With this information, you can calculate the quantity of feet per second 13 knots is equal to.
¿What is the inverse calculation between 1 foot per second and 13 knots?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.045575677 times 13 knots.
Which is the same to say that 13 knots is 21.941528 feet per second.
Thirteen knots equals to twenty-one feet per second. *Approximation
A foot per second is zero times thirteen knots. *Approximation