The Steam Packet says passengers have more disruption to look forward to as dredging takes place in Douglas harbour.
In a statement, the company says it's grateful for the Department of Infrastructure for already carrying out some work after the Manxman ran aground at the start of March.
But it says while more dredging is done, it'll need to reschedule some services.
In its statement, the company hasn't included any details of when disruption might take place, which routes might be affected or when the work may be complete.
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