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.
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