Your ORC certificate is the anchor. SailEdge™ by SailrScience computes performance deltas from that certified baseline — directional intelligence for sail decisions, not a rating system.
Learn more about the Offshore Racing Congress at orc.org
Your ORC certificate provides the polar performance grid, rated stability values, (the boat’s righting behavior — rated on the certificate, then computed by the R16 stability layer for each sailing state) and rig dimensions that define your boat. Upload it directly in the app and your boat loads with the data the certificate contains. SailrScience treats that data as the certified baseline — the starting point for every computation.
When you change a sail, we don’t re-derive the certificate. We compare two sailplans at the same wind condition, anchored to the same polar grid, and compute the delta: baseline versus edge, regime by regime, apples to apples.
Both configurations are evaluated by the same SailEdge runtime against the same certificate cell (one intersection of the wind matrix — one true wind angle, one true wind speed, one sail combination evaluated against the ORC polar), so the baseline and modeling framework remain constant. The displayed speed scales the certificate’s own cell speed by the computed performance ratio. The result is a differential comparison — not a replacement ORC polar or an independent official speed prediction.
Balance, yaw, and rudder effects are SailEdge computations beyond the official ORC calculation — never ORC ratings or official ORC speed predictions.
The ORC data never changes. It remains the fixed reference that makes the comparison meaningful.
Your ORC certificate is the starting point. Get yours at orc.org →
What certificate are you holding? What we can build depends on which certificate you hold — the twin is built from the data your document actually carries.
| Certificate | Support | What that means |
|---|---|---|
| ORC International (ORCi) | Full | The complete twin — polar anchors, rated stability, hull and rig dimensions, rated sail inventory (the sails your ORC certificate rates — the wardrobe every plan is solved from). |
| ORC Club | Conditional | Same data structure, fewer measured inputs — declared values are inherited and source-labeled. |
| One Design (with an ORC certificate) | Conditional | Builds like any other boat from its ORC certificate; class documents alone are not a certificate. |
| Multihull | Not supported | The physics stack is a monohull force balance (the solve that balances the aero and hydro forces at one wind condition — a SailEdge computation, never an ORC rating). We would rather say no than estimate. |
| Superyacht (ORCsy) | Supported | ORCsy certificates carry Lightship and Sailing conditions; your twin builds on the Sailing condition — the racing displacement, draft, and righting moment. Where a declared certificate omits a rated value, the twin tells you what it stands on. |
Certificate-measured, certificate-declared, and computed values carry different labels in your twin — you always know which one you’re reading.
We show you where a sail change makes you faster and by how much. What you do with that information is your call — and your measurer’s.
Inspect the physics behind those deltas. The Physics →
These are not aspirations. They are behavioral commitments built into how SailrScience handles your certificate data.
ORC remains the authority on measurement, rating, and certification. SailrScience is downstream — a decision tool that depends on the integrity of your certificate, not a replacement for it.
SailrScience requires an ORC certificate as its starting input. Every computation references the certified polar grid. Every delta is computed from the ORC baseline.
The more boats that carry current ORC certificates, the more boats SailrScience can serve. Our incentive structure is aligned with ORC’s mission: broader adoption of measurement-based racing standards.
SailrScience is not a competing standard. It is a downstream application that depends on the quality and availability of ORC data.
Your certificate doesn’t change every time you change a sail. But the Edge Map (the performance delta grid — every sail measured against your boat’s ORC polar at every wind speed and angle) does. Add a Code 0 to your inventory, run the comparison, and see green cells where it delivers — all without recertification. The delta is computed from the same certified baseline, so the reference stays anchored even as your sail plan evolves.
ORC is a trademark of the Offshore Racing Congress. SailrScience is an independent product and is not affiliated with, endorsed by, or a replacement for ORC or any ORC rating authority. SailrScience uses published ORC certificate data as a computational input. It is not a rating predictor.
In 2025, ORC issued over 14,000 certificates — the most in its history. Each one holds enough data to build a complete digital twin (the live performance model SailEdge builds from your ORC certificate — its certified dimensions, rig geometry and rated sail inventory): interactive, visual, testable. SailEdge is the activation layer. The certificate is the foundation — we build the instrument on top of it.