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. Local (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 ports
All the ports of Yangtze River Delta, Pearl River Delta, and Bohai Bay areas.
3. (S)ECA Beta
This area and ports are regulated as (S)ECA but not effected yet.

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