The Steam Packet Company says it's cancelled two sailings today, with another two at risk.
Bad weather meant this morning's 8am crossing from Douglas to Heysham and the Manxman's 1.45pm return were both called off.
At risk last is the Manannan's 3pm trip from Douglas to Liverpool and return at 7.15pm.
A decision on both of those will be made by 1pm.
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