIVAL fire together when the first position inside the port boundary also shows the vessel has stopped. That is one observation satisfying two conditions, not duplicate data.

Concepts & Terminology explains why a port call is six events and not two.

Why does the vessels-in-zone-or-port endpoint not return full event detail?

What is the difference between area traffic and inbound vessels?

Can I query a custom zone by UNLOCODE?

A vessel disappeared from my results. Why?

Using the API

Is there a test environment?

Why do some products use a different authentication scheme?

How do I report a problem with a response?

How do I keep my integration working as the API changes?

Concepts & Terminology

What the objects and events in these responses mean.

Errors & Status Codes

Every code, body and retry rule.

Testing & Sandbox

Cloud Mock and Try it, and when to use which.

FAQ

Data and events#

Using the API#

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Data and events

Using the API

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