0
4600
4400
4200
4000
3800
3600
3400
3200
2 3000
5 2600
2400
2200
2000
1800
1600
1400
1200
1000
800
600
400
200
E
ô 2800
4800
4600
4400
- 4200
4000
3800
3600
3400
3200
3000
2800
2600
2400
2200
2000
1800
1600
1400
1200
1000
800
600
400
200
22
20
18
16
4
14
12
6
10
8
Wave period To, at end of decay ( seconds )
Figure 3-20. Travel Time of Swell Based on t0 = D/Cg
Oecay
distance
0,
(Statut» miles)
3-45