CHAPTER - 1. Electrical and General Safety Precautions . 2. Switches, Protective Devices, and Cables. 3. Power Distribution, IC Switchboards, and Controllers. 4. Gyrocompass Systems . 5. Sound-Powered Telephone Systems . 6. Automatic Dial Telephone Systems. 7. Amplified Voice Systems . 8. Ship's Entertainment System...... 8-1 9. Alarm, Safety, and Warning Systems . 10. Ship's Order Indicating and Metering Systems . 11. Auxiliary Electrical Equipment.