There are several companies carrying ro-ro cargo to and from Ireland.
Tweleve Quays
Twelve Quays is a purpose built ferry terminal built to allow ferries to berth quickly no matter the tide level. Ferries travel from Birkenhead Twelve Quays across the Irish Sea to Belfast (Northern Ireland) and Dublin (Republic of Ireland). These ferries carry mainly trailers, though they all have passenger accommodation. Mersey Viking and Lagan Viking both have 5 vehicle decks and spacious passenger accomodation.
Ships based at Twelve Quays: Dublin Viking,
Lagan Viking,
Liverpool Viking,
Mersey Viking
In August 2003 the Dublin Viking collided with the landing stage stranding several workers on the gantry. They were rescued by a lifeboat without any injuries. The landing stage was soon towed back into place and service resumed.
In November 2005 the ship was was renamed from Mersey Viking to Dublin Viking. In December the ship moved from the Belfast service to the Dublin service.
On Sunday 18th December 2005 the ship ran aground. The ship did not appear to be damaged but it was taken out of service for safety inspections.
By May 2005, the marshalling area was extended at Twelve Quays (Birkenhead) and two faster vessels with greater passanger capacity were ordered: Lagan Viking Mersey Viking
In May 2006 a bomb was discovered.
December 2006 -> January 2007 - maintenance work done in a Birkenhead dry dock. Note the Maersk "star" on the funnel and the shiny exhausts which are no longer black.
On Saturday 11th I heard there had been a nasty accident in Dublin on evening of Tuesday 7th as the Dublin Viking was leaving the berth.
On Monday 13th I received some more sad news... one of the seafarers involved in the accident had died.
The new Mersey Viking arrived at Twelve Quays in December 2005. Like her sister ship Lagan Viking this ferry has five vehicle decks and a large amount of passenger accomodation. To get an idea of scale, look between the orange life boat and the funnel - yes that blob is someone standing on deck.
The picture (below) shows an enlarged view of the funnel section. The lights are on the railing of the top car deck. Just below is a walkway and standing there is someone getting some fresh air.