Sailings tomorrow have been rescheduled for earlier times but remain in doubt.
Crossings to and from Heysham tomorrow morning and afternoon are now planned to depart at 7.30am and 12.30pm respectively but are still subject to delays or cancellation due to poor weather being forecast.
A final decision on both will be made by 6.15am tomorrow morning.
Meanwhile, the 7.45pm service to the Lancashire port on Wednesday and its return at 2.15am on Thursday also face potential disruption - a final verdict on those will be made no later than 5.30pm tomorrow evening.
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