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.
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