Before a person can be assigned to be a coxswain, they have to go through a qualification procedure, be certified and maintain the certification to be a coxswain. Upon certification, they are awarded the Coxswain Badge. This qualification procedure requires a significant amount of practice in boat handling as well as previous experience as a boat crew member. Any Coast Guardsman (enlisted or officer) may become a coxswain upon proper qualification. An advancement to boatswain's mate second class requires that the individual qualify as and maintain certification as a coxswain. A commanding officer or officer in charge of a land based unit with boats has to be certified and stay certified as a coxswain on all boats in the unit or be relieved of command.