Sailings to and from Heysham tomorrow are facing potential disruption.
The Steam Packet Company says, due to poor weather being forecast, the 10am Manannan service to the Lancashire port and its return at 2.15pm could be subject to delays or cancellation.
A final decision on both voyages will be made by 8.30am on Sunday morning.
Meanwhile, Ben-my-Chree services on Sunday evening at 8pm and early Monday morning at 2.15am are also in doubt.
A verdict on those two journeys will be made by 5.30pm tomorrow evening.
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