Kolkata Port Trust (KoPT) has announced a 28.58 per cent rise in operational surplus at Rs.603.65 crore for 2015-16. It had reported operation surplus of Rs.469.49 crore in the corresponding year. ¨We handled 50.19 mn tn during FY16 from Kolkata and Haldia docks, a jump of 8.43 per cent over last year. The operating surplus jumped by 28 per cent to Rs.603.65 crore during the year,¨ KoPT Chairman M T Krishna Babu said. However, KoPT posted a loss of Rs.148 crore.