Beaufortova skala

		Hitrost			Valovi
		km/h	m/s	kt	m
0 Bf	tišina	< 1	0-0.2	< 1	-
1 Bf	lahor	1-5	0.3-1.5	1-3	0.1(0.1)
2 Bf	povjetarac	6-11	1.6-3.3	4-6	0.2(0.3)
3 Bf	slabi	12-19	3.4-5.4	7-10	0.6(1)
4 Bf	umjereni	20-28	5.5-7.9	11-16	1(1.5)
5 Bf	umjereno jaki	29-38	8.0-10.7	17-21	2(2.5)
6 Bf	jaki	39-49	10.8-13.8	22-27	3(4)
7 Bf	žestoki	50-61	13.9-17.1	28-33	4(5.5)
8 Bf	olujni	62-74	17.2-20.7	34-40	5.5(7.5)
9 Bf	jaki olujni	75-88	20.8-24.4	41-47	7(10)
10 Bf	orkanski	89-102	24.5-28.4	48-55	9(12.5)
11 Bf	jaki orkanski	103-117	28.5-32.6	56-63	11.5(16)
12 Bf	orkan	>=108	>=32.7	>=64	14(-)

Stanje morja glede na
Douglasovo skal

Morje	Opis	Valovi (m)
0	zrcalno	0
1	naborano	0-0.1
2	valićasto	0.1-0.5
3	valovito	0.5-1.25
4	uzburkano	1.25-2.5
5	grubo	2.5-4
6	olujno	4-6
7	velo	6-9
8	teško	9-14
9	iznimno teško	>14