This is a cost which remains the same even when we produce one more boat. Rent is a good example. If rent is $5,000 per month and we make one more boat, our rent stays the same. The fixed cost per unit is a totally useless, meaningless, irrelevant, and misleading number. The fixed cost per unit declines every time we make one more boat, so in theory; if we make enough boats we could reduce the fixed cost per unit for rent to mathematically zero. Fixed cost per unit is no good; fixed cost in total is very good.