From Final Fantasy Wiki

The Archadian Imperial Fleets in Final Fantasy XII boasts probably the largest fleet of airships in the Final Fantasy series. The Archadian Imperial Army relies heavily on the firepower of these fleet during their invasions and campaigns. The most prominent fleet in the story is the Western Armada, under the command of Vayne Carudas Solidor, Consul of Rabanastre, which commands the skies and seas within Archadia's western territories.

Fleets

Each fleet consists of several Light Cruiser and Cruiser Class ships, and is usually led by a Dreadnought Class ship. While the exact number of fleets is never revealed, there are at least 12 fleets.

1st Fleet

Led by the Odin, this fleet was part of the large fleet involved with guarding Archadia from the Resistance fleet.

2nd Kerwon Expeditionary Force

The fleet called in to replace the 8th fleet, which has been decimated during their flight above Jagd Yensa.

8th Fleet

The 8th fleet, led by the Leviathan

The 8th Fleet is a formidable force, and the fleet most featured in Final Fantasy XII. The entire fleet is led by Judge Ghis, onboard his ship the Leviathan. The following ships are part of the 8th fleet:

• Light Cruiser Class, the Shiva
• Cruiser Class, the Ifrit
• Dreadnought Class, the Leviathan

However, this fleet was sunk when Judge Ghis tried using the Dawn Shard. Every ship sank in the heavy mist explosion. Later, the fleet is reassembled, although which ships are involved are never revealed.

12th Fleet

The 12th Fleet is led by Judge Zargabaath onboard the Alexander. This fleet was formed after Vayne killed his father and was to be used if Rozarria would attempt to invade as the bulk of the Archadian force. It is mostly involved with protecting the Bahamut during the Resistance Battle above Rabanastre.

Ship Classes

The ships of the Archadian Fleets are usually separated into several classes, each with a specific purpose.

Fighter Class

Light ships meant for lesser combat. They usually have small gun turrets, and even engage foot soldiers in combat. Two classes of fighter are the Remora and Valfarre.

Light Cruiser Class

Not meant for heavy battles, they have weaker armor and lighter weaponry than most other ships. As such, they are much better at high-speed maneuvers and attacking in groups. The Shiva is a Light Cruiser Class ship.

Cruiser Class

Heavy ships more suited for actual battle. They have much tougher armor than their light counterparts, and a lot of cannons in their arsenal. The Ifrit is a Cruiser Class ship.

Heavy Carrier Class

Heavily armored ships, these ships are not meant for battle. Instead, they act as walls and carry troops to their destination. They are the biggest class of ships, and have entire hangars hidden in them. The Alexander is a Heavy Carrier Class ship.

Dreadnought Class

An all-round battle ship, the Dreadnought Class is engineered for combat. Its armor is impossible to penetrate, and its firepower is unmatched. This class of ship is usually in charge of an entire fleet. The Leviathan is a Dreadnought Class ship.

Sky Fortress Class

The ultimate class, there is only one ship in the Archadian fleet that bears this title, the Bahamut. Gigantic, this class is very slow, and requires an enormous amount of energy to power. However, its firepower is devastating, sporting a mist cannon that can destroy entire ships in one shot.