 | SERF: The rank of Serf is the lowest in the Imperial Navy. Serfs in most protectorates are trainees, and only in the XXI protectorate are they given command of their own ships. |
 | MASTER: Masters are the mainstay of the Imperial Navy. Most skilled crewman are Masters, and they can be found in every department of every large warship. They also occasionally command carrier-based fighters, although this is rare. |
 | SQUIRE: Squire is the first Imperial rank to which promotion is by selection. Squires command small teams of Masters, and may have Serfs attached to their team as apprentices. They are also the most common pilots for carrier-based fighters. |
 | KNIGHT: Knights are the highest non-commissioned rank in the Imperial Navy. they command sections of crew on large ships, are often Squadron leaders in carrier-based squadrons, and may be given independent command of their own ship in protectorates other than the XXI. In all the protectorates other than XXI, this is the highest rank a person of common birth can reach (except in very exceptional circumstances). |
 | LORD: Lords are representatives of the Imperial Noble families, trained from birth for leadership. The rank of Lord is given to officers currently going through naval training. Lords may be found as crew on independent ships, or as junior officers on large warships. Except in the XXI protectorate, they very rarely command their own ship. |
 | BARON: Barons are the standard officer rank. Fully trained lords, they are often found as mid-level officers on larger ships, heads of department on smaller warships, and commanders of independent craft. |
 | VISCOUNT: Viscounts are usually experienced and decorated Barons. Their most common duties are those of department head on large warships, commanders or executive officers on smaller warships, and squadron leaders of small ships (up to Imperial Courier size) |
 | COUNT: Counts have to pass a rigorous command training course on their promotion to this rank. They usually form the command cadre of all larger warships, and are very rarely found on any ship smaller than an Imperial Trader. |
 | EARL: Earls are the lowest ranking Flag officers. Having just graduated from staff college, Earls often command squadrons or small task-forces, being considered responsible for the conduct of that group. An Earl's command is a formidable force against pirate groups or smugglers, and even against less well-equipped rebels, but they rarely engage in fleet actions without support. |
 | MARQUIS: A Marquis will often command a fleet of smaller ships, usually leading them from onboard a Long-Range Cruiser or occasionally a DUVAL-Class Dreadnought. Fleets led by a Marquis are the largest unit usually assembled in one place, and are commonly sent into dangerous situations and even full-scale battles. |
 | DUKE: Dukes are exceptional leaders, and may be called on to lead a major battle fleet during navy-wide exercises or decisive battles during wartime. However, it is much more common for a Marquis to be in command of an entire Solar System or to lead a Protectorate. |
 | PRINCE: There are only thirty-four Princes in service with the Navy at the current time, of whom twenty-nine are members of the Duval family. Princes may lead Protectorates, or they may be part of the Naval Advisory Council in Duval City, Achenar, where they control and organise the efforts of all the different protectorates into a coherent whole. |