Morning and afternoon sailings today will set off earlier than previously planned.
The Steam Packet Company says the 8.45am Ben-my-Chree service to Heysham will now depart at 8.15am whilst its return at 2.15pm will now depart at 1.30pm.
Meanwhile, this evening's 7.45pm voyage remains in doubt due to the poor weather conditions.
A final decision on that will be made by 5.30pm this evening.
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