Marine engineers design, develop, install, and maintain ship machinery and power systems. They conduct studies to design marine engines, equipment, and structures. They also prepare plans, estimates, schedules, and specifications. Marine engineers need a bachelor's degree and several years of work experience. They earn an average salary of $50,180 to $74,320 per year. However, the outlook for job growth in this field is limited with only 10 openings predicted each year.