Sailings tonight and tomorrow are cancelled.
The Steam Packet Company has confirmed its 7.45pm voyage to Heysham and its 2.15am return won't go ahead due to poor weather forecast.
Meanwhile, sailings tomorrow seem unaffected.
Two yellow weather warnings will be in place across the Island from later this evening.
High ground could see 4 inches of snow on Saturday night
Mountain Road unlikely to open before Monday
Yellow warning for freezing temperatures tonight
School bangers night called off
AK47 and Uzi handed in to police
"No dispute" over Liverpool Ferry Terminal, says main contractor
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Minister to face question about bus strike