United Republics of Mars Navy

The United Republics of Mars Navy (URMN) is the United Republics of Mars's space naval force.

The URMN maintains a fleet of the most technologically sophisticated ships and including two super carriers, two atmospheric-capable carriers, fourteen ballistic missile destroyers (which maintain the URM nuclear deterrent), six cruisers, 6 guided missile support platforms, 33 frigates, 13 mine-countermeasure vessels and 659 gunships. As of November 2018, there are 721 commissioned ships (including gunships) in the URM Navy, plus 11 ships of the Support Fleet (URMSF). The URMSF replenishes URMN warships on deployment, and augments the Martian Marine Corps amphibious warfare capabilities through its two atmospheric-capable carriers.

The URMN is part of the URM Naval Forces, which also includes the Martian Marine Corps. The URM Navy operates six bases on Mars where commissioned ships are based; Olympus, Zeus Station and Deimos, the last being the largest operational naval base outside of the Near Earth Area.

Fleet
The URM Navy is primarily geared towards space-to-surface combat, providing fire support and resupply. This is seen in the largest capacity carrier fleet in the Solar System as well as the only atmospheric-capable carriers. Despite the lack of space superiority, other fleets were technologically behind the URM Navy by up to 30 years. As a result, during the Martian-Terran War, more advanced weapons systems aboard the cruisers and frigates were able to destroy the much larger UNEN ships, weaknesses in this design doctrine would be visible when at the Battle of 733-30-962 as the modern UNEN ships inflicted the first defeat on the URMN.

The large fleet units in the URM Navy consisted of amphibious warfare ships and aircraft carriers, until August 2354, when the last Galileo-class carrier was decommissioned. Amphibious warfare ships in current service include six landing support platforms. While their primary role is to conduct amphibious warfare, they have also been deployed for humanitarian aid missions.