In all our years of cruising the only times we have experienced significant propulsion problems was when we were on pod equipped vessels. I'm certain that eventually all the bugs will get worked out within the units manufacturered by the three pod companies and that fixed screws, rudders and stern thrusters will be obsolete, however, this concept has been around now for over a decade and they certainly have had their fair share of teething problems.

 

Celebrity must lead the list for pod problems. This is the latest. It appears to me here that the company is pretty miserly in handing out adjustments, at least compared to the those Princess gave when they hit a rock in France and had to cancel a couple of voyages last October.

 

 http://www.cruiselawnews.com/2017/03/articles/power-loss-1/celebrity-cancels-cruises-aboard-summit/index.html