Gusts of up to 55mph are forecast
Two Steam Packet sailings this weekend are 'at risk' due to forecast adverse weather.
Saturday’s 7.45pm journey to Heysham, and the 2.15am return to Douglas the next day, may be cancelled.
A final decision will be made by 5.30pm on Saturday (21 December).
Ronaldsway Met Office is forecasting strong to gale-force winds that day along with severe gales on Sunday.
Sunday's Belfast services have also been rescheduled. The 7am departure will now head to the Northern Irish port at 6pm, with the return crossing originally scheduled for 1.15pm now departing at 1am on Monday.

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