Berlitz is a pretty accurate book, but I would be surprised ifthey don't have 110.
Depending on what you want to use on the ship, the answer may be as simple as a two prong converter.
Laptops, camera and cell-phone chargers are often compatible and can tell how much voltage they are seeing. Just check your device and SEE if it says "voltage 110-220 V." If so, you just need a two-prong converter.
BUT, if you are talking about hair dryers, curling irons and other things that are more "electric" than "electronic" then you CAN'T just plug it in - you could burn your hair off.