The document summarizes four types of winds: 1. Trade winds - Blow near the equator towards the west. Provide suitable weather for sailing ships. 2. Westerlies - Blow from west to east between 15-50 km north and south of the equator. Important for transportation. 3. Prevailing westerlies - Blow between 50-80 km north and south of the equator. Bring weather to coastal regions. 4. Polar easterlies - Blow from 80 km to 650 km north and south of the equator. Between 80-400 km are called Roaring Forties due to strong winds. Play a role in ocean currents.