The tender deadline is on Friday, Feb. 15.
The corn was sought under options to buy from various countries for arrival in South Korea around June 25.
The tender continues a brisk period of Korean corn buying in international markets in the past week with large purchases also reported by importers including the Korea Feed Association (KFA), the Feed Leaders Committee (FLC) and the Major Feedmill Group (MFG).
The new tender from NOFI seeks yellow corn equivalent to U.S. number 3 grade or better in one consignment of between 45,000 to 70,000 tonnes.
Shipment is sought for between May 23 to June 11 if sourced from the U.S. Pacific Northwest coast, between May 3 to 22 if sourced from the U.S. Gulf or eastern Europe, between April 28 and May 17 if from South America or between May 8 to 27 if from South Africa.