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ClassComplianceTesting
Building the Evidence Package a Class Society Will Accept
By Engineering — Compliance · March 18, 2026 · 7 min read
Class approval is not a sales document. It is a defensible body of evidence that the system does what the spec says, with reproducible test methodology.
Class societies look at safety systems with one question: can you defend every claim with reproducible test data, signed by an engineer whose name appears on the package? Marketing language has no standing. The packaging discipline is more important than most teams realise.
What the package contains
- Functional description with traceable claims to specific test cases.
- Test methodology, including the abuse-rig setup and the calibration of the source.
- Raw and processed data, with unit and timestamp discipline.
- Algorithm documentation — pseudocode, parameter ranges, failure modes.
- Reliability evidence — MTBF data, environmental qualification, network behaviour.
What it does not contain
- Claims about competing systems, even comparative.
- Marketing material of any kind.
- Benchmarks that the auditor cannot re-run on request.
A class auditor is a careful, skeptical engineer with a deadline. The package has to make their job easy. That is the discipline.