 He graduated from the Britannia Royal Naval College in 1955, and was later sent to Australia for further sea training where he joined the Royal Australian Navy as an exchange officer, gaining commission as Sub-Lieutenant on 1 January 1957, and served aboard HMAS Sydney, an aircraft carrier.Briefly serving as an exchange officer, S/Lt.Tasnim was again set to England where he attended the Royal Naval College in Greenwich, where he graduated in War studies with strong emphasis on nuclear war.