Two Steam Packet sailings later this week could be at risk of being cancelled.
Bad weather means the crossings on Thursday could be at risk.
The company says the Manxman's 1.45pm Heysham to Douglas voyage and her return trip at 7.15pm could be called off.
A decision will be made by 6am on Thursday.
Much-loved pub dog will be missed
City centre street closed by falling roof tiles
Second yellow weather warning issued for today
Voting open tomorrow for capital's customer service champion
Cocaine dealer's sentence 'not unduly lenient'
Plans submitted for beauty salon premises
Island adopts formal definition of antisemitism
Commissioners recruiting for new clerk