Replay: rewinding a vessel's recent track

"Replay" plays back the recent path of the selected vessel through its AIS fixes — the map's time machine. You see how the ship moved and manoeuvred, not just where it is now.

Replay always belongs to a vessel: pick the ship first, then rewind its path. The map does not show the whole picture at a past moment.

How to use replay

Sign in — replay is unavailable without an account; the map offers to register instead. Signing up is free.
Open the Maritime Map and select a vessel: click it on the map, or find it by IMO, MMSI or name in the search field.
The dock at the bottom of the map now carries the vessel's name. Press ▶ to play the path from the oldest fix to the freshest; ◀ and ▶ on either side step one fix at a time.

How the replay dock works

The slider snaps to real AIS fixes, not to round minutes: every thumb position is an actual position of the ship. Fix times sit under the slider, a counter such as "7 / 24" to the right.
Left of the slider — step back, play, step forward. While playing, the button turns into pause.
Above the slider — the time of the selected fix: "3.2 h ago", the UTC date and time, and the speed in knots at that moment.
The ship icon next to the counter reveals vessels that were nearby at the same moment; by default only the selected vessel stays on the map.
✕ returns the map to Live — real time and live positions.
On the left of the dock — the vessel's name and the "Track" and "Route" toggles.
With the weather layer on, the dock switches between "Weather" (forecast ahead) and "Replay" (movement back): one scale for both directions of time.
On a phone replay lives in the vessel card: tap "Replay" next to "Track" and "Route".

How far back you can rewind

The rewind window depends on your plan:

Plan	Replay window
Without an account	not available
FREE	24 hours
PRO	72 hours
ENTERPRISE	7 days

Why it helps

See where a vessel came from and how it manoeuvred on approach to a port.
Check whether the ship waited at anchor, and for how long.
Compare the actual path against the declared voyage.

For a vessel's full history, use its page with voyages and port calls — its window goes deeper than replay.