The Steam Packet says it's doing everything it can to return the Manannan to service after problems with a generator.
Sailings on Sunday and today had to be called off - the company says engineers, including a team flown in from the UK, are trying to repair the problem.
In an update on its website, the Steam Packet says it can't predict when the problems will be resolved.
But it says it'll issue an update on its progress as soon as possible.
Northern bus services to be raised in Keys
Ben out of service for maintenance work this week
Richmond Hill closed again tonight for work
October warmer and sunnier than usual, says Met Office
MHK queries cost of Liverpool awards trip
DOI says it has 20 empty public sector homes
Marquee plan submitted by Milntown Estate
Fire crews called to free driver from crashed car