General Kopofiel praised, "Lord, you have considered everything very thoroughly. Indeed, once we reach the scale of a three-masted sailing ship, speed will be the key.
Look at the largest one, with its thick external hanging armor combined with an abundant array of defensive equipment. While it grants them extremely strong defensive and offensive powers, it also makes it exceedingly cumbersome. Its sailing speed definitely won't be too fast, making it an easy target, and the probability of it taking damage in battle is too high. This factor alone eliminates the possibility of it serving as the flagship.
Now, look at the smallest one. Do you see those two spire constructions, one at the front and one at the back?