Validate the live boat physics built on the R16 DSYHS calm-water backbone with bounded follow-on lanes. Save the profile. Sail lofts overlay their calibration on your foundation.
Explore Your EdgePhoto: Don Ramey Logan / CC BY-SA 3.0
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SailEdge runs a full force-balance computation at every point in the wind matrix — the same discipline used by ORC and naval architecture firms. Your role is to validate the boat side of that equation — now live on the R16 physics release — and save it as a calibration that every sailmaker builds on.
ORC certificate in, working boat model out. Displacement, stability, rig dimensions — verified against your design data.
Every parameter shows its source. ORC, Derived, Estimated — color-coded and traceable. Confirm it matches your numbers.
Open point review or any Edge Map cell. Drive, side force, heel moment, CE position, whole-boat outcome, and hydro-lane disclosure are all visible for any condition.
One cell isn’t enough. Check upwind, reaching, downwind. When it converges across the range, the calibration is confirmed.
Load the boat from its ORC certificate. Certified dimensions, stability data, polar performance — everything the certificate provides. Review the measurements, confirm they match your design data, and identify where the model needs refinement. The righting moment curve is anchored to the certificate’s rated stability values and drives heel equilibrium at every point of sail — its source and construction are disclosed, never silently substituted.
Open any Edge Map cell and inspect the force breakdown. Drive force, side force, heel moment, Center of Effort position — the full picture of how the model resolves that condition. Compare against your design data. Where the model diverges from known behavior, you know where to tune.
The hull response layer now runs through the live R16 runtime backbone (DSYHS reference hulls): upright hull, appendage, heel influence, sideforce/leeway, rudder interaction, and approved wave resistance where the boat data supports it. Heel equilibrium is still solved iteratively — the model finds the angle where heeling force from the sails matches the boat’s righting moment, then reports exactly how much drive was sacrificed if the rig depowered. These are the diagnostics you check against your design data.
Per-cell RM supplement and crew mode across the full polar — validation-grade resolution for stability review. See how crew weight changes the edge →
Boat Tuning now includes a Delft-style RM stability profile capturing how the righting moment behaves as heel builds — form stability vs ballast stability. It seeds automatically when you select a Delft hull family, then you adjust for your specific hull. Every control explains what it does, what happens when you move it, and when to adjust it. Learn more →
The Hull Efficiency Index normalizes hull resistance across platforms — a single metric that lets you compare drag characteristics across designs regardless of displacement class.
Crew weight operates as a bounded what-if within the Edge Map. More weight means more righting moment upwind but more displacement to drag downwind, so the sensitivity is course-dependent. The certificate stays anchored. The what-if shows you where it matters and where it doesn’t.
Open Boat Tuning and review the bounded R16 runtime families first: upright hull, heel influence, appendage, sideforce/leeway, and rudder interaction. Adjust those before reaching for transitional residual overlays, and shape the hull physics until the Edge Map converges with your design data across conditions.
Every adjustment recomputes immediately. The ORC baseline stays anchored.
One cell isn’t enough. Check the force balance across the polar — upwind, reaching, downwind, light air, heavy air. When the model converges with your data across the full range, the calibration is confirmed.
When a cell hits a physical constraint — hull speed cap, depower ceiling, or rudder margin — the model flags it. Amber shading marks the cell and the detail card identifies which constraint was active. That distinction matters: a divergence caused by a model guardrail is different from a divergence caused by a calibration gap. One tells you the model is protecting the result. The other tells you where to tune.
Hull shape selection, RM stability profiling, cross-section editing, and R16 hydro authority — the full calibration workspace for building your platform foundation.
Open Boat Tuning →Every cell in the Edge Map contains 107 computed attributes. At the professional tier, you see roughly 65 of them — per-sail force attribution, CE geometry, effective areas, confidence scoring, and clamp diagnostics. Engineering-grade access under NDA surfaces the full set. The depth scales with the conversation — but every tier solves the same physics. Tiers gate explainability, never physics.
Competitor and cohort work has always stopped at the boats whose designers you cannot call. R16 derives righting moment (RM) and heel behavior from the certificate each boat already carries, publishes the confidence grade alongside every value, and refuses outright where the evidence runs short. The grade and the refusal are the defensibility: you always know which numbers will hold up.
Comparative work gains a dimension certificates alone leave implicit: sailing state. Each boat in a study now reports whether its reference equilibrium is natural, reached after modeled depower, reached after a modeled sail change from the rated inventory, or honestly out of the modeled envelope — computed from its own certificate on the principles ORC publishes. The rule is the same as everywhere in R16: the result is graded for confidence, or refused with a reason you can cite.
A validated calibration is only useful if it’s reproducible. Load the same ORC certificate, apply the same boat tuning profile, specify the same conditions — the Edge Map produces the same output. No drift. No randomness. No “it depends on the run.”
That’s what makes the calibration auditable. You can hand it to a partner loft, a class measurer, or a client — and they can verify the result independently.
Save your work as a Boat JSON artifact or NA tuning profile — your IP, portable and independent. Send it to your loft partners. They overlay their sail calibration on your validated hull physics. The result: every Edge Map for that platform is built on a foundation you approved.
Your calibration plus their calibration. Neither works as well alone.
The peer proof is already in the water: Farr Design has adopted SailrScience physics across their consulting workflow.
Approve a class calibration and every owner in the fleet benefits. Lofts building on your platform know the hull physics are validated. Owners shopping for sails see Edge Maps built on builder-approved data.
Your work multiplies across the ecosystem. One calibration, every boat in the class, every sailmaker who serves them.
You’ve validated the hull. FleetEdge™ by SailrScience shows you the fleet: 11,207 boats analyzed within a 12,965-boat governed corpus, filterable by designer, hull efficiency, or archetype. See how boats with similar geometry group together — and where the outliers sit.
The eight archetypes (the 2026 census) each answer three questions: how the boat creates speed, where that speed pays, and what it demands of the crew. The same DSYHS physics that builds your Edge Map is what the archetypes are computed from. When a boat’s archetype doesn’t match its hull family, that’s a question worth investigating. All analytics are anchored to patent-pending force-balance physics.
Builder-validated physics for every boat in the class. Tell us about your design.
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