70 mph = 60.8 knots.
Knots is a nautical term for measuring how fast something is going. 1 knot is equal to 1.15 mph, 13 knots is 14.95 mph.
Roughly 21 knots which is about 25 mph.
22 knots = 25.3171479 mph
105 knots is 120.832 mph
35 knots is 40.2773 mph
441 knots = 507.5 mph
382 knots = 439.6 mph
17 knots = 19.56 mph
8 knots is about 9.2 mph.
100 knots is 115.078 mph
308 knots equates to 354.44 mph
50 knots = 57.5 mph