Tidal conditions have affected a number of the Manxman's sailings this weekend.
The Steam packet Company says Saturday night's crossing to Belfast is set to depart the Manx capital at 7.30pm and expected to arrive just after midnight.
However it's return leg is scheduled to leave at 2.30am and not arrive back in Douglas until 8.30am, a journey time of six hours.
Other sailings affected include tomorrow's 2.15am crossing from Heysham, which will now depart earlier at 1.30am.
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