> A modern harbor tugboat can go perhaps 15 knots. In 4 minutes this means it would travel 4 nautical miles, at the very best (running start in correct direction).
It's probably pedantic, but I don't understand your math. Knots are nautical miles per hour. To travel 4nm in 4 minutes would imply a speed of 60 knots. At 15 knots, you would travel 1 nautical mile in 4 minutes. (15kn/60min * 4min = 1)
It's probably pedantic, but I don't understand your math. Knots are nautical miles per hour. To travel 4nm in 4 minutes would imply a speed of 60 knots. At 15 knots, you would travel 1 nautical mile in 4 minutes. (15kn/60min * 4min = 1)
Or it's possible I haven't had enough coffee.