Measurement
What others estimate, a Tadorne instrument measures: wind at the masthead, the boat's energy, its motion. Every stated figure points to a test.
Tadorne
Marine instruments, designed in the atelier.
Tadorne designs marine instruments, to be made in small series. Each piece will be calibrated, numbered and delivered with its signed certificate.
The first, in development, will measure wind at the masthead, with no moving parts. The second, published as a reference design, keeps watch from the bilge over the boat’s energy, all year round.
What makes a Tadorne instrument
Endurance
Designed like rugged military equipment: salt, UV, cold, vibration, lightning. An instrument is made to stay in place for years, not to come down at every port.
Craft
Named materials, careful assembly, an engraved mark: each instrument will be fitted to the yacht that receives it.
Depth
Picosecond timing, in-house silicon, signed firmware: what cannot be seen is what makes the measurement.
Instruments
In development
Penon
Masthead wind instrument: ultrasound, no moving parts, measurement corrected for the boat's motion.
- Moving parts
- 0
- Principle
- Ultrasound
- End goal
- Free silicon
In development
Ardoise
Mast-foot display for racing: the numbers that matter, large, facing the cockpit, on a single NMEA 2000 drop.
- Cable
- One
- Target reading distance
- 3 to 6 m
- Sources
- NMEA 2000 · Signal K
Reference design
Vigie
Energy node for the bilge: it reads the battery at the shunt and keeps watch on a few microamps, all year, main switch off. Published to be rebuilt.
- Watch current
- 22 µA
- Measured current
- 100 A
- Regime
- All year
What the maison promises
Measured, not claimed
Specifications, tests and limits are published as they are. "±0.1 m/s" points to a test; "high accuracy" points to nothing.
Built to last, and to be repaired
Documented interfaces and protocols, sources published where they guarantee repair and integration: a Tadorne instrument never locks a yacht in.
Authenticated by signature
Documents and firmware are signed with a GPG key anchored in the tadorne.org DNS; instrument certificates will be too. Anyone will be able to authenticate an instrument, at every change of owner.