The Martian Congressional Republic Navy (MCRN) is the naval force of the Martian Congressional Republic, and the most important branch of its military.

It's smaller in size than the United Nations Navy, but more technologically advanced.

MCRN logo-onwhite-640x480

Shipyards Edit

Shipyards Appears Notes
MCRN Callisto shipyards TV and Books Destroyed by Free Navy asteroid strike.

Fleets Edit

The Martian Congressional Republic Navy is divided into three main fleets. Additional fleets operate as a part of the main ones:

Fleets Appears Notes
MCRN Home fleet TV and Books Stationed at Mars.
MCRN Saturn fleet TV
MCRN Jupiter fleet TV and Books Stationed at Jupiter and its moons including Ganymede.
MCRN 3rd fleet TV Lost four battle groups during combat in the UN-MCR War.

Known ships/Platforms Edit

Designation Class Ship type Appears Notes
X5 MCRN Stealth C Ballistic Missile Platform First Strike Nuclear Missile Platform Mobile Missile Platform TV Whilst tracking Earth all 5 were destroyed by the United Nations.
MCRN Donnager Donnager-class Battleship Books and TV Scuttled after stealth ships damaged it and it was boarded while investigating Scopuli distress call and Canterbury destruction.
MCRN Harman Dae-Jung Books and TV Assigned to MCRN Home fleet
MCRN Icaria Planum TV Became flagship after Donnager'ss destruction.
MCRN Bellaire Books and TV
MCRN Barkeith Books and TV Stolen from the MCRN by Admiral Duarte's Laconian faction before being destroyed by a Ring Gate anomaly.
MCRN Schiaparelli TV Current Flagship of MCRN Jupiter fleet after UN-MCR War
MCRN Hotspur TV Assaigned to MCRN Jupiter fleet, Ganymede border Patrol
MCRN Firebrand TV Assigned to MCRN Jupiter fleet, Callisto shipyard defence
MCRN Cydonia Raptor-class Fast-attack cruiser Books
MCRN Valkyrie Scirocco-class Assault cruiser TV Launched a torpedo at the Weeping Somnambulist.[1]
MCRN Scirocco TV Destroyed Phoebe Station to prevent earth reaching it. Later damaged during the Ganymede Incident.
MCRN Xuesen TV Sent to the Ring. Bobbie Draper is on board.
MCRN Hammurabi Unknown class(Books)/
Scirocco-class (TV)
Assault cruiser(TV)
TV and Books Part of the MCRN Jupiter Fleet headed by Capt. Sandrine Kirino. Witnesses infighting of the UNN Jupiter Fleet after attempted mutiny aboard the UNN Agatha King.
MCRN Morrigan Morrigan-class Patrol destroyer TV Stationed at Titan
MCRN Scipio Africanus TV and Books High profile incident in media involving rock-throwing attack, in "Rock Bottom".[Citation needed] TV version probably survived. Book version not attacked.
MCRN Kittur Chennamma TV During the UN-MCR War, the ship was hit by railgun rounds completely destroying its command deck and taking out its water and life support systems. Would later be found by the Rocinante which salvaged its munitions.
MCRN Shandian TV Modified for Stealth. Shadowed the UNS Arboghast over Venus until disappearance whilst entering the atmosphere.
MCRN Damascus TV and Books Part of Operation Silent Wall.
MCRN Iceni TV and Books
MCRN Avalanche TV and Books
MCRN Hamill-Stewart TV and Books
MCRN Ambedkar TV Attempted to Board the Rocinante until receiving MCRN Black Ops code.
MCRN Sally Ride Unknown class Destroyer Books
MCRN Iani Chaos Unknown class Destroyer Books Present during Io Campaign.
MCRN Lucian Unknown class Frigate Books
MCRN Cavalier Unknown class Frigate Books
MCRN Tachi /
Corvette-class Fast-attack frigate[2] TV and Books Believed to be destroyed, but actually came under the control of the Canterbury crew survivors and recommissioned as Rocinante by the crew themselves.
MCRN McCabe TV and Books Part of Operation Silent Wall
MCRN Valenza TV and Books
MCRN Karakum TV Black Ops ship destroyed by United Nations Navy over Ganymede.[3]
Pella Books Stolen from the MCRN for the Free Navy. Later destroyed by Ring-Gate anomaly.
Connaught Books Stolen from MCRN for the Free Navy. Later when crew defected the ship fought alongside the Consolidated Fleet against the Free Navy. Eventually heavily damaged in battle.
MCRN Tsuchi Corvette-class (Presumed) Fast-attack frigate Books Decommissioned after Io Campaign yet reappeared a year later near Europa.
Shinakuto Books Stolen from the MCRN for the Free Navy.
Andreas Hofer Books
Koto Books
Solano Books
Panshin Books
Serrio Mal Books
Witch of Endor Books
Ando Books
Dagny Taggart Books
MCRN Bandon Unknown class Unknown ship type Books Alex Kamal served on the Bandon when he was with the MCRN.
MCRN Africanus Unknown class Unknown ship type TV Stationed at Callisto.
MCRN Askia Unknown class Unknown ship type TV C.O. Captain Lucas was onboard Xuesen during the Slow Zone Incident.
MCRN Yangtse Unknown class Unknown ship type TV Launched Ambedkar to Board the Rocinante for inspection.
MCRN Carson Lei Unknown class Unknown ship type Books Destroyed by Free Navy during the raid on Callisto shipyards.
MCRN R R Martin Unknown class Unknown ship type TV Present at Io Campaign.
MCRN Apalala Unknown-class Supply ship Books Stolen from the MCRN before Free Navy Conflict.

Ship-classes in serviceEdit

Class Ship type Appearances Photo Notes
Donnager-class Battleship TV and Books Donnager Render 1 The largest and most powerful ship-class in the MCRN fleet
Scirocco-class Assault cruiser TV Sciroccoclassconceptart Used to deploy Force Recon Marines via externally docked Chariot-type dropships.
Raptor-class Fast-attack-cruiser Books Considered Top-of-the-line during the UN-MCR War
Frigate-class Frigate TV and Books Four docked onboard MCRN Harman Dae-Jung after the Ganymede Incident.
Corvette-class Fast-attack frigate TV and Books Mcrncorvetteclassconceptart
Morrigan-class Patrol destroyer TV Morriganclassdestroyer1 Heavily used in policing operations


Eros IncidentEdit

When the Canterbury was destroyed, and James Holden released his broadcast incriminating Mars in its destruction, MCRN Donnager picked up Holden and his crew of Knight. During Holden's debrief, the Donnager is attacked by six unidentified ships and eventually destroyed. Holden and his crew escaped on the MCRN Corvette-class ship Tachi and later claim it as salvage.

When the Donnager is destroyed by what is believed to be OPA ships, Mars declares war on the Belt. Later, when Holden releases information that the ships that destroyed the Donnager were actually made on Earth, United Nations Navy ships fire on MCRN ships in Mars orbit, also destroying the Deimos deep radar station. The MCRN then ordered their ships in the system to return to Mars and declared war on Earth.

After the protomolecule was unleashed on Eros during the Eros incident, and its existence became known to the public, the Martian fleet nuked Phoebe into a thin gas that was sucked into Saturn’s gravity.

Ganymede IncidentEdit

In the eighteen months since the Eros incident, the MCR and UN have been in a bitter cold war.

The Ganymede incident was an event in which a human-protomolecule hybrid attacked Martian and UN Marines on Ganymede, killing everyone except Gunnery Sergeant Roberta Draper. The initial attack was misinterpreted by both the MCR and the UN as an attack from the other side, which led to a battle above and on Ganymede that claimed nearly three thousand military and civilian lives, as well as causing over five billion MCR dollars of infrastructural damage.

Rebuilt fleetEdit

By the time of the Conflict on Ilus IV, the MCRN had recovered significantly from its fighting with the UN in the war. The navy had sixteen battlecruisers and fifteen thousand nuclear warheads, alongside "high energy proton cannons".[4]

Defections and theftEdit

Knowing that the MCR was facing an economic crisis due to mass emigration to new systems MCRN Admiral Winston Duarte organized to form a new government in the Laconia system using radical Belters as cover to escape the system with a third of the entire MCRN fleet. This was done by stealing officially decommissioned ships including many Corvette-class ships and giving them to the Free Navy to start a war.

Unknown to the Majority of the MCRN and the Martian Congressional Republic government when the [Free Navy Conflict]] began Free Navy ships were able to approach the ship carrying the Prime Minister Nathan Smith posing as reinforcements. These ships then attacked the fleet at close range catching the MCRN off guard and forcing them to send the Prime Minister off onboard the fastest ship available the Razorback.

Confusion and warEdit

With an entire third of the MCRN fleet gone rogue and heading towards the Laconia system with no known reason the MCR was in crisis that caused the Prime Minister to be deposed. During this time the remaining MCRN fleet was largely kept back and was unable to purse offensive operations until all personels loyalty could be confirmed.

Despite this at least one MCRN ship carrying Martian Marines was able to join the Ceres Offensive led by the United Nations Navy and arrived as one of the first two ships (the other carrying UN Marines) to easily retake Ceres.

The remaining MCRN forces once reorganised and secured were able to join the Consolidated Fleet Offensive including most of the reserves protecting Mars.

Post WarEdit

After the Free Navy Conflict the MCRN joined the United Nations Navy as a part of the Earth-Mars Coalition Navy operating more as a single entity.


References Edit

  1. TV Season 2, Episode 12
  2. Stated to be a frigate several times in dialogue in season 1, and written on the ship's computer. Called Fast-attack frigate by James Holden in novels on several occasions
  3. TV Season 2, Episode 12
  4. Cibola Burn - Page 579