003- Wouldn't be complete without a couple of cannon balls!
The large ball is a so-called Coehorn exploding shell. The coehorn portable cannons had limited use at sea, but were definately used on some ships. This shell probably dates 1810-30.
The two smaller balls are 2 pounders, a favorite of the Americans. Smaller round shot such as these might have been used on swivel- or deck guns to disuade boarding parties