I have a 14/36 flat boat with a 15 and it goes 26mph with only me and minimal gear.
the 20hp Mercury outboard motor runs at the most at 8mph on a good 14ft to 16ft aluminum boat. Mercury.co
What mph compare to a 3.3 horse power outboard motor
60kph
8-15
Yes, but not very fast.
they were really fast and had lots of electricity
It depends on the size craft it is pushing. A 5hp outboard should run fast enough to plane out say a 10 to 12ft. aluminum boat with one man aboard.
a 75 hp merc goes 19 mph
My best guess would be about 5-8 mph
You will notice on the throttle handle that there are three positions on the legend. "Really Slow", "Start" and "Slow".
A 3.5hp outboard will give you 8mph tops, which would be a normal walk to a slow jog.
on my avon air floor inflatable in okinawa with 2 and fishing gear about 4 to 6 mph. avon 310