Observed arrival · 2026-08-26
Layline, a Sailing Replay Lab
An open-source prototype that turns sparse sailing-race position updates into synchronized 2D and 3D replays.
Field notes
Layline generates repeatable fleet data rather than ingesting live races: six simulated boats run at 20 Hz, with four recorded positions per second forming the replay input. The shared clock lets scrubbing update the 3D scene, 2D chart, instruments, and standings together, while analysis tools inspect VMG, maneuvers, speed loss, and fleet position. Its engineering notes also document practical rendering decisions, including concentrating water detail near the camera and reducing scene detail after slow frames.
Observed signals
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Editorial observations of this landing page, not a rating.
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