Steam Packet says teething problems are normal for new vessels
The Steam Packet Company says it doesn't expect the Manxman to be perfect yet, but its confident any issues can be fixed.
The new vessel entered service in August, taking over from the Ben-my-Chree.
This week, an issue with the freshwater supply has left passengers unable to use the drinking water fountains or have hot drinks during crossings, while others have reported problems with lifts and non-flushing toilets.
However, the Steam Packet has confirmed it is making bottled water available for free to passengers in need.
The operator's Managing Director Brian Thomson says some challenges are to be expected: