Passengers of an Alaskan cruise will have to put the remainder of their vacation on hold.

Celebrity Cruises is blaming a mechanical issue with one of their propulsion units on the "Celebrity Millennium" for ending their 7-day cruise early.

The ship was able to make it to a port in Ketchikan, Alaska on Tuesday.

Celebrity Cruises have also canceled four future cruises scheduled on the "Celebrity Millennium" through Sept. 13th.

Celebrity Cruises said they plan to give guests a full refund and a certificate for another cruise.