Purple navigator is your best helper on your sailing trip.

In AO, according to the different growth rate and quality, navigators can be divided into four types; they are white, green, blue, and purple. Purple navigator is the rarest with the greatest power. They are leaders and elites of navigators. The enviable growth rate of +4 each level makes other navigators never keep up with. They have specialties, and excel in their own fields compared with other navigators. Each additional purple navigator is equivalent to an extra fighting power, so it is the dream of each sailing master to have a group of purple navigators.