The Marey diagram as an animation. Each ship draws its own line as the day passes: rising lines are inbound, falling lines outbound, flat lines at anchor or waiting. The dashed line is high water travelling up the river.
Source: AIS positions via aisstream.io; predicted tide from Vlaamse Hydrografie tide tables 2026
Free for personal and educational use with credit to The Moving Sea. For commercial use, contact [email protected].