Sailings tonight are facing potential disruption.
The Steam Packet Company says the 7.45pm Ben-my-Chree service to Heysham and its return planned for 2.15am on Thursday are subject to delays or cancellation.
It's due to adverse weather being expected - a decision on both will be made by 5.30pm this evening.
Voyages to and from the Lancashire port this morning and this afternoon are unaffected.
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