So outboard motors are advertised to have 30 percent less hp with a jet vs prop and inboards are 10-15 percent, correct me if I'm wrong. My question is why will a 150 hp yamaha with a prop step and haul significantly more weight than a 200hp optimax inboard jet or a 302 in a similar hull. Why does the hp produced through a jet seem to be way less than is advertised. Why will a 225 on a 7000 pound ocean boat step more weight than a boat with a 280-300 hp jet including the weight of the boat. It seems to me that either prop hp is completely different than jet hp due to efficiency and therefore you cannot compare the two side by side, or jets are advertised to be much stronger than they really are?
I have owned a few inboard jet boats and knowing their advertised hp I know for a fact that with a prop with the same advertised hp I would be able tell a huge difference.
Let me know what you think. Would a 150 prop step more weight than a 225 with a jet and if so why if the 225 has more hp (158)