The main Welsh ports used by passengers are Holyhead (77.5% of passengers), Milford Haven (11.3%) and Fishguard (11.2%).
Y prif borthladdoedd yng Nghymru a ddefnyddir gan deithwyr yw Caergybi (77.5% o deithwyr), Aberdaugleddau (11.3%) ac Abergwaun (11.2%).