Chapter 3: Advanced Operation 27SeaTalk FailureThis silent alarm indicates that there is a wiring fault in the SeaTalkconnection.No LinkThis silent alarm indicates that there is no link between the ST600Rand the course computer.Auto ReleaseThe Auto Release alarm is activated when an Raymarine stern driveactuator is returned to manual steering.Off CourseThis alarm is activated when the vessel has been off course from thelocked heading by more than the specified angle for more than 20seconds (see Section 2.3, “Using Auto Mode”).The alarm is cleared if the heading recovers or the course ischanged, or if the operating mode is changed.Wind ShiftThis alarm is activated when the apparent wind angle requires anadjustment of the locked heading by more than 15° (see Section 3.2,“Operation in Vane Mode”).Large Cross Track ErrorThis alarm is activated when the cross track error exceeds 0.3nm(see Section 3.1, “Operation in Track Mode”).The autopilot stops controlling the locked heading as soon as thiscondition occurs.The alarm is cleared if the heading recovers or the course ischanged, or if the operating mode is changed.