Doesn't work like that. 15 hp is the power of the motor, but the speed you get from 15 hp would depend on how hard it is to push the boat through the water.
15 hp on a canoe would be scary fast while 15 hp on a barge won't do a thing.
17 knots=19.56 mph
10 knots = 11.51 mph
295 knots = 339.5 mph
You can't convert knots to km - knots is a unit of speed, whereas km is a unit of distance.A knot is exactly 1.852 km/h; so to convert knots to km/hour (NOT to km), you need to multiply by that number.
620.270122 mph ==
About 15HP
it will probably be around 15HP
About 34.76 knots.
About 661.3 knots.
32.4 knots
That equals 8.68976993 knots.
64 knots = 73.6mph
Yes, many a times the softwood has knots
1 knots = 1.15077945 miles 23 knots = 26.46792735 miles
17 knots=19.56 mph
i knot in mph is 0.868976242 knots so 503 mph is 437,095049726 knots
16.6 knots is about 19.1 mph