Ship damage comes in these categories
Destroyed: The ship has been vaporized. Nothing usable is left, but it might be possible to recover some debris to identify the vessel.
Wrecked: Cannot be repaired, crew may or may not survive. In certain circumstances the hulk may be salvaged and earn 1-10% of the cost of the vessel.
Crippled: Badly damaged, two or three drives destroyed. Stranded, can’t go anywhere on her own. Can be repaired for 50% of the cost of the vessel. This repair takes 8-18 weeks plus time to ship out new drives from a class A Starport of the right tech level.
Disabled: Mission-killed and stranded in this combat but jury-rigged repairs are possible by her own crew given time out of combat. This may return the vessel to combat capability but may still be stranded without a working jump drive. Can be fully repaired for 25% of the cost of the vessel. This repair takes 3-8 weeks at a class A or B Starport of the right tech level.
Major Damage: One or more major systems are disabled but the ship can still fight and is not stranded. Crew may be able to repair somewhat on a temporary basis to return to a fight. Can be fully repaired for 10% of the cost of the vessel. This repair takes 2-4 weeks at a class A, B and sometimes C Starport of the right tech level.
Minor Damage: Damage to ship systems that does not hinder its mission. Only slight damage to fuel tanks, weapons, appearance. Can be fully repaired for 1% of the cost of the vessel. This repair takes one full week at a class A, B or C starport but can be repaired at a lower tech level than the design.