210 knots = 388.92 km/h
32.4 knots
21 knots is 24.17 mph
21 knots=24.1663684 miles per hour
1 knot = 1.15 mph 1 knot = 1.852 kmh kmh - 18.52 mph - 11.51
308 km/h is equal to: - 85.555556 m/s - 191.38233 miles/h - 166.3067 knots
it's 1.85 km/h for 1 knots (nautical)
336 kmh = 208.8 mph
1001 kmh = 622 mph
50 kmh = 31.06856 mph
The captain of Titanic had her going at 21 knots.
Roughly 21 knots which is about 25 mph.