Ship Types
Fast Attack - Ships build more for speed than fighting, but should be able to give a ship a "bloody nose" before being destroyed.
Medium Attack - Balance between speed and firepower, designed not to be destroyed in battle (may be disabled) but should destroy the enemy.
Heavy Attack - Designed not for speed but for punch, Should be able to destroy a ship of its own size and not be halted to a stop.
Carrier's___
Speed - Designed with speed, all the bays it can hold and minumun defence.
Heavy - Slowns down a little, but is replaced with defence and weapons.
Transports___
Light - Designed for speed and not to fight
Heavy - Designed for some defence, speed is sacraficed.