The minimum size for spacecraft components is 2x2x2 studs.

• 1.1. In addition, ships must only have one gyroscope component.

Competing spacecraft have a functional acceleration limit of 333.33st/s² across all axes.

• 2.1. Functional acceleration is defined as the acceleration of a craft when a movement key is pressed. This differs from the value shown in the Editor's 'Connected Stats' table.

Competing spacecraft must fit within a bounding box set to 15x8x28 studs.

• 3.1. Spacecraft must be checked at an orientation where the control seat's orientation matches the bounding box's orientation.

Competing spacecraft must be outfitted with an interior element.

• 4.1. How the interior is realized is up to the builder and their goals for the spacecraft's aesthetics, however there must be discernible elements that make the interior appear to be a space used to control the ship.

• 4.2. Spacecraft must remain reasonably operable in FPV mode, even if the pilot does not use it.

Each spacecraft must conspicuously exhibit the official HS500 Class decal.

• 5.1.  The class decal requirement necessitates clear and unobstructed visual identification from a distance (the decal must be legible when looking at the spacecraft as a whole).

Genuine effort must be put into the creation and visuals of any competing spacecraft's hull.

• 6.1.  Having the majority of your components exposed and arranged in a "component brick" or "testbed" configuration is forbidden. Sessions submitted using these types of spacecraft are automatically disqualified upon review.