AVERAGE PRODUCT AND MARGINAL PRODUCT: 1  If the marginal is less than the average, then the average declines. 2  If the marginal is greater than the average, then the average rises. 3  If the marginal is equal to the average, then the average does not change. If the productivity of the marginal worker is equal to the average productivity of the existing workers, then the average does not change. 2  Marginal Less Than Average: Once the marginal product curve moves below the average product curve, then the average product curve declines.
Marine Engineer or Naval Architect Salary. (United States). Median pay for Marine Engineer or Naval Architects in the United States is around $84K annually. In the world of Marine Engineer or Naval Architects, total cash compensation can vary between $55K and $147K.arine Engineer or Naval Architect Salary. (United States). Median pay for Marine Engineer or Naval Architects in the United States is around $84K annually. In the world of Marine Engineer or Naval Architects, total cash compensation can vary between $55K and $147K.
Marine Engineers Salary. Marine Engineers average salary is $80,536, median salary is $73,200 with a salary range from $50,000 to $140,000.Marine Engineers salaries are collected from government agencies and companies. Each salary is associated with a real job position.Marine Engineers salary statistics is not exclusive and is for reference only. They are presented as is and updated regularly.arine Engineers salaries are collected from government agencies and companies. Each salary is associated with a real job position. Marine Engineers salary statistics is not exclusive and is for reference only. They are presented as is and updated regularly.