A Marine Engineer contributes to advancements in nautical design, developing innovative new systems that allow vessels to reliably perform their functions. They design the internal systems used by seafaring vessels, including electrical, navigational, propulsion, steering and refrigeration systems. By successfully carrying out the duties included in a marine engineering job description, Marine Engineers ensure the construction of new vessels occurs on schedule, correctly and within budgetary constraints. The ongoing testing and inspections performed by a Marine Engineer reduce the risk of system failures and malfunctions and support the safety of the crew, cargo and passengers.