|They took turns being the ocean, so that the log line would stay in place, and the navigator, who unwound the string and counted the knots. Sam was the timer. We only used 10 seconds rather than 30 because our rope was in a smaller scale.|
|They averaged about 4 knots.|
They had fun playing with the log line some time after the lesson was over.
Older students (Ages 10-up) might like to read the Longitude Prize, tale of the scientific contest for the Longitude Prize, which was offered through a 1714 act of the British Parliament in response to the devastating loss to the British navy of four battleships and hundreds of sailors.