Yaw Gyro pour pilote auto Autohelm Raymarine English.pdf

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“Yaw Gyro” for autopilot Raymarine™ SmartPilot S1/S2/S3 Type 150/400 &
Autohelm Type 100/300
- User Manuel - v2.0
The “Yaw Gyro” uses a gyrometer sensor wich is an electronic gyroscope-type
sensor designed for aeronautical applications.
The “Yaw Gyro” is intended for RayMarine™ SmartPilot S1 / S2 / S3 autopilots not
equipped with the "G" option as well as the Autohelm Type 100 and Type 300.

1 - Steering : General Principles
Steering a ship is following a route or a heading towards a given destination :
a- visually : the helmsman is keeping a constant visual alignment according to a mark
on a coast,
b- to a constant magnetic heading, the helmsman keeps the orientation of the ship
according to the reading of a magnetic compass information,
c- geodesic, the helmsman is keeping a route to a fixed land point according to the
data he receives from a GPS, the track. It is called the “homing”.
d- in the wind, the helmsman maintains the ship's orientation at a constant angle of
the wind.
An autopilot idevice can be used according to the three modes b, c and d above.