The Steam Packet Company has rescheduled four sailings as bad weather continues to affect sailings.
Friday's 8am Douglas to Heysham crossing on the Manxman will now leave port at 9am, while her 1.45pm return trip is also delayed by an hour.
The 7.15pm sailing tomorrow will leave the Island at 7.45pm.
Meanwhile, the return voyage due to leave at 1.45am on Saturday will set off at 2.15am.
Viking longboat races today
Postal vote applications have to be in soon
Mum launches petition over university support
Bus services north and south face disruption later
Wildlife Trust unveils woodland plans
Deadline looms for by-election nominations
Biker in UK hospital after Mountain crash