Voyages of Discovery has been forced to cancel a departure on Sunday due to power failures on the ship MV Voyager.

A 10-day Heritage of the British Isles cruise due to depart from Portsmouth has been cancelled following the problems on the vessel on Tuesday.

This follows the abandonment of the current nine-day cruise to Ireland due to “unusual and unforeseen technical problems” with two of the four generators on board.

Voyages of Discovery said it was contacting passengers booked on the June 2 cruise and any affected trade partners.

Passengers will receive a full refund, or the option to receive credit towards another booking for a cruise on MV Voyager to the value of 140% of their original fare.

Travel arrangements are being made to return all 487 passengers on board the vessel in Killybegs, County Donegal to Portsmouth, where the current cruise originated.

“Specialist engineers are working hard to repair the affected generators. MV Voyager will remain in Killybegs while these repairs continue,” the company said.

“Voyages of Discovery has apologised to all passengers for these unusual and unforeseen circumstances which have arisen as a result of events beyond their control.”

MV Voyager was on a nine-day Celtic Treasures cruise which left Portsmouth on May 25. The ship was due to sail from Killybegs on Tuesday and end its cruise on June 2 in Portsmouth.

The vessel, which originally enterer service in 1990, previously sailed as the Alexander von Humboldt. It was acquired by Voyages of Discovery parent company All Leisure Group and entered service for the brand this year after a refurbishment.