WIGHTLINK has apologised for the latest disruption to its Ryde-Portsmouth Harbour FastCat service.
Services remain disrupted this week as the company replaces an engine on Wight Ryder II.
Aware of an engine defect, Wightlink had already replaced both engines on Wight Ryder I and one on Wight Ryder II.
The second engine on Wight Ryder II was being replaced this week as a precaution according to a spokeswoman.
"Work is expected to be complete by Friday with the vessel entering service the next day.
"Caterpillar is a world renowned manufacturer of marine engines and Wightlink is working with it to secure a solution to the engine issues experienced since the introduction of the Wight Ryders in September 2009.
"Since the beginning of the year on the route there have been 21 cancellations for technical reasons from Portsmouth Harbour and 21 from Ryde Pier, Isle of Wight, out of 6,456 scheduled sailings — or 0.65 per cent," said the spokeswoman.
"We recognise there is still room for improvement and we apologise, once again, for any inconvenience caused by the current disruption to service," she added.