In a statement on social media, Fred Olsen said they had recently upgraded their onboard technology, and although it worked perfectly during sea trials, they had since identified a "potential issue" which they are currently working to resolve.
The boat remains in Portsmouth (England UK) while works to resolve the issue take place. All passengers, both onboard and those due to sail on the affected voyage, are being provided with updates on the situation.
"We would like to give you a further update on Borealis and her location. It has been confirmed that we will not now arrive in Liverpool at the time we had planned. Our technical team continue to work to resolve the issue. The delayed departure from Portsmouth means we unfortunately won't arrive in Liverpool on schedule for our next cruise - S215. Therefore we have made the difficult decision to cancel this sailing."
For more Borealis accidents and incidents see the ship's CruiseMinus page.