Sailings tonight and early on Tuesday are facing potential delays or cancellation.
The Steam Packet Company the 7.45pm voyage to Heysham tonight and its return at 2.15am tomorrow may not go ahead due to poor weather being forecast.
A final decision on both crossings will be made by 5.30pm this evening.
Journeys to and from the Lancashire port this morning and this afternoon are currently unaffected.
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