China has issued a yellow alert for sea waves to warn ships and fishing boats around the waters of the East China Sea to take precautious measures as Typhoon Ma-on is expected to affect the region from Sunday night.

The yellow alert is the second lowest level alert in the four-level sea wave alert system.

From Sunday night to Monday morning, waters around the area of 26.3 degrees north latitude and 133.6 degrees east longitude are predicted to see waves of 9 to 12 meters, said a statement from China's National Marine Environmental Forecasting Center Sunday.

The areas in the east of the East China Sea will see waves of 4 to 6 meters, the statement said.