Sailings tonight and tomorrow face possible disruption due to forecast poor weather.
The 7.45pm Ben-my-Chree service tonight to Heysham and its return tomorrow at 2.15am are subject to delays or cancellation - a final decision on both will be made by 5pm this evening.
Meanwhile, the 8.45am Heysham crossing on Tuesday and its return planned for 2.15pm the same day are also in doubt.
A final verdict on those will be made no later than 7am tomorrow morning.
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