Bering Sea
Winter Seasonal Area
16 Dec - 15 Feb - Winter
16 Feb - 15 Dec - Summer
Under 100m
1 Nov - 31 Mar - Winter
1 Apr - 31 Oct - Summer
Winter Seasonal Zone
16 Oct - 15 Apr - Winter
16 Apr - 15 Oct - Summer
North Pacific Ocean
Summer Zone
Summer Zone for Ships over 100m
Winter Seasonal Area
Seasonal Tropical Area
Under 100m
1 Mar - 30 June - Tropical
1
Nov - 31 Mar - Winter
1 July - 31 Oct - Summer
1 Apr - 31 Oct - Summer
1 - 30 Nov - Tropical
1 Dec - 28/29 Feb - Summer
NA Winter Seasonal Zone I
16 Oct - 15 Apr - Winter
16 Apr - 15 Oct - Summer
Baltic Sea
1 Nov - 31 Mar - Winter
1 Apr - 31 Oct - Summer
60°N
Black Sea
1 Dec - 28/29 Feb - Winter
1 Mar - 30 Nov - Summer
Mediterranean Sea
16 Dec - 15 Mar - Winter
16 Mar - 15 Dec - Summer
North Atlantic Ocean
Winter Seasonal Zone II
1 Nov - 31 Mar - Winter
1 Apr - 31 Oct - Summer
Seasonal Tropical Area
1 Sep - 31 May - Tropical
1 June - 31 Aug - Summer
Summer Zone
Mediterranean Sea
Summer Zone
30°N
Pe
rs
ia
dS
Re
Seasonal Tropical Area
1 Apr - 31 Oct - Tropical
1 Nov - 31 Mar - Summer
30°N
ea
Seasonal Tropical Area
1 Nov - 15 Jul - Tropical
16 July - 31 Oct - Summer
n
Seasonal Tropical Area
21 Jan - 30 Apr - Tropical
1 May - 20 Jan - Summer
North Pacific Ocean
Seasonal Tropical Area
1 Dec - 30 Apr - Tropical
1 May - 30 Nov - Summer
Summer Zone
Gu
lf
Arabian
Sea
Tropical Zone
150°W
Sea of Japan
1 Dec - 28/29 Feb - Winter
1 Mar - 30 Nov - Summer
Bay of
Bengal
China
Sea
Tropical Zone
120°W
90°W
60°W
30°W
0°
30°E
60°E
90°E
120°E
150°E
Tropical Zone
Seasonal Tropical Area
1 Apr - 30 Nov - Tropical
1 Dec - 31 Mar - Summer
Seasonal Tropical Area
1 Apr - 30 Nov - Tropical
1 Dec - 31 Mar - Summer
South Atlantic Ocean
Summer Zone
South Pacific Ocean
Summer Zone 30°S
Indian Ocean
Summer Zone
Great
Barrier
Reef
Winter Seasonal Zone
16 Apr - 15 Oct - Winter
16 Oct - 15 Apr - Summer
60°S
Winter Seasonal Zone
16 Apr - 15 Oct - Winter
16 Oct - 15 Apr - Summer
Winter Seasonal Zone
16 Apr - 15 Oct - Winter
16 Oct - 15 Apr - Summer
Seasonal Tropical Area
1 Apr - 30 Nov - Tropical
1 Dec - 31 Mar - Summer