More and more families are opting for cruise vacations. Modern cruise ships are safe and fun for passengers of all ages. However, as with any family outing, parents need to be vigilant about assuring that their children remain safe.

One advantage of a sea voyage is that the entire crew is dedicated to the safety and enjoyment of all guests, and especially of the youngest ones. Most cruise lines provide children with color-coded wrist bands that must be worn at all times. This helps reunite lost children with their parents....