Depends if you put it on an 8 foot skiff or a 40 foot barge.
There are too many variables here to give you a solid answer, but my 21 foot Santana Sail Boat (weight approx: 1600lbs) goes 8-10mph.
Not very fast, possibly about 25 mph.
A 6 hp outboard will go about fast enough to plane a 10 ft. aluminum boat, with one passenger aboard.
10 15 mph depend on size of boat
depends on the boat is it a v hull or flat also the weight you are carrying you can probably gp at least 40
the 20hp Mercury outboard motor runs at the most at 8mph on a good 14ft to 16ft aluminum boat. Mercury.co
8-15
go to www.nada.com look under consumer then outboard motors find the model number and year
What mph compare to a 3.3 horse power outboard motor
Not very fast at all because of all of the weight but the 150 pounds would almost even it out.
The 15 Mercury, on a 14' boat, would easily plane out with one passenger aboard. This combination should also work out with two passengers, though it won't be a speedster.
150mph