Main Programmes Certificate in Fishing Technology National exam 35% in Math, English and Biology/Geography or 40% in General Maths General English and General Science. Advanced Certificate in Fisheries Science and Fishing Technology IGCSE grade “D” or better in Math, English and Biology. Advanced certificate in Nautical Science IGCSE grade “D” or better in Math, English, and Physics/Geography. Advanced Certificate in Marine Mechanics IGCSE grade “D” or better in English, and Grade E or better in Math and Physics.