The departure of the Irish Ferries service to Rosslare from Pembroke was delayed this afternoon following what is understood to have been an accident on board.
The Isle of Inishmore was awaiting an ambulance after an incident on the car deck.
A passenger sent this image.
One person is understood to have been injured by falling from a bus.
An ambulance spokesman said: "We were called shortly before 4pm today to reports a woman had slipped aboard a ferry in the dockyard at Pembroke Dock."
It is understood paramedics arrived at about 4.55pm.
A passenger waiting on the ferry said an announcement had been made on board for anyone with medical experience to make themselves known to crew.
The ship was extremely busy with Welsh rugby fans travelling to Ireland for tomorrow's Six Nations Clash.
The ferry was due to sail at 2.45pm but eventually got underway at 5.15pm.
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