But they could still be cancelled
The Manxman sailings tomorrow (6 December) are being rescheduled due to forecast adverse weather conditions.
The 8.45am trip has been pulled forward to set sail from Douglas at 8am instead.
The return journey from Heysham is also leaving earlier than initially planned at 1.30pm.
Passengers are being told to check-in no later than 7.15am and 12.45pm respectively.
Both journeys remain subject to further disruption and possible cancellation, with a final decision expected to be made by 6.30am.
Tomorrow's 7.45pm crossing and Thursday's (7 December) daytime trips are also at risk, with final announcements due by 5.30pm tomorrow.
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