The Steam Packet Company has rescheduled 10 sailings over the coming days.
The Manxman's 3.30am trip from Heysham to Douglas tomorrow will now set off at 4am, with her trip at 8.30am leaving at 9am.
Her trip at 1.45pm trip from Heysham to Douglas will now set sail at 4pm, and her sailing at 7.45pm has been cancelled.
All of Friday's sailings have also been disrupted and will set sail early because of tidal conditions.
Early morning sailings on Saturday and Sunday will also set off early.