I've got a 15mm/18mm scale Black Pearl ship for sale, which could also double as Blackbeard's Queen Anne's Revenge, or an armed merchant, if desired – just need to swap out the flags.
Shown below, is the superb wooden hull surface detailing, with 15mm Peter Pig pirates on deck, individually based on small metal washers, for scale comparison:
She has 18 guns, but ports for six more on deck, which match up perfectly with the small cannons from Peter Pig's 15mm Pirates range, should ye decide to upgun her, to give her 24. Plenty of room around the rails, for adding swivels as well, in order to give her even more firepower.
The deck is large enough for a decent sized boarding action to be fought on board, against other pirate vessels, and/or larger naval warships:
$20 USD, plus shipping at cost, for a seaworthy ship ready to set sail on the azure seas o' de Caribbean. Same, for the Chinese Junk, shown below, also with Peter Pig 15mm pirates on deck:
E-mail calidreamer3 AT hotmail }dot[ com