| Subject | English | Spanish |
| empl., transp., nautic. | assistant engineer officer | alumno de máquinas en prácticas |
| transp. | assistant engineer officer | oficial mecánico adjunto |
| hobby, cultur., transp. | assistant engineer officer | maquinista naval auxiliar |
| transp., tech., el. | certification as chief engineer officer | título de maquinista naval |
| transp. | certification as engineer officer | título de maquinista naval |
| transp., tech., el. | certification as second engineer officer | título de maquinista naval jefe |
| transp. | Chief Engineer Maintenance of Way | Ingeniero jefe de vía y obras |
| transp. | chief engineer officer | maquinista naval jefe |
| transp. | chief engineer officer | mecánico jefe |
| transp., nautic. | chief engineer officer | jefe de máquinas |
| transp. | chief engineer officer | maquinista naval de primera clase |
| gen. | city engineer's office | oficina municipal de ingeniería |
| tech. | engineer amphibian unit | unidad anfibia de ingenieros |
| transp., nautic. | engineer officer | oficial de máquinas |
| lab.law., transp. | engineer officer | oficial mecánico |
| empl., transp., nautic. | engineer officer | maquinista naval |
| transp. | engineer officer Class 4 | maquinista naval de cuarta clase |
| transp. | engineer officer Class 1 | maquinista naval jefe |
| transp. | engineer officer Class 1 | maquinista naval de primera clase |
| transp. | engineer officer Class 1 | mecánico jefe |
| lab.law., transp. | engineer officer Class 2 | segundo mecánico |
| lab.law., transp. | engineer officer Class 2 | maquinista naval de segunda clase |
| IT | engineer order wire multiplexer | multiplexor de canal de órdenes |
| IT | engineer order wire multiplexer | multiplexor de canal de servicio |
| life.sc. | engineer's level | nivel topográfico |
| life.sc. | engineer's level | nivel de agrimensor |
| transp., construct. | engineer's train | tren de trabajo |
| transp., construct. | engineer's train | tren de obras |
| gen. | engineer support | apoyo de ingenieros |
| transp., avia. | Flight Engineer's licence | licencia de ingeniero de vuelo |
| transp. | flight engineer's panel | tablero del mecánico |
| transp., avia. | flight engineer seat | asiento del mecánico |
| transp. | lay-out of the engineer's cab | disposición de la cabina de conducción |
| el. | mandatory minimum requirements for certification of chief engineer officers | requisitos mínimos aplicables a la titulación de maquinistas navales jefes |
| gen. | mandatory minimum requirements for certification of second engineer officers | requisitos mínimos aplicables a la titulación de maquinistas navales primeros |
| transp. | marine engineer, first grade | mecánico jefe |
| transp. | marine engineer, first grade | maquinista naval jefe |
| transp. | marine engineer, first grade | maquinista naval de primera clase |
| transp. | Mechanical and Electrical Engineer's Department | Material y Tracción |
| transp. | Mechanical and Electrical Engineer's Department | Servicio de Material y Tracción |
| transp. | Mechanical and Electrical Engineer's Department | M. y T. |
| transp. | Mechanical and Electrical Engineer's Department | Departamento de Material y Tracción |
| gen. | minimum practical knowledge for certification of chief engineer officers and second engineer officers | conocimientos prácticos mínimos para la titulación de maquinistas navales jefes y maquinistas navales primeros |
| gen. | minimum theoretical knowledge for certification of chief engineer officers and second engineer officers | conocimientos teóricos mínimos para la titulación de maquinistas navales jefes y maquinistas navales primeros |
| lab.law., transp. | second engineer officer | segundo mecánico |
| lab.law., transp. | second engineer officer | maquinista naval de segunda clase |
| empl., transp., nautic. | second engineer officer | oficial de máquinas de primera |
| empl., transp., nautic. | second engineer officer | primer oficial de máquinas |
| hobby, cultur., transp. | second engineer officer | maquinista naval primero |
| ed., min.prod. | ship's engineer, grade C | mecánico naval de 2 clase |
| UN, tech. | tank, engineer vehicle | tanques de zapa |