The World Underwater Federation, CMAS, recognizes four main levels of dive education indicated by a one star, two star, three star, or four star designation. One star indicates an ability to dive in the company of an experienced diver, two star indicates additional skills and the ability to dive with a diver of the same grade, three star indicates the additional skill in leading a group of divers of any grade in open water. Four star diver is an award issued by a national technical committee to a diver competent to use divers and diving in order to achieve major tasks or project objectives.