Region
Asia, Southeastern
5
South China Sea
3
Malaysia
2
Pacific area
2
Soviet Union
2
United States
2
ASEAN countries --
1
Asia
1
Barents Sea
1
Barents Sea --
1
China
1
East Asia
1
Indonesia
1
Mediterranean Region
1
North Pacific Ocean
1
Norway
1
Norway --
1
South China Sea --
1
Soviet Union --
1
Svalbard
1
Thailand
1