Ship Additions (Earth Human)

Ship additions are anything that you put in an empy, armourless ship that isn't a weapon. They are:

Reactors, Armour, Drives, and Mainframes.

Reactors:
Earth's ships are powered by fusion reactors (a technology that actually works by 2650). The lowest amount of power needed for a starship is a gigawatt; and so that's the lowest energy level of reactor. Reactors can range anywhere from the single gigawatt to a planned reactor that would produce an entire terawatt of power; so there's no way to put them all in a list.

Armour:
Earth's scientists have come up with many alloys and armours over the years; and, in order of age, they are:

Steel: Fairly self-explanatory. Steel plating on the exposed hull of a ship. Enough will block explosives and kinetic energy, but not heat-based weapons.

Titanium: Another metal to make plating out of. It can block the same explosives as steel with less metal, and is more heat-resistant than steel; but is ,ore vulnerable to kintic weapons.

Vanadium-Steel Alloy: The alloy that pretty much dominated the first few cneturies of Earth-based spaceflight. It's heavy, but it's fairly heat-resistant and it's good for both blocking explosives and kinetic attacks.

Vanadium-titanium Alloy: A better version of the above that does the same with less metal. This is the current pi nnacle of Earth-based armour engineering.

Composite Alloy: A slightly shiny and great at heat conducting alloy made to absorb heat, and dissapate it to heatsinks scattered on the outside of the ship. Is great for blocking a laser or plasma, but not much else. It's commonly layered with other types of armour, for good measure.

Drives:
Earth's ships' reactors produce waste atoms, which are then expelled out the end of the ship, resulting in the ship moving forwards.

Ion drive: The most basic form of the above principle.

Phase drive: A more advanced version that draws ions from other parts of the ship as well, resulting in moar speed.

Chemical Rockets: The oldest way of propelling a spaceship. Now only used by fighter/bombers, dropships and escape pods.

Mainframes:
Most large Earth ships have mainframes, which process data, run calculations for shen to fire artillery barrages, ect.

Mainframe: Handles the day-day functions of the ship, as well as any quick calculus equations that need solving when timing artillery.

MEGA-variant Mainframe: A beefed-up mainframe capable of supporting a small AI (small meaning that it dowsn't know much, keeping the file size down).

GIGA-variant mainframe: An even more beefed-up version capable of supporting a full AI (one that doesn't have a hard limit on how much data it can gather).