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Imperial Navy Hierarchy

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Imperial Navy Officer

The Imperial Navy has a rigid command structure, seemingly unified across the whole organisation unlike the Imperial Guard which has no standard organization.


Admiralty Ranks

Lord High Admiral

Lord High Admiral (also referred to as Lord Militant Commander or Lord Commander) is the highest rank in the Imperial Navy. There are five Lords High Admiral, each one controlling a fleet of the five Segmentae Majoris. Although all five are ranked equally, command of the Segmentum Solar is considered the most prestigious office.[8] It is not uncommon for one of these Admirals to sit on the Senatorum Imperialis.[3]

Known Lords High Admiral:

Lords Admiral

Imperial Navy Captain

A Lord Admiral commands a Battlefleet[3], and is in charge of all naval forces in a particular sector.

Solar Admiral is a prospective sector commander, awaiting assignment to take command of a particular Battlefleet.[10a]

Known Lords Admiral:


A High Admiral commands a Crusade or collection of Battlegroups.[17]

Known High Admirals:

An Admiral sees command of a Battlegroup, which is an assigned grouping of ships to handle certain situations.[3]

Known Admirals:

Vice-Admiral is traditionally in charge of a vanguard, and as such is usually placed in command of scouting forces of light cruisers and destroyers[10b].

Rear-Admiral is usually an administrative post, based around logistics and planning.[10b]

Battlefleet Ranks

Imperial Navy Officers

Senior Officers

Commodore or Commodore-Captain is a rank within the Imperial Navy, held by personnel such as the adjutant to an Admiral or the commander of a battle-squadron.[7]

Known Commodores:

Lord-Captain or Flag-Captain is the rank given to the Captain of a vessel on detached duty.[10b]

Known Lords-Captain:

Captain: in the Imperial Navy the rank of captain implies that the bearer has command of a ship. On board his ship, his word is law, above that of any other, save the Emperor's own. An Imperial Navy captain receives orders from a Rear-Admiral. He would then interpret these orders, and have them carried out by delegating tasks to his command staff.[Needs Citation]

Known Captains

Commander is a senior officer rank within the Imperial Navy held, for example, by the First Officer of an Imperial Cruiser or the captain of an escort vessel.[4]

Known Commanders:

Lieutenant Commander is a senior officer rank within the Imperial Navy.[4]

Junior Officers

Junior Officers
  • Flag-Lieutenant or Lord-Lieutenant is the highest Lieutenant rank in the Navy, and may be the second in command of a ship.[10c]
    • First Lieutenant[10c]
    • Second Lieutenant[10c]
    • Third Lieutenant[10c]
    • Sub-Lieutenant or Ensign is the most junior Lieutenant rank.[10c]
  • Midshipman is the rank given to 'trainee' officers, who have to pass extensive examinations before becoming a Lieutenant.[10c]

Non-Commissioned Officers

Non-commissioned ranks within the Imperial Navy include:

  • Warrant Officer [5]
  • Master Chief Petty Officer [4]
  • Chief Petty Officer [4]
  • Senior Chief Petty Officer is a senior NCO rank, denoted by a gold-fringed red rank sash.[7]
  • Sergeant-at-Arms[10c] or Senior Armsman is often in charge of squad of armsmen.[4]
  • Crewboss is often in charge of a shift on convicts.[4]


Navy Crewmen
  • An Armsman is tasked with maintaining security, boarding enemy vessels and repelling boarders.[6]
  • A Trusted Crewman , Voidsman or Shipman (archaic)[10d] is a rank held by the skilled crew of the vessel[4]

Attack Craft Ranks

The ranks of personnel assigned to Attack Craft differ from regular Naval ranks:

  • Wing Commander - The commander of all attack craft on board a carrier ship.[10b]
  • Squadron Commander - The commander of a squadron consisting of attack craft such as a Starhawk Bomber.[6]
  • Wing Captain - The commander of an attack craft such as a Faustus Class Interceptor.[5]
Imperial Navy Ratings

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