Agility

Agility is an upgradable statistic that differs for each ship. The agility affects the rate at which a ship can accelerate to max speed and the rate at which the ship can turn or change directions.

FuryStar: Highest acceleration and turning speed

Bastion: Lowest turning speed

Shadow X-3: Lowest acceleration (not correct, unupgraded Pioneer and maxed Y-Defender accelerate slower)

This is located at #8 of the upgrade GUI and can be upgraded by pressing 8.