A burgee is a small usually triangular shaped flag or pennant. On power boats it is usually flown at the bow, though it can be flown anywhere you like, really. The design on the burgee is a unique one to designate the yacht club the owner belongs to.
As with most manufacturers, Sea Ray sells a burgee: http://www.searaycollection.com/product_p/sr1303.htm
The Club Sea Ray burgee is not, as far as I can determine, available for purchase.