Relationships:
Calais – Dover – Calais
Dunkirk – Dover – Dunkirk
Rostock – Gedser – Rostock
Świnoujście – Trelleborg – Świnoujście
Travemunde – Trelleborg – Travemunde
Świnoujście – Ronne – Świnoujście
Świnoujście – Copenhagen (ferry to Trelleborg & SE-DK bridge)
Helsingor – Helsingborg – Helsingor
Puttgarden – Helsingborg – Puttgarden
Rodby – Puttgarden – Rodby
+ crossing the Oresund Bridge connecting Denmark and Sweden
+ crossing the Calais – Dover – Calais Eurotunnel linking France and the UK
+ ferries on IT and FI and many others
