9 ELECTRONIC INSTRUMENTS FOR MARINE PLEASURE CRAFT, NAMELY SENSORS FOR MEASURING SPEED, DEPTH, BEARING, WIND ANGLE, WIND SPEED, TEMPERATURE, BATTERY VOLTS AND HEEL ANGLE; DIGITAL PROCESSORS FOR PROCESSING SIGNALS FROM THE SENSORS AND DISPLAYS FOR DISPLAYING PROCESSED INFORMATION FROM THE PROCESSORS; ALARMS, CABLES, AND INTERFACES FOR USE WITH THE AFORESAID GOODS