Chapter 3: Commissioning Procedures 413.4 Open water calibrationEnsure that the Initial setup and Dockside setup have been satisfactorily completed,then navigate to a familiar area of open water, and carry out the separate Open watercalibration procedures for the autopilot and instrument systems, as necessary.Sailing vessels should perform open water calibration under engine power.Note: You may exit the calibration process at any time by pressing CANCEL on your ST70+keypad. The next time you power up, you will be prompted to complete calibration.AutopilotsFigure 3-2: Summary of autopilot open water calibrationWARNING: Ensure you have sufficient open space for calibrationThe open water calibration manoeuvres require a clear, familiar area ofwater, with enough depth for your vessel. Ensure you are not likely tocollide with any vessel or other obstruction during calibration.WARNING: Unexpected turnsThe autopilot may make unexpected turns during open water calibra-tion. Maintain a speed that will enable safe turns.Sea Trial Warning pageSea Trial start pageAutolearn(welcome)Autolearn(warning)Autolearn(learning)OKAlign to GPSOKCompass alignmentYES NOCompass calibration(Swinging the compass)Autolearn resultPASS FAILEnd calibrationAutopilot in Standby modeRepeat AutolearnPilot Controller Main MenuSelect Autopilot calibrationAutopilot calibration MenuSelect CommissioningCommissioning MenuSelect Sea Trial WizardOKOKOKOKOKOKOKOKGPS aboard?OK OK