As a pirate, Blackbeard would have been very aware of his need to be well armed. It was all well and good to catch another ship, but if you couldn’t overpower them your career as a pirate would be short and unsuccessful. When it began its final voyage, La Concorde was armed with only 16 cannon; enough to mount a token defense with a healthy crew, but not a heavy armament by any measure. How then did Blackbeard use such a lightly armed ship? Simple: he added more guns.