Eating is only good when you're hungry, and it's good to deal with people only when you're loving.

- Leo Nikolayevich Tolstoy (one of the most outstanding writers in the history of world literature)

After figuring out the reality of the three general warships of the Yamato Empire, Kozao, Guanship, and Anzhai, Namus, who was still a little nervous, completely relaxed; in his opinion, the naval warships of the Yamato Empire were simply lambs to the slaughter that sent their fleets to the battlefield!

You must know that the First Roman Fleet under the command of Nams, in addition to the flagship of the seven-column battleship giant 'Empire', also had a full 20 double-column battleships and 30 three-column battleships;

Born into a family of Roman admirals, Namus was never a arrogant man, nor was he a self-effacing inferior, and his confidence in his fleet and his contempt for the warships of the Yamato Empire came from the Romans' superb shipbuilding skills.

The most common of the Roman warships, the double-row warships and triremites, also known as two-pale warships and three-paddle warships, were formerly relatively primitive single-paddle warships, each warship had a layer of oars, and there were twenty-five oars on each side of the ship.

With the improvement of Roman shipbuilding technology, the ship became larger, so the oarsmen were divided into two or even three layers to accommodate more oarsmen to provide greater power for the warship; compared to the simpler two-story oars, the slightly more complex three-oared warship had the oarsmen on one side staggered up and down, the third oarsman on the deck, and the first and second oarsmen below the deck.

Later, as the number of ships continued to grow, it would be difficult for a single oarsman to paddle a large oar, so there were five-oared ships, with the oarsmen on the lowest level each rowing an oar, and the upper two layers sliding an oar for each person, for a total of five oarsmen rowing three oars;

Regardless of how many floors the oarsmen sat on, the total number of oarsmen in the upper and lower rows has always been a sign of the size of the ship, so there is a division of two-columns, three-columns, five-columns, and even seven-columns, and the Raven is a different kind of battleship.

It is evident from the design of the double and triple battleships that one of the main problems faced by the designers of such typical Roman battleships was to avoid overweight on the upper part of the battleship, and that the conditions that determined whether the battleship was stable and whether it could return to its own level when tilted were often considered according to the stability of the battleship.

Although the Romans did not systematically establish a system of physics and mathematics, they already knew most of the basic physics and mathematical concepts, and the intelligent Romans knew that the movement of a battleship was like concentrating its weight on a certain point and pulling it downward towards the center of the earth by gravitational pull.

For example, if the battleship is tilted to one side and the submerged hull is smaller, the center of gravity of the part of the ship will move in the same direction, the buoyancy of the water will act through the center of gravity of the submerged part of the water, and the buoyancy of the submerged part will act vertically, and as long as the center of mass of the submerged part of the ship moves sufficiently in the direction of inclination, then its upward buoyancy will be canceled out by transferring the downward gravitational force to the lowered side of the hull.

The final effect of the two forces acting together will be to restore the ship's stability on its own, and the ship's center of stability is the distance between the upward force of its center of mass and buoyancy and the intersection of the ship's centerline, which means that the greater the center of gravity, the more stable the ship's structure.

Ships designed and built according to this expertise were certainly not to be underestimated, as in the case of the triremes, which were generally the main force of the Roman fleet, with a total length of 37 meters, a total of 100 oarsmen on three decks, a length of 4 meters, a total weight of 45 tons, and a continuous voyage of about 200 nautical miles at a speed of nearly eight knots (depending on the fresh water and food on the ship).

The reason why the full crew of a triremite, with only a hundred oarmen, would be one hundred and twenty was because there were also twenty professional sailors on board, each with their own duties, who were sailmen, helmsmen, lookouts, and so on, and their status was one higher than that of oarsmen.

After knowing enough about the size of the triremes, the composition of the crew on the battleship, and the availability of food and fresh water on the battleship, it is possible to estimate the steady height of the battleship and adjust the structure of the battleship.

The Romans were susceptible to imaginary changes in the figures obtained by the draft of the battleship, the amount of wood used in the battleship, the arrangement of the oarsmen in the battleship, etc., and even the slightest change in one or more of these factors could cause a change in the wind force of five or six kilometers per hour, which could capsize the battleship.

However, as long as the parameters of the various types of ships remained the same, the ratio between the values of the center of gravity would be correct, even if neither of them was absolutely correct, since this method was correct, and the Romans would have conceived that the transition from three to four or five ships would have changed as little as possible in the hull and its contents.

This scenario seems entirely possible because the evolution of shipbuilding technology is extremely slow and takes a long time to accumulate, but the least possible estimate in this analysis is the amount of ballast that the ship will bear, since the twin battleships have enough hull space to accommodate enough ballast to allow for considerable changes in the smooth characteristics of the hull.

In estimating the ballast, the Romans were willing to keep the hull as light as possible, in harmony with the other obvious efforts of the hull fitters of the double battleship, that is, to make the hull as much as possible with the strength of the oarsmen, and the estimated ballast was 13,000 kilograms, enough to prevent winds of less than sixty kilometers per hour from blowing the ship down on the ends of the beams.

This apparently unsatisfactory state of affairs suggests that the shipbuilders are under heavy pressure to modify the design of their hulls and, for some of the reasons already mentioned, that the only good option for the shipbuilders to consider is to increase the maximum width of the hull of their ships.

However, this would have to sacrifice some speed, and this was the main reason for designing a ship with more layers in the first place, and in the case of a five-column battleship, if the hull was widened to the same width as the three-column battleship, it would only be fourteen percent faster than the three-column battleship, and its acceleration would be somewhat worse.

If sixty-two oarsmen were added to the top and fifty-four to the middle, the size of the crew would increase by nearly seventy per cent, and if the stability of the five rows had been reduced to what had been foreseen, the rate of increase would be as much as twenty-nine per cent.

It is worth noting that these oarsmen were not prisoners of war or slaves, and the mercenaries had to pay them very well, and a good paddler was paid quite a lot, which is why after Bai Feng recruited the battleship, he had to pay the maintenance fee for the Roman battleship like other regular Roman troops.

Built with these advanced designs, the Trirees can be loaded with all the weapons that are far superior and can ram enemy ships without damage, while the more advanced Five and Seven Ships are equipped with large bow weapons and other shooting equipment!