The Earth-Mars Coalition Navy (EMCN), is the joint naval task force of Earth (the United Nations Navy) and Mars (the Martian Congressional Republic Navy).
History
The Coalition Navy policed the Sol system together for almost a century. According to Dimitri Havelock, the EMCN had about a hundred gunships at its disposal at the time that Eros incident took place.[1]
Eros Incident
 “Welcome to the future” — Spoilers for Leviathan Wakes follow.
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Earth and Mars have been in a state of war, sometimes hot, sometimes cold; as such, EMCN forces are now divided into the UN Navy and the MCRN. The exception to this division is any action involving the Belt or Outer Planets - the Inner Planets cannot afford to look weak to the Outer Planets Alliance.[2]
Ganymede Incident
| “We are not alone” — Spoilers for Caliban's War follow.
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In the eighteen months following the events of the Eros incident the EMCN had effectively disbanded, with its two members entering into the UN-MCR War.[3]
Some time after the Free Navy Conflict, the UN and the MCR governments re-established the Earth-Mars Coalition.
Laconia-Sol Conflict
| “An old enemy returns” — Spoilers for Persepolis Rising follow.
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When the Heart of the Tempest moved towards the inner planets the 2nd Fleet engaged the battleship. After taking heavy losses the surviving ships made high-g burns to escape the battle area. Vital data was gained of the Laconian ships weapons and defenses during this engagement that would be studied and put to use in the next battle.
The main EMCN fleet consisting of every ship that could be armed awaited the Heart of the Tempest at Point Leuctra. The entire fleet engaged the Laconian battleship along with their Transport Union allies. After heavy losses the Governor Knight fired high-yield nuclear missiles against the enemy ship. After detonation it was assumed the Tempest would have been destroyed, yet the battleship survived and was still firing missiles. Multiple surviving ships burned at suicide runs in attempts to ram the Tempest. All the admirals in the fleet were killed and the surviving ships surrendered effectively ending the Earth-Mars Coalition as the Laconian Empire took over control of the Sol system.[4]
Under Laconian rule
 “The enemy is here” — Spoilers for Tiamat's Wrath follow.
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Under Laconian rule the Earth-Mars coalition navy was still kept in use as a policing force in the Sol system. Despite the technological superiority of the Laconian Imperial Navy it lacked the ship numbers so the EMC found a purpose.
The EMCN was by this time firmly under control of the Laconian Empire and its fleets commanded by Laconian flag officers whom reported directly to Admiral Trejo onboard the Heart of the Tempest[5].Fleets
| Designation | Appears | Notes |
|---|---|---|
| 1st fleet | Persepolis Rising (Books) | First EMC fleet to engage Heart of the Tempest |
| 2nd fleet | Persepolis Rising (Books) | Gathered near Jupiter before Battle of Point Leuctra. |
| Ring gate fleet | Season 4 (TV) | Guarded the Sol gate after the Slow Zone Incident |
| Joint fleet | Season 6 (TV) | Fleet that launched the Ceres Offensive |
Known ships
| Designation | Class | Ship type | Appears | Notes |
|---|---|---|---|---|
| EMC Frederick Lewis | Unknown-class | Battleship | Persepolis Rising (Books) | Crippled by Heart of the Tempest |
| EMC Governor Knight | Unknown-class | Unknown | Persepolis Rising (Books) | Launched high-yield nuclear torpedoes at Heart of the Tempest |
| EMC Arcadia Rose | Unknown-class | Unknown | Persepolis Rising (Books) | |
| EMC Talwar | Unknown-class | Unknown | Persepolis Rising (Books) | |
| EMC Severin | Unknown-class | Unknown | Persepolis Rising (Books) | |
| EMC Ontario | Unknown-class | Unknown | Persepolis Rising (Books) | Destroyed by Heart of the Tempest |
| EMC Odachi | Unknown-class | Unknown | Persepolis Rising (Books) | |
| EMC Michael Souther | Unknown-class | Unknown | Persepolis Rising (Books) |
References
- ↑ The Expanse Novel Leviathan Wakes - Chapter 8: Miller
- ↑ The Expanse Novel Leviathan Wakes
- ↑ The Expanse Novel Caliban's War
- ↑ The Expanse Novel Persepolis Rising
- ↑ The Expanse Novel Tiamat's Wrath - Chapter 12: Bobbie