Able to carry 50 additional crew and 12 extra cannon, the square-rigged royal galleon is a larger and much more powerful version of the trade galleon. However, like its smaller cousin, the royal galleon is designed primarily for stability and reliability, and it does not make a particularly effective warship. But when properly manned and armed, the royal galleon can prove to be a surprisingly tough opponent.

Still, the Spanish government often sends military escorts with royal galleons when they are carrying valuable cargo. The trade galleon and treasure galleon are built along similar lines to this vessel.