@jasonwolf unless he shoots down multiple airships with one shot, he's not OP. The enemy fleet is ours to destroy, so have fun with that, but don't overdo it. Show some struggle to make things happen, yeah? Now, regarding your inquiries about the airships. I'll fully describe the airship concept, their properties and way of operation, so everyone gets it down and we can avoid confusion in the future.
There are five parts of importance in an airship: the main body, the cannons, the rigid balloons, the rudder, and the engines.
The main body resembles that of a medieval ship (a schooner, a galley, a frigate, depends on the type of airship). Its hull is usually protected by steel or tristanite and has openings for the cannons. Instead of mast and sails, the body is chained to the rigid balloons which keep it afloat. The main body is usually decorated with a figurehead resembling a certain Pokemon (the figurehead of the Storm's Fury is a Gyarados)
The cannons are placed both on the deck and belowdecks. More advanced cannons operate on psychic energy fed to them by the engines, rather than using gun powder. The psychic energy is enough to create a blast that would send off anything armed to the cannon (like Zack's iron spear). The projectiles fired by the cannons are usually wild Pokemon, preferably round ones that know how to use Selfdestruct or Explosion, such as Geodudes, Voltorbs, etc. and are kept asleep thanks to the use of a natural anesthetic potion.
The rigid balloons are cylindrical gasbags made of rubberized cotton, which helps them maintain their rigid shape without being too heavy at the same time. Their part is to keep the ship afloat; commonly, there are two of those chained and wired to the sides of the hull of the main body. The wires are connected to the fuel tank, which is usually belowdecks at the back of the ship, and the engines. These balloons are full of flogistron, a special type of fuel that is extremely lighter than air and flammable. Acceleration is achieved by the pressure applied from the engines to the back of the balloons, so that the flogistron is gathered to the front of the balloons. In short, the ship is moving forward by pressure applied sideways and upwards on the flogistron.
The rudder directs the pressure applied by the engines onto the balloons themselves, rather than the fuel inside them. Steering the wheel to the right, for example, will cause pressure to be applied sideways, to the right, onto the balloons, so while the flogistron takes them up and forward, the balloons themselves are directed to the side. Next to the rudder, there's commonly a panel which regulates all the psychic activities of the engines - how much pressure they apply onto the flogistron, how much onto the balloons, and which cannons are online and which are offline. Note, there was no ruder in the first generation of airships; the engines regulated everything, instead, and an engineer had to also be a pilot who saw through the eyes of a psychic-type that acted as a scout.
The engines are powered by the latest-generation crystals called dyna-cores, small, square crystals which hold an awesome amount of psychic energy stored in them. There are usually four of them on an airship, located belowdecks, and each is powered by one dyna-core. The engines are responsible for running literally every system on the airship: applying pressure onto the balloons, feeding the cannons, maintaining the barriers and directing the flogistron from the fuel tank to the balloons through wires. Regulating the engines takes a considerable amount of skill, so every airship has an engineer, apart from a pilot and an artillery handler.
Zack has made quite a few modifications on the Storm's Fury when he became the engineer, but I'll mention only the major one: he installed two massive propellers to the back of the ship which are connected through wires to a machine next to the engines; that machine has an iron strut, which Zack grabs and channels his electricity through, so the propellers start moving. He was thinking of installing a battery there and charging it before the need to use the propellers appeared, but he hasn't had the time!
As for Romulus, he is 29 years old. He studied in the ECUL for one year, then took his training outside Union City and into Wrothgar, where he served the Vandremonde family (Lord Chantalai and his daughter Alucianna) as a bodyguard for a year, graduated, then was dismissed when the first Stygian Rebellion started, 9 years before the present. He fought alongside the newly appointed leader, Garland, in the Deathbringer's Mark where they crushed the opposition. That was the only time Romulus has ever really been close to his Gold Tribe comrades, but he wasn't particularly known by then. After the rebellion, Emperor Dareon pardoned Lord Chantalai and Garland insisted that Romulus returned under the Vanir Lord's service as a bodyguard. Romulus refused for a time, choosing to abandon his duties as a member of the Gold Tribe "for personal reasons" and disappeared from public for nearly six years, before returning to Union City, after hearing that Lord Chantalai was looking for a faithful bodyguard. Up until now, he's served him for three or so years. If you have any suggestions for a possible joint backstory between Romulus and Aecron, feel free to PM me it and we'll work things out.
