Athmospheric Configuration: This fitting must be put in place when the ship is built, and cannot be installed on cruiser-class or larger ships. A ship designed for atmospheric flight can land on most solid or aqueous surfaces, provided the material is capable of bearing its weight.
Fuel Bunkers: Most ships require refueling after each drill jump, no matter the distance. Installing fuel bunkers allows the ship to carry one additional load of fuel.
Spike Drive 1: The spike drive uses an integrated fusion power plant to bubble a ship upward through ever-increasing dimensional frequencies. By riding the energy created by the shear of dimensional interfaces, the ship can be propelled at faster-than-light velocities through universes that fail to respect the ordinary laws of physics.
Cargo Space: Free mass can be traded for pressurized cargo space. One point of free mass grants 2 tons of cargo space in a fighter, 20 tons in a frigate, 200 tons in a cruiser, and 2000 tons in a capital-class ship.