The Steam Packet accompany says two sailings have been brought forward because of bad weather
Strong winds in the Irish Sea later have prompted the changes.
The Manxman's 7.30pm crossing from Douglas to Heysham will now leave at 7pm.
Her return trip, scheduled to leave Heysham at 1.45am, will set off at 1am.
Bee Gees to release limited-edition box set
Northern Irish politician criticises Manx visa rules
Elective surgical unit opens at hospital
Piling rig on TT course tonight
10-day bus strike from next weekend
Yellow snow warning issued by forecasters
Ramsey harbour keeper completes 3,000-Mile Atlantic crossing
Higher ground could see overnight snow