Use with OS maps when working in kilometers
	km/hr	3	4	5	6	7
m	0.1	2.0	1.5	1.2	1.0	0.9
K	0.2	4.0	3.0	2.4	2.0	1.7
	0.3	6.0	4.5	3.6	3.0	2.6
E	0.4	8.0	6.0	4.8	4.0	3.4
C	0.5	3.8	7.5	6.0	5.0	4.3
N	0.6	12.0	9.0	7.2	6.0	5.1
A	0.7	14.0	10.5	8.4	7.0	6.0
T	0.8	16.0	12.0	9.6	8.0	6.9
S	0.9	18.0	13.5	10.8	9.0	7.7
I	1	20.0	15.0	12.0	10.0	8.6
D	2	40.0	30.0	24.0	20.0	17.1
	3	60.0	45.0	36.0	30.0	25.7
	4	80.0	60.0	48.0	40.0	34.3
	5	100.0	75.0	60.0	50.0	42.9
Use with charts when working in nautical miles
	nm/hr	2	2.5	3	3.5	4
m	0.1	3.0	2.4	2.0	1.7	1.5
N	0.2	6.0	4.8	4.0	3.4	3.0
	0.3	9.0	7.2	6.0	5.1	4.5
E	0.4	12.0	9.6	8.0	6.9	6.0
C	0.5	2.5	12.0	10.0	8.6	7.5
N	0.6	18.0	14.4	12.0	10.3	9.0
A	0.7	21.0	16.8	14.0	12.0	10.5
T	0.8	24.0	19.2	16.0	13.7	12.0
S	0.9	27.0	21.6	18.0	15.4	13.5
I	1	30.0	24.0	20.0	17.1	15.0
D	2	60.0	48.0	40.0	34.3	30.0
	3	90.0	72.0	60.0	51.4	45.0
	4	120.0	96.0	80.0	68.6	60.0
	5	150.0	120.0	100.0	85.7	75.0