Star Trek Impulse Thrusters

Impulse Thrusters

Ships of 300 meters and smaller can also install impulse thrusters, a special type of thruster which improves a ship's speed and maneuverability. They add +.01c (+1 Base Space Speed) to the ship's impulse speed (maximum of .95c) and provide +1D maneuverability. A ship may only benefit from one (1) Impulse Thruster system. Multiple Impluse Thrusters installed on the same ship do not provide multiple bonuses.

Source

• Stardock Starship and Construction Manual (page 40)
• thedemonapostle