2. If labor s marginal product is less than its average product, 3. If labor s marginal product equals its average product, = 0 and the average product will reach its minimum value at that point, as this is the first-order condition for a minimum.arginal Product and Average Product. Consider a firm producing output with just two inputs, labor (L) and capital (K). The firm s total product (TP, or  Q  for quantity produced) is a function of its two inputs: TP = Q = f (L, K).
The average, or mean, wages for marine engineers and naval architects were $38.10 per hour or $79,240 per year in May 2009, according to the Bureau of Labor Statistics (BLS).alaries ranged from $41,070 and less for the worst-paid 10 percent of marine engineers to $121,900 and up for the occupation's top 10 percent of wage earners.
The average annual salary of sailors and marine oilers in 2010 was $38,030. The bottom 10 percent of these merchant seamen had an average annual salary of $22,320, and the bottom fourth had an average annual salary of $28,100. The middle half of sailors and marine oilers earned salaries averaging $36,260.he middle half of these merchant seamen earned an average of $64,180 per year. The top quarter had annual salaries of $91,750 per year and the average salary of the top 10 percent was $117,310 per year. The average annual salary of engineers in the merchant marine was $70,920 per year in 2010.