Master of the Fleet

The Master of the Fleet is the Space Marine captain within a Chapter compliant with the Codex Astartes who commands all of the Chapter's space assets and is deemed to have the most experience and greatest skill at planning and executing void-combats.

A Chapter Master designates one of his captains to command the Chapter fleet, who essentially serves as the Chapter's fleet admiral, commanding its flagship and all other space assets when they deploy for major engagements.

In rare cases, a Chapter's Master of the Fleet may not be an Astartes officer but a mortal with a long history of space combat and commanding fleet engagements, such as a former or current flag officer of the Imperial Navy who has been seconded to the Chapter under ancient inter-service agreements. In Codex-compliant Chapters this office is typically held by the captains of the 4th Company.

Notable Masters of the Fleet[]

Captain Bellorphon (Blood Angels)

Captain Idaeus (Ultramarines)

Captain Dac'tyr (Salamanders)

Captain Waite Ryder (Exorcists)

Sources[]

Codex: Space Marines (5th Edition) pp. 17, 54
Warhammer 40,000: Apocalypse (6th Edition), pg. 177
Defenders of Ultramar #1 (Comic)
Imperial Armour Volume Ten - The Badab War - Part Two, pp. 36, 39
Games Workshop Online Catalogue - Space Marine Masters of the Chapter

Space Marine Forces
Chapter Command	Chapter Master • Master of the Keep • Master of Sanctity • Chief Librarian • Master of the Apothecarion • Master of the Forge • Master of the Watch • Master of the Fleet • Master of the Arsenal • Master of the Marches • Master of the Rites • Master of Relics • Chief Victualler • Lord Executioner • Master of Recruits • Master of Reconnaissance • Master of the Signal • Chapter Ancient • Primaris Ancient • Chapter Champion • Honour Guard
Company Command	Command Squad • Reclusiam Command Squad • Captain • Primaris Captain • Lieutenant • Primaris Lieutenant • Company Ancient • Company Champion
Specialists	Librarian (Epistolary • Codicier • Lexicanium • Primaris Librarian • Vanguard Librarian) • Chaplain (Reclusiarch • Primaris Chaplain • Judiciar) • Apothecary (Primaris Apothecary • Apothecary Biologis • Helix Adept) • Techmarine
Veteran Squads	Veteran Marines (Sternguard Veteran • Vanguard Veteran • Veteran Intercessor • Veteran Assault Intercessor • Bladeguard Veteran) • Terminator Squad • Terminator Assault Squad
Battleline Squads	Tactical Squad • Intercessor Squad (Heavy Intercessor Squad) • Infiltrator Squad
Close Support Squads	Assault Squad • Assault Intercessor Squad • Jump Pack Intercessor Squad • Inceptor Squad • Reiver Squad • Incursor Squad • Suppressor Squad • Bike Squad • Outrider Squad • Centurion Assault Squad
Fire Support Squads	Aggressor Squad • Desolation Squad • Devastator Squad • Hellblaster Squad • Eradicator Squad • Eliminator Squad • Infernus Squad • Centurion Devastator Squad
Neophyte Squads	Scout Squad • Scout Bike Squad
Light Vehicles	Assault Bike • Attack Bike • Scout Bike • Raider Pattern Combat Bike • Invader ATV • Land Speeder (Land Speeder Storm • Land Speeder Tempest • Land Speeder Tornado • Land Speeder Typhoon • Land Speeder Vengeance • Land Speeder Proteus • Darkshroud) • Storm Speeder (Storm Speeder Hailstrike • Storm Speeder Hammerstrike • Storm Speeder Thunderstrike)
Combat Walkers	Dreadnought (Castraferrum Dreadnought • Siege Dreadnought • Hellfire Dreadnought • Ironclad Dreadnought • Venerable Dreadnought • Mortis Dreadnought • Chaplain Dreadnought • Librarian Dreadnought • Furioso Dreadnought • Death Company Dreadnought • Redemptor Dreadnought (Brutalis Dreadnought • Ballistus Dreadnought) • Wulfen Dreadnought • Doomglaive Dreadnought) • Nemesis Dreadknight • Invictor Tactical Warsuit
Armoured Personnel Carriers	Rhino • Razorback • Damocles Command Rhino • Rhino Primaris • Rhino Advancer • Impulsor
Main Battle Tanks	Predator Destructor (Predator Annihilator • Baal Predator) • Land Raider (Land Raider Phobos • Land Raider Crusader • Land Raider Redeemer • Land Raider Achilles • Land Raider Prometheus • Land Raider Terminus Ultra • Land Raider Ares • Land Raider Excelsior • Land Raider Wrath of Mjalnar • Land Raider Angel Infernus • Land Raider Solemnus Aggressor • Land Raider Anvilarum) • Deimos Vindicator Laser Destroyer • Repulsor • Repulsor Executioner • Gladiator (Gladiator Reaper • Gladiator Valiant • Gladiator Lancer) • Astraeus
Artillery	Whirlwind • Vindicator • Stalker • Hunter • Whirlwind Hyperios • Land Raider Helios • Thunderfire Cannon • Firestrike Servo-turret
Aircraft/Air-Deployed	Stormtalon • Thunderhawk • Thunderhawk Transporter • Shadowhawk • Stormraven • Storm Eagle • Fire Raptor • Stormhawk Interceptor • Caestus Assault Ram • Dark Talon • Nephilim Jetfighter • Stormfang • Stormwolf • Corvus Blackstar • Overlord • Drop Pod • Hammerfall Bunker
Rare, Relic or Retired Units and Vehicles	Gorgon Terminator Squad • Saturnine Terminator Squad • Contemptor Pattern Dreadnought • Deredeo Pattern Dreadnought • Saturnine Pattern Dreadnought • Cerberus Heavy Tank Destroyer • Leviathan Dreadnought • Javelin Attack Speeder • Jetbike • Deimos Predator • Deimos Rhino • Sabre Tank Hunter • Land Raider Proteus • Kratos Heavy Assault Tank • Mark IIb Land Raider Phobos • Malcador Assault Tank (Malcador Annihilator) • Sicaran Battle Tank • Sicaran Venator • Sicaran Punisher Assault Tank • Sicaran Arcus Strike Tank • Sicaran Omega Tank Destroyer • Spartan Assault Tank • Typhon Heavy Siege Tank • Fellblade • Falchion • Mastodon • Deimos Whirlwind Scorpius • Xiphon Pattern Interceptor • Stormbird • Kharybdis Assault Claw