First put into service in YE 29, Universal Mass Driver Canisters are NAM's standard payload for electromotive weaponry. There are four size grades of UMD canisters available: Armor grade, Vehicle grade, Starship grade, and Capital grade.. This article lists the specifics of each grade, as well as linking to systems that utilize them. UMD canisters are differentiated by color, with the color scheme standardized among the sizes: RED is always some type of high explosive; WHITE is always an armor piercing round; BLACK is a stealth/sniper round; BLUE is intended for EMP and Anti-shield purposes; GREEN is always an antimatter charge; and YELLOW is a harmless subspace pinger.

In YE 42, Aera Maren used one of these shells for a boodytrap during the Kuvexian War¹⁾.

Armor grade UMD canisters are roughly the same size and shape as a soda can, and are the common munition of Nepleslian anti-material weapons.

• Length: 5“²⁾
• Caliber: 2.17”³⁾
• Effective Range: 3,000 meters in atmosphere, 5,000 meters in space.
• Muzzle Velocity: 2,000 meters per second in atmosphere, 5,000 meters per second in space.
• Muzzle Blast: Small static discharge as the hypersonic canister leaves the barrel; delayed sonic boom in atmosphere.
• Recoil: Very Heavy
• Energy Source: Electromagnetically propelled canisters of varying types

• AIR 2 FMD-01a
• AIR UMD-01a
• NIGHT UMD-01anc
• VOID Commando UMD-02a
• Night 2 UMD-01anc
• BULLDOG RFMD-02b
• Storm FMD-03R

Vehicle grade UMD munitions are intended for use with armored and unarmored vehicles, starships, and as light armaments for starships.

• Length: 8“⁴⁾
• Caliber: 4.1” ⁵⁾
• Effective Range: 4,000 meters in atmosphere, 100km in space.
• Muzzle Velocity: 2,000 meters per second in atmosphere, 5,000 meters per second in space.
• Muzzle Blast: Small static discharge as the hypersonic canister leaves the barrel; delayed sonic boom in atmosphere.
• Recoil: Minor but negligible for a firing vehicle.
• Energy Source: Electromagnetically propelled canisters of varying types

Starship grade munitions are effectively 8 inch shells, and are the standard kinetic munition used by Nepleslian warships.

• Length: 14“⁶⁾
• Caliber: 8” ⁷⁾
• Effective Range: 30,000 meters in atmosphere, 300 kilometers in space.
• Muzzle Velocity: 2,000 meters per second in atmosphere, 5,000 meters per second in space.
• Muzzle Blast: Small static discharge as the hypersonic canister leaves the barrel; delayed sonic boom in atmosphere.
• Recoil: Minor but negligible to a starship in combat
• Energy Source: Electromagnetically propelled canisters of varying types

Capital Grade UMD rounds are intended to equip only the largest of Nepleslian capital warships. The canisters are large- too large to be possibly handled by a Nepleslian, and intended generally for ship to ship combat and orbital fire support.

• Length: 34“⁸⁾
• Caliber: 16” ⁹⁾
• Effective Range: 30,000 meters in atmosphere, 1 AU in space.
• Muzzle Velocity: 3,000 meters per second in atmosphere, 6,000 meters per second in space.
• Muzzle Blast: Varies depending on weapon. Normal railguns firing Capital Grade UMD rounds will produce a sharp flash. Virtual Barrel railguns produce a spurt of white brilliant plasma that dissipates from the force of the traveling round.
• Recoil: Heavy. Don't put this on anything smaller than a Battleship.
• Energy Source: Electromagnetically propelled canisters of varying types

• Na-S/S-04a Rook Automated Defense Platform

This page recieved an update on 9/30/2019 that was approved by Syaoran