This study introduces the SVETT (Simulador Virtual de Estudo Topotático do Terreno), a simulator designed to assist, on the terrain study, the Officers-Students of the Advanced Training Course for Marine Corps Officers (ATCMCO), aboard the Centro de Instrução Almirante Sylvio de Camargo (CIASC), Unit where the Marines of the Brazilian Navy are trained, specialized or improved, which in the future will be responsible for planning and conducting Military Operations. TTSS allows one to recreate a region of any part of the globe where it is possible to position the student in that area and, with the visual aids available to the instructor, make it easier to convey the instructor s knowledge, enabling students to view details that usuall were only imagined at the real terrain. This feature acts as an intermediary resource between theory and practice, enhancing student s knowledge prior to their terrain exercise. We evaluated the simulator with 12 users, 7 students and 5 instructors, where we obtained positive results with regard to the teachinglearning process. The results also suggest improvements so that the simulator is suitable for all types of users regardless of its characteristics, in addition to a proposal for future studies.