Allegedly, there was a sailor relatively recently (last decade or so), who had “obtained” a cannonball from the USS Philadelphia, and was preparing to return it to the U.S., and donate it to the Marine Corps Museum in Quantico. Unfortunately for the museum, the cannonball had to be abandoned, along with the plan to return it stateside in short order as more pressing issues arose, and the cannonball was unnecessary dead weight impeding the timely addressing of the more pressing issues. Allegedly......... hard to tell what is a true story, and what is just a sea story these days.....