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.
Bottleneck car park closes in face of weather
Weather warning issued for high tides tomorrow
Two more ferry crossings called off
Plantation to close for tree felling work
Thomas the Ramsey Cat supporting two charities this year
Waves blast out Sea Terminal glass barriers
Southern local authority announces below-inflation rates rise
Laxey Promenade shut as waves wash onto road