speed calc5 knots 310 knots 415 knots 520 knots 625 knots 630 knots 735 knots 740 knots 845 knots 850 knots 9
speed calc fixed5 knots 3 310 knots 4 315 knots 5 420 knots 6 425 knots 6 530 knots 7 635 knots 7 740 knots 8 845 knots 8 950 knots 9 10