If you want the answer in miles per hour, 20 knots is 23.015589 miles per hour
200 knots is equivalent to 230 mph.
Blood
28.5 Knots is 32.8 miles per hour.
340 knots = 391.265 mph
30 kph = 16.2 knots.
8.0555 miles per hour
About 25.3 miles per hour. A good estimate is to multiply your total knots by 1.15 (representing miles) your product is an estimated answer.
34.75 knots
About 9.6 knots.
Fast
32 knots =34.4
Some fast ferries around the world do over 30 knots.
35 knots is 40.2773 mph
441 knots = 507.5 mph
55 knots is 101.86km/h
382 knots = 439.6 mph
119 knots equates to 136.943 mph
205 knots = 235.91 mph
105 knots is 120.832 mph