Hi. We were on the DP this summer to Alaska, and I plugged regular plugs that one would use in the USA into the outlets. I am not sure what that voltage is, but I did not need a power converter
All the Princess ships have 110 volt outlets in the cabin. I belive most also have one 220 outlet. However, keep in mind that the wattage is often limited on most ships which can be a problem for high-wattage hair dryers. When this has happened to my wife it forces her to use her hair dryer on a low setting.