Saturday and Sunday services also at risk
Two of tomorrow's Manannan sailings have been cancelled due to the adverse weather forecast.
The Steam Packet Company has confirmed the 6.45am crossing to Larne and the return service at 10.45am won't be going ahead.
The operator is warning of the possibility of further disruption to all services between tomorrow morning and Sunday evening.
Gale to severe gale force winds are expected over the next three days.
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