The Steam Packet says two ferries have been cancelled today.
Manxman's 8am crossing from Douglas to Heysham will no longer be going ahead, and neither will her 1.45pm return from the port this Thursday, February 5.
Meanwhile, two other crossings are at risk of disruption - this evening's 7.15pm service from the capital to Heysham, and the 1.45am return from Lancashire on Friday, February 6.
You can check the Steam Packet's website for the latest updates.
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