Kolkata, May 12 (UNI) Bisaja Chakraborty (Junior Girls) from Delhi Public School, Yona Sengupta (Senior Girls) of Narayana School Sonarpur, Sanskar Chakraborty ( Junior Boys ) representing South Point High School and Md Arman of National High School won the golds finishing at the top of their respective group in the Indoor Rowing event at the 50th All India Invitation Schools Rowing Championship being organised by Lake Club here Monday.