https://oceandataconsulting.fr/en/blog Ocean modelling, weather routing and data validation: measured results and methods. en Sat, 10 Oct 2026 08:00:00 GMT https://oceandataconsulting.fr/en/blog/ensemble-forecast-arrival-time-weather-routing https://oceandataconsulting.fr/en/blog/ensemble-forecast-arrival-time-weather-routing Mon, 28 Sep 2026 08:00:00 GMT Brest to Ponta Delgada, ERA5 truth: the ECMWF ensemble cuts arrival-time error by 47 % at five lead times, but did not beat a direct route. https://oceandataconsulting.fr/en/blog/harmonic-baseline-fit-window-depth https://oceandataconsulting.fr/en/blog/harmonic-baseline-fit-window-depth Tue, 01 Sep 2026 08:00:00 GMT A 365-day fit window lands exactly on the Rayleigh threshold of the annual Sa constituent. Measured causally at Brest and Saint-Malo, moving to 730 days changes the verdict. https://oceandataconsulting.fr/en/blog/retro-routing-inconclusive-fleet-gain https://oceandataconsulting.fr/en/blog/retro-routing-inconclusive-fleet-gain Tue, 01 Sep 2026 08:00:00 GMT Twelve months of AIS replay on a Norwegian corridor: +0.98 % median gain against 6.17 % residual error. The verdict is inconclusive, and that is what we publish. https://oceandataconsulting.fr/en/blog/netcdf-zarr-chunking-ocean-data https://oceandataconsulting.fr/en/blog/netcdf-zarr-chunking-ocean-data Tue, 01 Sep 2026 08:00:00 GMT The same ERA5 dataset rechunked three ways produces three opposite performance profiles depending on the access pattern — map, time series, or route corridor. https://oceandataconsulting.fr/en/blog/sargassum-landfall-alert-j3-guadeloupe https://oceandataconsulting.fr/en/blog/sargassum-landfall-alert-j3-guadeloupe Tue, 01 Sep 2026 08:00:00 GMT How a sargassum-alert MVP detects patches by satellite, advects them three days ahead through surface currents, and classifies confidence without ever averaging away uncertainty. https://oceandataconsulting.fr/en/blog/dnv-operability-english-channel-cable-lay https://oceandataconsulting.fr/en/blog/dnv-operability-english-channel-cable-lay Tue, 04 Aug 2026 08:00:00 GMT Operability, OPLIM and alpha factor on an Ushant — Casquets — Dover Strait cable corridor: threshold sensitivity, season-by-season limiting response mode, and wave-field reliability. https://oceandataconsulting.fr/en/blog/validating-eta-routing-ais-replay https://oceandataconsulting.fr/en/blog/validating-eta-routing-ais-replay Fri, 24 Jul 2026 08:00:00 GMT Replaying 800 real cargo voyages (North Sea AIS) through SeaRoute-Py with ERA5 and CMEMS: a 2x2 ablation measures what actually improves ETA. https://oceandataconsulting.fr/en/blog/multi-mission-altimetry-audit-era5-mfwam-candhis https://oceandataconsulting.fr/en/blog/multi-mission-altimetry-audit-era5-mfwam-candhis Fri, 24 Jul 2026 08:00:00 GMT A four-phase audit of ERA5 and MFWAM reliability across three corridors, against satellite altimetry and Cerema’s CANDHIS buoys. https://oceandataconsulting.fr/en/blog/recalibrating-kwon-formula-ais-polar https://oceandataconsulting.fr/en/blog/recalibrating-kwon-formula-ais-polar Fri, 24 Jul 2026 08:00:00 GMT A 1980 formula checked against AIS-derived North Sea speed polars: what holds, what diverges, and the resulting three-tier fallback. https://oceandataconsulting.fr/en/blog/transatlantic-weather-routing-case-study https://oceandataconsulting.fr/en/blog/transatlantic-weather-routing-case-study Fri, 24 Jul 2026 08:00:00 GMT A* weather routing Rotterdam–New York over 28 winter 2024 departures, benchmarked against the great circle and the GMTDS modal traffic corridor: time and fuel gains, with limits included. https://oceandataconsulting.fr/en/blog/validating-seabed-mobility-atlas-shom-data https://oceandataconsulting.fr/en/blog/validating-seabed-mobility-atlas-shom-data Tue, 14 Jul 2026 08:00:00 GMT No sensor measures seabed mobility. How we validate a sediment mobility atlas anyway, through three independent confrontations — SHOM tidal currents (51 points), 908 dune crests, RESOURCECODE grain size — negative results included. https://oceandataconsulting.fr/en/blog/submarine-cable-mobility-scour-corridor-atlas https://oceandataconsulting.fr/en/blog/submarine-cable-mobility-scour-corridor-atlas Mon, 06 Jul 2026 08:00:00 GMT How to quantify the seabed risk of a submarine cable route — sediment mobility and scour (Soulsby, GLORYS12, RESOURCECODE, EMODnet) — then derive the least-cost corridor with A*. https://oceandataconsulting.fr/en/blog/coastal-forecasting-ai-ww3-croco-cmems https://oceandataconsulting.fr/en/blog/coastal-forecasting-ai-ww3-croco-cmems Fri, 12 Jun 2026 08:00:00 GMT How to fuse sea states (WW3), coastal circulation (CROCO) and reanalyses (CMEMS) with neural networks for high-resolution coastal forecasts. https://oceandataconsulting.fr/en/blog/ww3-croco-cmems-which-ocean-data https://oceandataconsulting.fr/en/blog/ww3-croco-cmems-which-ocean-data Wed, 10 Jun 2026 08:00:00 GMT A practical guide to choosing the right ocean data source for your need: resolution, variables, extent and cost of WaveWatch III, CROCO and Copernicus Marine.