The Steam Packet Company is warning two Ben-my-Chree sailings on Friday may be postponed because of bad weather.
The Irish Sea's set for heavy rain and strong winds which the company says may mean calling off two of its scheduled services.
The 8.45am Douglas to Heysham trip may be affected - the ship's master will make a decision at 7am.
The Ben's return voyage, due to leave Heysham at 2.15pm, is also under threat.
One hour MEDS phone line outage this evening
Planning fireworks? Let the airport know
FOI reveals nearly 90,000 untaxed vehicles
Ramsey Remembrance service to be marked by maroon rockets
MEDS phone line to be down temporarily
Committee to examine link between poverty and poor academic performance
Police advice for trick-or-treaters to stay safe
How will Manx Care reduce the number of negligence claims?