Canal & River Trust

Gravellock

Swing the gates only when the chamber is on the green mark, so each narrowboat clears the sill. Watch the ghost tick: it shows where the water will be when the boat arrives. Hold the sluice (H) to freeze the level for a moment, and brace for tidal surges. Perfect passes build a streak.

Space / GATE swing gates · H / HOLD sluice hold · M mute · P pause