1. (S)ECA regulated by IMO
This area and ports are regulated as (S)ECA by IMO. All vessels should use low sulfur bunker in these area and ports.
a) The Baltic Sea area
b) The North Sea area
c) The United States, Canada and the United States Caribbean Sea area


2. (S)ECA regulated by each country
This area and ports are regulated as (S)ECA by each country's national law. All vessels should use low sulfur bunker in these area and ports.
a) Iceland
b) All EU ports
Austria(AT), Belgium(BE), Bulgaria(BG), Croatia (hr), Cyprus(CY), Czech Republic(CZ), Denmark(DK), Estonia(EE), Finland(FI), France(FR), Germany(DE), Greece(GR), Hungary(HU), Ireland(IE), Italy(IT), Latvia(LV), Lithuania(LT), Luxembourg(LU), Malta(MT), The Netherlands(NL), Poland(PL), Portugal(PT), Romania(RO), Slovakia(SK), Slovenia(SI), Spain(ES), Sweden(SE), United Kingdom(GB)
c) All Turkish ports
d) Chinese main ports
Yangtze River Delta : Shanghai/Ningbo/Zhoushan/Suzhou/Nantong

Pearl River Delta : Guangzhou/Shenzhen/Zhuhai Hong Kong/Macao
Bohai Bay : Tianjin/Qinhuandao/Tangshan/Huanghua
3. (S)ECA Beta
This area and ports are regulated as (S)ECA but not effected yet.

a) Yangtze River Delta
b) Pearl River Delta, China
c) Bohai Bay, China