Net profit of Dredging Corporation of India rose 19.37% to Rs 64.40 crore in the quarter ended March 2007 as against Rs 53.95 crore during the previous quarter ended March 2006. Sales rose 45.97% to Rs 201.95 crore in the quarter ended March 2007 as against Rs 138.35 crore during the previous quarter ended March 2006.