Strong winds mean two of the Manxman's sailings could be called off later.
The Douglas to Heysham sailing at 7.45pm and her return trip setting off at 2.15am on Friday morning are both under threat.
The Steam Packet says a final decision will be made by 5.30pm.
Forecasters say winds of up to 55mph may sweep the Island later.
Sam Barks to present radio show
Hospital sees nearly 300,000 calls over past year
Police tackle school parking offender on first day back
Middle gets pre-election requisition meeting
Anyone can make parking discs - but only the DOI's are legal
Douglas hotel's football sign could be worth £15k
Douglas church becomes House of Dog
Manx mums relate to Paris's school holidays feelings