APP - Association of Ports of Portugal
http://www.portosdeportugal.pt
Association of Danish Ports
http://www.danske-havne.dk
Assoporti - Italian Sea Ports Association
http://www.assoporti.it
BPO - Baltic Ports Organisation
http://www.bpoports.com
British Ports Association
http://www.britishports.org.uk/
Finnish Port Association
http://www.finnports.com
French Ports - UPF
http://www.port.fr
Polish Ports
http://www.maritime.com.pl/en/ports
Ports of Sweden
http://www.transportgruppen.se/templates/SvHamnarNormal1Col____5091.asp
Spanish ports - Puertos del Estado
http://www.puertos.es
UKMPG - United Kingdom Major Ports Group
http://www.ukmajorports.org.uk/