With widespread disruption to ferry services on Saturday, two more sailings on Sunday could now be under threat.
The Steam Packet company says the Manannan's 7.15am crossing to Liverpool and her return trip at 11.15am could face cancellation or rescheduling.
A decision on both is expected to be made by 5.15am on Sunday morning.
Meanwhile, the Manxman's 8pm sailing to Heysham on Sunday and 2.15am return on Monday have now also both been cancelled.
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