done some checking it looks like this is going to end up as a range cite with a note at the end because different sources are claiming different speeds the official total seems to vary between and knots the mathematical formula gives the speed at knots and the user requesting the cite has information stating knots i'm heading for the library tomorrow in hopes of finding some kind of info on what the usn considered the official speed to be but if i fail i think that the section will need a reword to account for this discrepancy talk