Maritime radar intelligence,
without enterprise lock-in.

The European Space Agency's Sentinel-1 constellation images the entire Earth's surface every six days, in all weather, day and night. It sees through clouds. It sees through darkness. Every scan is published as open data — free to download, free to use.

The problem is the complexity. Processing raw SAR backscatter into meaningful detections requires terrain correction, speckle filtering, land masking, and algorithm expertise. Most organisations simply don't have it. SAR API removes that barrier for maritime screening and triage. When the job requires exact-time evidence rather than archive screening, we route it into a separate commercial-SAR Intelligence workflow.

Every six days, our pipeline runs automatically:

We're built on top of the Copernicus programme — a publicly funded, open-access Earth observation system operated by ESA and the European Commission. The underlying satellite data is free. What we sell is the processing, the infrastructure, and the developer experience around that open-data maritime screening layer, plus a separate paid Intelligence path for fresh commercial acquisitions.

Vessel screening — Vessels appear as bright point targets in SAR. We use CFAR (Constant False Alarm Rate) detection plus masking and follow-up logic to produce screening-ready vessel candidates. For exact-time dark-vessel investigations, we use the separate Intelligence tier with fresh commercial SAR and AIS correlation.

AIS support and context — Maritime scenes carry support-level metadata so users can see whether the answer is backed by exact Tidewatch history, partial coverage, or a gap-zone workflow that may need escalation.

Other layers — Flood, sea ice, burn scar, deforestation, construction, and oil spill remain in the system, but they are not the main commercial promise until their data density and validation are stronger.