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.
Ensigns. Fully trained Navy engineers typically begin with the rank of ensign, which has a pay grade of O-1. For 2013, the salary for an O-1 was $34,516.80 per year if they had been in service for two years or less.An ensignâs salary did not exceed $43,430.40 except under rare, special circumstances.aptains and Rear Admirals. Captains (O-6) and rear admirals (O-7 and O-8) are the top ranks that may be attained with fewer than 20 years in the service. The 2013 salary range for captains is between $72,777.60 and $128,840.40, while an O-7 rear admiral earns between $98,190 and $146,703.60.