Steam Packet confirms Ben-my-Chree will now leave at 1.15am.
The Steam Packet Company has brought forward its overnight sailing due to the weather forecast.
The ferry operator says the 2.15am departure from Heysham will now leave the Lancashire port at 1.15am.
Passengers are asked to check in by 12.30am.
Winds reaching up to gale force eight are expected in the Irish Sea tomorrow morning.
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