US-based C-Nav Solutions launch its latest GNSS Real-time tide measurement package, C-Tides. The company says that its C-Tides suite combines the exceptional vertical accuracy of C-Nav's GNSS Precise Point Positioning service with the latest advanced ocean and coastal tides models. C-Tides Online features real-time filters and vessel dynamics, choice of world-wide Mean Sea Surface or regional reference frame models, and tidal prediction for mission planning. C-Tides Offline utilities include data smoothing and outlier rejection, harmonic analysis, Doodson X0 filter and a LAT option. C-Tides is a fully supported C-Nav utility. The results are suitable for combining with other suitably calibrated vertical components to achieve IHO SP44 Order 1 or better.