The delayed arrival of the marine surveyors has meant all Manannan's weekend sailings have been cancelled.
The boat will not be making its normal trips to Liverpool and Ireland after damage caused when it collided with the pier on Wednesday night.
The AV Arrow will be taking over freight services so the Ben-my-Chree can operate at maximum passenger capacity.
Passengers are asked to check their online account for more information about their journeys.
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