Region
United States
20
United States --
7
Asia, Southeastern
2
Southeast Asia
2
Africa, Northeast
1
Asia, Southern
1
Canada
1
Caucasus, Northern
1
Central America
1
Fiji
1
Great Britain
1
Iran
1
Iran --
1
Malacca, Strait of --
1
Malacca, Strait of -- Navigation -- Safety measures
1
Russia(Federation) --
1
Singapore
1
United State
1
United nation --
1