Coach Composition | En | 0 |
| UR | 1 |
| UR | 2 |
| UR | 3 |
| UR | 4 |
| UR | 5 |
| UR | 6 |
| UR | 7 |
| UR | 8 |
76817 NGT VLKN DEMU, Nagappattinam to Vellankanni runs Daily, has classes GN. Pantry is not available. Fare does not include food cost. Total travel time of the train is 25 min. Average speed is 24 km/hr. Advance reservation period (ARP) is 120 days. The train is owned by Southern Railway (SR). Its rake is shared with . Ordinary fare is applicable. It is a DMU train. It is a Broad Gauge train.