The officers of a yacht club may fly various burgees appropriate to their rank: for example, the commodore may fly a swallow-tailed version of the club burgee. A past-commodore may also be given a distinctively-shaped flag.
Personal burgees
Personal burgees are called private signals, and have also been designed and flown for over one hundred years. Much like club or burgees of rank, personal burgees must be distinct to the owner, but unlike the former, are often swallow-tailed.